llvm / llvm/llvm-project

segmentation fault with clang-22 (-O3 -Wno-return-type -Wno-implicit-int)

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confirmed crash llvm:SCEV
Dominant language
LLVM
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Description

**Environment**
- Clang-Version: LLVM version 22.1.1
- Commit Hash: git [e693f0fe6390d491a7c9195c2a77d52581bd3f24](https://github.com/llvm/llvm-project/commit/e693f0fe6390d491a7c9195c2a77d52581bd3f24)
- Platform: Linux 5.15.0-168-generic

when compiling the following code with this flag combination:
```C
// clang-22 -O3 -Wno-return-type -Wno-implicit-int input.c

a() {
int b = 0, c = 0;
for (;; a) {
c++;
if (c <= 14)
continue;
b++;
if (b <= 45)
continue;
return;
}
}

```

Below is the stack trace we get

```sh
user42@node0:~$ clang-build/llvm-22-build/bin/clang-22 -O3 -Wno-return-type -Wno-implicit-int crash.c
crash.c:3:11: warning: expression result unused [-Wunused-value]
3 | for (;; a) {
| ^
PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace, preprocessed source, and associated run script.
Stack dump:
0. Program arguments: /users/user42/clang-build/llvm-22-build/bin/clang-22 -cc1 -triple x86_64-unknown-linux-gnu -O3 -emit-obj -dumpdir a- -disable-free -clear-ast-before-backend -disable-llvm-verifier -discard-value-names -main-file-name crash.c -mrelocation-model pic -pic-level 2 -pic-is-pie -mframe-pointer=none -fmath-errno -ffp-contract=on -fno-rounding-math -mconstructor-aliases -funwind-tables=2 -target-cpu x86-64 -tune-cpu generic -debugger-tuning=gdb -fdebug-compilation-dir=/users/user42 -fcoverage-compilation-dir=/users/user42 -resource-dir /users/user42/clang-build/llvm-22-build/lib/clang/22 -internal-isystem /users/user42/clang-build/llvm-22-build/lib/clang/22/include -internal-isystem /usr/local/include -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/11/../../../../x86_64-linux-gnu/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -Wno-return-type -Wno-implicit-int -ferror-limit 19 -fmessage-length=275 -fgnuc-version=4.2.1 -fskip-odr-check-in-gmf -fcolor-diagnostics -vectorize-loops -vectorize-slp -faddrsig -fdwarf2-cfi-asm -o /tmp/crash-2ed190.o -x c crash.c
1. parser at end of file
2. Code generation
3. Running pass 'Function Pass Manager' on module 'crash.c'.
4. Running pass 'Loop Pass Manager' on function '@a'
5. Running pass 'Loop Strength Reduction' on basic block '%263'
#0 0x000056225998de50 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x2060e50)
#1 0x000056225998b04d SignalHandler(int, siginfo_t*, void*) Signals.cpp:0:0
#2 0x00007f27e1ed6520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
#3 0x0000562258b0172e llvm::ScalarEvolution::findExistingSCEVInCache(llvm::SCEVTypes, llvm::ArrayRef) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x11d472e)
#4 0x0000562258b3e543 llvm::ScalarEvolution::getAddExpr(llvm::SmallVectorImpl&, llvm::SCEV::NoWrapFlags, unsigned int) (.part.0) ScalarEvolution.cpp:0:0
#5 0x0000562258b40e1c llvm::ScalarEvolution::getAddExpr(llvm::SCEV const*, llvm::SCEV const*, llvm::SCEV::NoWrapFlags, unsigned int) (.constprop.0) ScalarEvolution.cpp:0:0
#6 0x0000562258b40342 llvm::ScalarEvolution::getAddExpr(llvm::SmallVectorImpl&, llvm::SCEV::NoWrapFlags, unsigned int) (.part.0) ScalarEvolution.cpp:0:0
#7 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#8 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#9 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#10 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#11 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#12 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#13 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#14 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#15 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#16 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#17 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#18 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#19 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#20 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#21 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#22 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#23 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#24 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#25 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#26 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#27 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#28 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#29 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#30 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#31 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#32 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#33 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#34 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#35 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#36 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#37 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#38 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#39 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#40 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#41 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#42 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#43 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#44 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#45 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#46 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#47 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#48 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#49 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#50 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#51 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#52 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#53 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#54 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#55 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#56 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#57 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#58 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#59 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#60 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#61 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#62 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#63 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#64 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#65 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#66 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#67 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#68 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#69 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#70 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#71 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#72 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#73 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#74 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#75 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#76 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#77 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#78 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#79 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#80 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#81 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#82 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#83 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#84 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#85 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#86 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#87 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#88 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#89 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#90 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#91 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#92 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#93 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#94 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#95 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#96 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#97 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#98 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#99 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#100 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#101 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#102 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#103 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#104 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#105 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#106 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#107 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#108 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#109 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#110 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#111 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#112 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#113 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#114 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#115 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#116 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#117 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#118 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#119 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#120 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#121 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#122 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#123 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#124 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#125 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#126 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#127 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#128 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#129 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#130 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#131 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#132 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#133 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#134 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#135 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#136 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#137 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#138 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#139 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#140 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#141 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#142 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#143 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#144 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#145 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#146 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#147 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#148 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#149 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#150 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#151 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#152 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#153 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#154 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#155 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#156 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#157 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#158 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#159 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#160 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#161 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#162 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#163 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#164 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#165 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#166 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#167 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#168 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#169 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#170 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#171 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#172 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#173 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#174 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#175 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#176 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#177 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#178 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#179 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#180 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#181 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#182 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#183 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#184 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#185 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#186 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#187 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#188 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#189 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#190 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#191 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#192 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#193 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#194 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#195 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#196 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#197 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#198 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#199 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#200 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#201 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#202 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#203 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#204 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#205 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#206 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#207 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#208 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#209 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#210 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#211 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#212 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#213 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#214 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#215 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#216 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#217 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#218 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#219 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#220 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#221 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#222 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#223 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#224 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#225 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#226 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#227 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#228 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#229 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#230 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#231 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#232 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#233 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#234 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#235 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#236 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#237 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#238 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#239 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#240 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#241 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#242 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#243 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#244 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#245 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#246 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#247 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#248 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#249 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#250 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#251 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#252 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#253 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
#254 0x0000562258b37a67 llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x120aa67)
#255 0x0000562258b36bd8 llvm::ScalarEvolution::getZeroExtendExprImpl(llvm::SCEV const*, llvm::Type*, unsigned int) (/users/user42/clang-build/llvm-22-build/bin/clang-22+0x1209bd8)
clang-22: error: unable to execute command: Segmentation fault
clang-22: error: clang frontend command failed due to signal (use -v to see invocation)
clang version 22.1.1 (https://github.com/llvm/llvm-project.git e693f0fe6390d491a7c9195c2a77d52581bd3f24)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /users/user42/clang-build/llvm-22-build/bin
clang-22: note: diagnostic msg:
********************

PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
Preprocessed source(s) and associated run script(s) are located at:
clang-22: note: diagnostic msg: /tmp/crash-255585.c
clang-22: note: diagnostic msg: /tmp/crash-255585.sh
clang-22: note: diagnostic msg:

********************
```

Below are the crash files:
```sh
> cat /tmp/crash-255585.c

# 1 ""
# 1 "crash.c"
a() {
int b = 0, c = 0;
for (;; a) {
c++;
if (c <= 14)
continue;
b++;
if (b <= 45)
continue;
return;
}
}
```

```sh
> cat /tmp/crash-255585.sh

# Crash reproducer for clang version 22.1.1 (https://github.com/llvm/llvm-project.git e693f0fe6390d491a7c9195c2a77d52581bd3f24)
# Driver args: "-O3" "-Wno-return-type" "-Wno-implicit-int" "crash.c"
# Original command: "/users/user42/clang-build/llvm-22-build/bin/clang-22" "-cc1" "-triple" "x86_64-unknown-linux-gnu" "-O3" "-emit-obj" "-dumpdir" "a-" "-disable-free" "-clear-ast-before-backend" "-disable-llvm-verifier" "-discard-value-names" "-main-file-name" "crash.c" "-mrelocation-model" "pic" "-pic-level" "2" "-pic-is-pie" "-mframe-pointer=none" "-fmath-errno" "-ffp-contract=on" "-fno-rounding-math" "-mconstructor-aliases" "-funwind-tables=2" "-target-cpu" "x86-64" "-tune-cpu" "generic" "-debugger-tuning=gdb" "-fdebug-compilation-dir=/users/user42" "-fcoverage-compilation-dir=/users/user42" "-resource-dir" "/users/user42/clang-build/llvm-22-build/lib/clang/22" "-internal-isystem" "/users/user42/clang-build/llvm-22-build/lib/clang/22/include" "-internal-isystem" "/usr/local/include" "-internal-isystem" "/usr/lib/gcc/x86_64-linux-gnu/11/../../../../x86_64-linux-gnu/include" "-internal-externc-isystem" "/usr/include/x86_64-linux-gnu" "-internal-externc-isystem" "/include" "-internal-externc-isystem" "/usr/include" "-Wno-return-type" "-Wno-implicit-int" "-ferror-limit" "19" "-fmessage-length=275" "-fgnuc-version=4.2.1" "-fskip-odr-check-in-gmf" "-fcolor-diagnostics" "-vectorize-loops" "-vectorize-slp" "-faddrsig" "-fdwarf2-cfi-asm" "-o" "/tmp/crash-2ed190.o" "-x" "c" "crash.c"
"/users/user42/clang-build/llvm-22-build/bin/clang-22" "-cc1" "-triple" "x86_64-unknown-linux-gnu" "-O3" "-emit-obj" "-dumpdir" "a-" "-disable-free" "-clear-ast-before-backend" "-disable-llvm-verifier" "-discard-value-names" "-main-file-name" "crash.c" "-mrelocation-model" "pic" "-pic-level" "2" "-pic-is-pie" "-mframe-pointer=none" "-fmath-errno" "-ffp-contract=on" "-fno-rounding-math" "-mconstructor-aliases" "-funwind-tables=2" "-target-cpu" "x86-64" "-tune-cpu" "generic" "-debugger-tuning=gdb" "-fdebug-compilation-dir=/users/user42" "-fcoverage-compilation-dir=/users/user42" "-Wno-return-type" "-Wno-implicit-int" "-ferror-limit" "19" "-fmessage-length=275" "-fgnuc-version=4.2.1" "-fskip-odr-check-in-gmf" "-fcolor-diagnostics" "-vectorize-loops" "-vectorize-slp" "-faddrsig" "-fdwarf2-cfi-asm" "-x" "c" "crash-255585.c"
```
This segfault persists across versions 22 and 23 (23.0.0git [63db92d6d25bab26f28d8d263c70f47f06a380da](https://github.com/llvm/llvm-project/commit/63db92d6d25bab26f28d8d263c70f47f06a380da)).
But not present on 20.
llvm::ScalarEvolution appears to be faulty, causing segmentation fault

Contributor guide

Open the contributing guide

Research direction

Reproduce the crash with the provided input.c command and LLVM 22.1.1 environment. Start at the reported Loop Strength Reduction pass and the ScalarEvolution stack frames, especially the repeated getZeroExtendExpr calls; done means the reproducer no longer segfaults and a regression test covers it.

Written by the indexing model from the issue text.

Assessment

Tech stack
c, linux
Domain
compilers
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
35/100

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