microsoft / microsoft/DirectXShaderCompiler

Clang::CodeGenSPIRV test for attribute.domain.isoline.hlsl is failing on ARM64 Release on Windows

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bug spirv
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Description

Description
Clang::CodeGenSPIRV test for attribute.domain.isoline.hlsl is failing on ARM64 Release on Windows

Steps to Reproduce
hctbuild -spirv -arm64 -Release
hcttest -spirv -arm64 on ARM64 machine such as Surface Pro.

Actual Behavior

FAIL: Clang :: CodeGenSPIRV/attribute.domain.isoline.hlsl (10 of 1986)
******************** TEST 'Clang :: CodeGenSPIRV/attribute.domain.isoline.hlsl' FAILED ********************
Script:
--
C:\agent\_work\1\b\build\ARM64\DXC\Release/bin\dxc.EXE -T hs_6_0 -E SubDToBezierHS -fcgl  C:\agent\_work\1\s\DXC\tools\clang\test\CodeGenSPIRV\attribute.domain.isoline.hlsl -spirv | C:\agent\_work\1\b\build\ARM64\DXC\Release/bin\FileCheck.EXE C:\agent\_work\1\s\DXC\tools\clang\test\CodeGenSPIRV\attribute.domain.isoline.hlsl
--
Exit Code: 2147500037

Command Output (stdout):
--
Command 0: "C:\agent\_work\1\b\build\ARM64\DXC\Release/bin\dxc.EXE" "-T" "hs_6_0" "-E" "SubDToBezierHS" "-fcgl" "C:\agent\_work\1\s\DXC\tools\clang\test\CodeGenSPIRV\attribute.domain.isoline.hlsl" "-spirv"
Command 0 Result: 2147500037
Command 0 Output:


Command 0 Stderr:
fatal error: generated SPIR-V is invalid: ControlBarrier: Memory Semantics can have at most one of the following bits set: Acquire, Release, AcquireRelease or SequentiallyConsistent

  OpControlBarrier %uint_2 %uint_4 %uint_0



note: please file a bug report on https://github.com/Microsoft/DirectXShaderCompiler/issues with source code if possible





Command 1: "C:\agent\_work\1\b\build\ARM64\DXC\Release/bin\FileCheck.EXE" "C:\agent\_work\1\s\DXC\tools\clang\test\CodeGenSPIRV\attribute.domain.isoline.hlsl"
Command 1 Result: 2
Command 1 Output:


Command 1 Stderr:
FileCheck error: '-' is empty.

Environment
DXC version: main as of 1/22/2024
Surface Pro, Windows 11 (26016.1001, arm64)

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reproducing Clang::CodeGenSPIRV/attribute.domain.isoline.hlsl with hctbuild -spirv -arm64 -Release and hcttest -spirv -arm64 on ARM64 Windows. Read tools/clang/test/CodeGenSPIRV/attribute.domain.isoline.hlsl and its FileCheck expectations, then trace the generated OpControlBarrier diagnostics. Done means this test produces valid SPIR-V and passes on the reported configuration.

Written by the indexing model from the issue text.

Assessment

Tech stack
cpp
Domain
compilers, operating-systems, testing-qa
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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