Cranelift: major performance regression (-14.93%) for spidermonkey-json

Tested with sightglass for spidermonkey-json: https://github.com/bytecodealliance/sightglass/blob/main/benchmarks/spidermonkey/spidermonkey-json.wasm

Phase | Base | Upstream | Relative Performance
-- | -- | -- | --
Compilation | 30125453533 | 29900200416 | -0.75%
Instantiation | 811322 | 803595.3 | +0.96%
Execution | 544499791.7 | 640038909.6 | -14.93%

* The unit of measure is CPU cycle (sightglass default)
* Base is a wasmtime/cranelift variant with no mid-end ISLE optimization rules
* Upstream is the latest version of wasmtime/cranelift.

### Expected Results

Spidermonkey represents a major workload for wasmtime.
Mid-end optimization should not regress performance.

### Actual Results

The performance is severely regressed.

### Versions and Environment

Cranelift version or commit: 8315a90ced0d01bdddfea92af514a6cd30da4abf

Operating system: Linux, x64

Architecture

lscpu

```
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Address sizes: 46 bits physical, 48 bits virtual
Byte Order: Little Endian
CPU(s): 64
On-line CPU(s) list: 0-63
Vendor ID: GenuineIntel
Model name: Intel(R) Xeon(R) Gold 6226R CPU @ 2.90GHz
CPU family: 6
Model: 85
Thread(s) per core: 2
Core(s) per socket: 16
Socket(s): 2
Stepping: 7
CPU(s) scaling MHz: 33%
CPU max MHz: 3900.0000
CPU min MHz: 1200.0000
BogoMIPS: 5800.00
Flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc art arch
_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid dca sse4_1 s
se4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch cpuid_fault epb cat_l3 cdp_l3 intel_ppin ssbd mba ibrs ibpb stibp ibrs_en
hanced tpr_shadow flexpriority ept vpid ept_ad fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid cqm mpx rdt_a avx512f avx512dq rdseed adx smap clflushopt clwb intel_p
t avx512cd avx512bw avx512vl xsaveopt xsavec xgetbv1 xsaves cqm_llc cqm_occup_llc cqm_mbm_total cqm_mbm_local dtherm ida arat pln pts vnmi pku ospke avx512_vnni md_clear
flush_l1d arch_capabilities ibpb_exit_to_user
Virtualization features:
Virtualization: VT-x
Caches (sum of all):
L1d: 1 MiB (32 instances)
L1i: 1 MiB (32 instances)
L2: 32 MiB (32 instances)
L3: 44 MiB (2 instances)
NUMA:
NUMA node(s): 2
NUMA node0 CPU(s): 0-15,32-47
NUMA node1 CPU(s): 16-31,48-63
Vulnerabilities:
Gather data sampling: Mitigation; Microcode
Indirect target selection: Mitigation; Aligned branch/return thunks
Itlb multihit: KVM: Mitigation: VMX disabled
L1tf: Not affected
Mds: Not affected
Meltdown: Not affected
Mmio stale data: Mitigation; Clear CPU buffers; SMT vulnerable
Reg file data sampling: Not affected
Retbleed: Mitigation; Enhanced IBRS
Spec rstack overflow: Not affected
Spec store bypass: Mitigation; Speculative Store Bypass disabled via prctl
Spectre v1: Mitigation; usercopy/swapgs barriers and __user pointer sanitization
Spectre v2: Mitigation; Enhanced / Automatic IBRS; IBPB conditional; PBRSB-eIBRS SW sequence; BHI SW loop, KVM SW loop
Srbds: Not affected
Tsa: Not affected
Tsx async abort: Mitigation; TSX disabled
Vmscape: Mitigation; IBPB before exit to userspace
```

### Extra Info