[llvm] SPIRV: Set NoPHIs property after selection (PR #136327)

[Mikhail R. Gadelha via llvm-commits]

mikhailramalho wrote:

The errors mentioned in PR #135277 still happen if we apply the patch here without 129347733db518861cd36aa0a293334f4185ddcb:
```
Failed Tests (15):
  LLVM :: CodeGen/AArch64/fast-isel-cmp-vec.ll
  LLVM :: CodeGen/AArch64/wineh4.mir
  LLVM :: CodeGen/AArch64/wineh8.mir
  LLVM :: CodeGen/SPIRV/assume.ll
  LLVM :: CodeGen/SPIRV/expect.ll
  LLVM :: CodeGen/SPIRV/hlsl-resources/BufferStore.ll
  LLVM :: CodeGen/SPIRV/opt-gepoperator-of-gvar.ll
  LLVM :: CodeGen/SPIRV/optimizations/add-check-overflow.ll
  LLVM :: CodeGen/SPIRV/optimizations/switch-condition-type.ll
  LLVM :: Frontend/HLSL/empty_cs_entry.ll
  LLVM-Unit :: Target/SPIRV/./SPIRVTests/40/56
  LLVM-Unit :: Target/SPIRV/./SPIRVTests/41/56
  LLVM-Unit :: Target/SPIRV/./SPIRVTests/42/56
  LLVM-Unit :: Target/SPIRV/./SPIRVTests/43/56
  LLVM-Unit :: Target/SPIRV/./SPIRVTests/49/56
```



https://github.com/llvm/llvm-project/pull/136327