[llvm] [SPIR-V] Support SPV_INTEL_fp_max_error extension for `!fpmath` metadata (PR #130619)

[Dmitry Sidorov via llvm-commits]

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@@ -2016,6 +2016,19 @@ void SPIRVEmitIntrinsics::insertSpirvDecorations(Instruction *I,
     processMemAliasingDecoration(LLVMContext::MD_alias_scope);
     processMemAliasingDecoration(LLVMContext::MD_noalias);
   }
+  // MD_fpmath
+  if (MDNode *MD = I->getMetadata("fpmath")) {
----------------
MrSidims wrote:

nit:
```suggestion
  if (MDNode *MD = I->getMetadata(LLVMContext::MD_fpmath)) {
```

https://github.com/llvm/llvm-project/pull/130619