[llvm] [SPIR-V] Derive FPFastMathMode from nofpclass attributes on OpenCL builtins (PR #188984)

[Dmitry Sidorov via llvm-commits]

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@@ -0,0 +1,36 @@
+; RUN: llc -verify-machineinstrs -O0 -mtriple=spirv64-unknown-unknown --spirv-ext=+SPV_KHR_float_controls2 %s -o - | FileCheck %s
+; RUN: %if spirv-tools %{ llc -O0 -mtriple=spirv64-unknown-unknown --spirv-ext=+SPV_KHR_float_controls2 %s -o - -filetype=obj | spirv-val %}
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MrSidims wrote:

per my understanding this is redundant if we are not on Shader compilation path
```suggestion
; RUN: llc -verify-machineinstrs -O0 -mtriple=spirv64-unknown-unknown %s -o - | FileCheck %s
; RUN: %if spirv-tools %{ llc -O0 -mtriple=spirv64-unknown-unknown  %s -o - -filetype=obj | spirv-val %}
```

https://github.com/llvm/llvm-project/pull/188984