4e213159af
Add handling for FPFastMathMode in SPIR-V shaders. This is a first pass that simply does a direct translation when the proper extension is available. This will unblock work for HLSL. However, it is not a full solution. The default math mode for spir-v is determined by the API. When targeting Vulkan many of the fast math options are assumed. We should do something particular when targeting Vulkan. We will also need to handle the hlsl "precise" keyword correctly when FPFastMathMode is not available. Unblockes https://github.com/llvm/llvm-project/issues/140739, but we are keeing it open to track the remaining issues mentioned above.
23 lines
1.0 KiB
LLVM
23 lines
1.0 KiB
LLVM
; RUN: llc -O0 -mtriple=spirv1.6-vulkan1.3-compute %s -o - | FileCheck %s --check-prefix=CHECK-NOEXT
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; RUN: %if spirv-tools %{ llc -O0 -mtriple=spirv1.6-vulkan1.3-compute %s -o - -filetype=obj | spirv-val --target-env vulkan1.3 %}
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; RUN: llc -O0 -mtriple=spirv1.6-vulkan1.3-compute -spirv-ext=+SPV_KHR_float_controls2 %s -o - | FileCheck %s --check-prefix=CHECK-EXT
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; RUN: %if spirv-tools %{ llc -O0 -mtriple=spirv1.6-vulkan1.3-compute -spirv-ext=+SPV_KHR_float_controls2 %s -o - -filetype=obj | spirv-val --target-env vulkan1.3 %}
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; CHECK-NOEXT-NOT: OpDecorate FPFastMathMode
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; CHECK-EXT: OpCapability FloatControls2
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; CHECK-EXT: OpExtension "SPV_KHR_float_controls2"
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; CHECK-EXT: OpDecorate {{%[0-9]+}} FPFastMathMode NotNaN|NotInf|NSZ|AllowRecip|Fast
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define hidden spir_func float @foo(float %0) local_unnamed_addr {
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%2 = fmul reassoc nnan ninf nsz arcp afn float %0, 2.000000e+00
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ret float %2
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}
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define void @main() local_unnamed_addr #1 {
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ret void
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}
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attributes #1 = { "hlsl.numthreads"="8,1,1" "hlsl.shader"="compute" }
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