293a668329
This PR adds the WavePrefixCountBits function to HLSL, including spirv and DXIL code generation. Fixes https://github.com/llvm/llvm-project/issues/99171
11 lines
376 B
LLVM
11 lines
376 B
LLVM
; RUN: opt -S -scalarizer -dxil-op-lower -mtriple=dxil-pc-shadermodel6.3-library < %s | FileCheck %s
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; Test that WavePrefixCountBits maps down to the DirectX op
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define noundef i32 @wave_prefix_count_bits(i1 noundef %expr) {
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entry:
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; CHECK: call i32 @dx.op.wavePrefixOp(i32 136, i1 %expr)
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%ret = call i32 @llvm.dx.wave.prefix.bit.count(i1 %expr)
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ret i32 %ret
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}
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