a83b4a2dc9
This pass attempts to forward resource handle creation to accesses of the handle global. This avoids dependence on optimizations like CSE and GlobalOpt for correctness of DXIL. Fixes #134574.
24 lines
1.8 KiB
LLVM
24 lines
1.8 KiB
LLVM
; RUN: opt -S -dxil-forward-handle-accesses -mtriple=dxil--shadermodel6.3-library %s | FileCheck %s
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%__cblayout_CB = type <{ float, i32, i32 }>
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%struct.Scalars = type { float, i32, i32 }
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@CB.cb = local_unnamed_addr global target("dx.CBuffer", target("dx.Layout", %__cblayout_CB, 12, 0, 4, 8)) poison
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define void @main() local_unnamed_addr #1 {
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entry:
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; CHECK: [[CB:%.*]] = tail call target({{.*}}) @llvm.dx.resource.handlefrombinding
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%h = tail call target("dx.CBuffer", target("dx.Layout", %__cblayout_CB, 12, 0, 4, 8)) @llvm.dx.resource.handlefrombinding(i32 0, i32 0, i32 1, i32 0, i1 false)
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store target("dx.CBuffer", target("dx.Layout", %__cblayout_CB, 12, 0, 4, 8)) %h, ptr @CB.cb, align 4
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%_ZL3Out_h.i.i = tail call target("dx.RawBuffer", %struct.Scalars, 1, 0) @llvm.dx.resource.handlefrombinding(i32 0, i32 0, i32 1, i32 0, i1 false)
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; CHECK-NOT: load target({{.*}}), ptr @CB.cb
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%cb = load target("dx.CBuffer", target("dx.Layout", %__cblayout_CB, 12, 0, 4, 8)), ptr @CB.cb, align 4
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; CHECK: call { float, float, float, float } @llvm.dx.resource.load.cbufferrow.4.{{.*}}(target({{.*}}) [[CB]], i32 0)
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%0 = call { float, float, float, float } @llvm.dx.resource.load.cbufferrow.4(target("dx.CBuffer", target("dx.Layout", %__cblayout_CB, 12, 0, 4, 8)) %cb, i32 0)
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%1 = extractvalue { float, float, float, float } %0, 0
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call void @llvm.dx.resource.store.rawbuffer(target("dx.RawBuffer", %struct.Scalars, 1, 0) %_ZL3Out_h.i.i, i32 0, i32 0, float %1)
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ret void
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}
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attributes #0 = { mustprogress nofree noinline norecurse nosync nounwind willreturn memory(readwrite, argmem: write, inaccessiblemem: none) "approx-func-fp-math"="false" "frame-pointer"="all" "hlsl.numthreads"="1,1,1" "hlsl.shader"="compute" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="true" "stack-protector-buffer-size"="8" }
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