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.
21 lines
935 B
LLVM
21 lines
935 B
LLVM
; RUN: not opt -S -dxil-forward-handle-accesses -mtriple=dxil--shadermodel6.3-library %s 2>&1 | FileCheck %s
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; CHECK: error: Load of "buf" is not a global resource handle
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%"class.hlsl::RWStructuredBuffer" = type { target("dx.RawBuffer", <4 x float>, 1, 0) }
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@Buf = internal global %"class.hlsl::RWStructuredBuffer" poison, align 4
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define float @f() {
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entry:
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%buf = alloca target("dx.RawBuffer", <4 x float>, 1, 0), align 4
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%h = call target("dx.RawBuffer", <4 x float>, 1, 0) @llvm.dx.resource.handlefrombinding(i32 0, i32 0, i32 1, i32 0, i1 false)
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store target("dx.RawBuffer", <4 x float>, 1, 0) %h, ptr %buf, align 4
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%b = load target("dx.RawBuffer", <4 x float>, 1, 0), ptr %buf, align 4
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%l = call { <4 x float>, i1 } @llvm.dx.resource.load.rawbuffer(target("dx.RawBuffer", <4 x float>, 1, 0) %b, i32 0, i32 0)
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%x = extractvalue { <4 x float>, i1 } %l, 0
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%v = extractelement <4 x float> %x, i32 0
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ret float %v
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}
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