derek.holloway
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29 lines
1.3 KiB
LLVM
29 lines
1.3 KiB
LLVM
; spirv-legalize-pointer-cast consumes spv.ptrcast intrinsics produced by
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; spirv-emit-intrinsics, so we chain both passes and check the ptrcast is
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; rewritten into a sequence of typed loads + gep/extractelt.
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;
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; RUN: opt -S -passes='spirv-emit-intrinsics,function(spirv-legalize-pointer-cast)' -mtriple=spirv-unknown-vulkan-compute < %s | FileCheck %s
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@M = internal addrspace(10) global [4 x <2 x float>] zeroinitializer, align 4
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@OUT = internal addrspace(10) global float zeroinitializer, align 4
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; Loading a <5 x float> through a [4 x <2 x float>] forces emit-intrinsics to
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; insert spv.ptrcast; legalize-pointer-cast lowers it to typed <2 x float>
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; loads stitched together with extractelt. After the pass, no spv.ptrcast call
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; should remain.
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define spir_func void @main() #0 {
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; CHECK-LABEL: define spir_func void @main(
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; CHECK-NOT: call {{.*}}@llvm.spv.ptrcast
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; CHECK: call ptr addrspace(10) {{.*}}@llvm.spv.gep.p10.p10(i1 false, ptr addrspace(10) @M, i32 0, i32 0)
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; CHECK: load <2 x float>, ptr addrspace(10)
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; CHECK: call float @llvm.spv.extractelt.f32.v2f32.i32(<2 x float>
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entry:
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%v = load <5 x float>, ptr addrspace(10) @M, align 4
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%x = extractelement <5 x float> %v, i32 4
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store float %x, ptr addrspace(10) @OUT, align 4
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ret void
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}
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attributes #0 = { "hlsl.numthreads"="1,1,1" "hlsl.shader"="compute" }
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