derek.holloway
7502bf64a4
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55 lines
2.2 KiB
LLVM
55 lines
2.2 KiB
LLVM
; RUN: opt -S -dxil-cbuffer-access -mtriple=dxil--shadermodel6.3-library %s | FileCheck %s
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;
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; Check that two uses of an identical GEP constant expression generates two
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; separate getpointer/gep pairs in the output.
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; cbuffer CB : register(b0) {
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; float a1[3];
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; }
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%__cblayout_CB = type <{ [2 x <{ float, [12 x i8] }>], float }>
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@CB.cb = local_unnamed_addr global target("dx.CBuffer", %__cblayout_CB) poison
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; CHECK: @CB.cb =
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; CHECK-NOT: external {{.*}} addrspace(2) global
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@a1 = external addrspace(2) global <{ [2 x <{ float, [12 x i8] }>], float }>, align 4
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; CHECK: define void @f
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define void @f(ptr %dst) {
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entry:
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; CHECK: [[PTR:%.*]] = call ptr addrspace(2) @llvm.dx.resource.getpointer.{{.*}}(target("dx.CBuffer", %__cblayout_CB) {{%.*}}, i32 0)
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; CHECK: [[GEP:%.*]] = getelementptr inbounds nuw i8, ptr addrspace(2) [[PTR]], i32 16
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; CHECK-COUNT-2: load float, ptr addrspace(2) [[GEP]]
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%a1 = load float, ptr addrspace(2) getelementptr inbounds nuw (i8, ptr addrspace(2) @a1, i32 16), align 4
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store float %a1, ptr %dst, align 32
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%a2 = load float, ptr addrspace(2) getelementptr inbounds nuw (i8, ptr addrspace(2) @a1, i32 16), align 4
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store float %a2, ptr %dst, align 32
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ret void
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}
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; CHECK: define void @g
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define void @g(ptr %dst) {
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entry:
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; CHECK: [[PTR1:%.*]] = call ptr addrspace(2) @llvm.dx.resource.getpointer.{{.*}}(target("dx.CBuffer", %__cblayout_CB) {{%.*}}, i32 0)
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; CHECK: [[GEP1:%.*]] = getelementptr inbounds nuw i8, ptr addrspace(2) [[PTR1]], i32 16
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; CHECK: load float, ptr addrspace(2) [[GEP1]]
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%a1 = load float, ptr addrspace(2) getelementptr inbounds nuw (i8, ptr addrspace(2) @a1, i32 16), align 4
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store float %a1, ptr %dst, align 32
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br label %next
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next:
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; CHECK: [[PTR2:%.*]] = call ptr addrspace(2) @llvm.dx.resource.getpointer.{{.*}}(target("dx.CBuffer", %__cblayout_CB) {{%.*}}, i32 0)
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; CHECK: [[GEP2:%.*]] = getelementptr inbounds nuw i8, ptr addrspace(2) [[PTR2]], i32 16
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; CHECK: load float, ptr addrspace(2) [[GEP2]]
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%a2 = load float, ptr addrspace(2) getelementptr inbounds nuw (i8, ptr addrspace(2) @a1, i32 16), align 4
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store float %a2, ptr %dst, align 32
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ret void
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}
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; CHECK-NOT: !hlsl.cbs =
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!hlsl.cbs = !{!0}
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!0 = !{ptr @CB.cb, ptr addrspace(2) @a1}
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