39 lines
1.2 KiB
LLVM
39 lines
1.2 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -S < %s -early-cse -earlycse-debug-hash | FileCheck %s
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; Store-to-load forwarding across a @llvm.experimental.noalias.scope.decl.
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define float @s2l(float* %p) {
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; CHECK-LABEL: @s2l(
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; CHECK-NEXT: store float 0.000000e+00, float* [[P:%.*]], align 4
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; CHECK-NEXT: call void @llvm.experimental.noalias.scope.decl(metadata !0)
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; CHECK-NEXT: ret float 0.000000e+00
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;
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store float 0.0, float* %p
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call void @llvm.experimental.noalias.scope.decl(metadata !0)
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%t = load float, float* %p
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ret float %t
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}
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; Redundant load elimination across a @llvm.experimental.noalias.scope.decl.
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define float @rle(float* %p) {
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; CHECK-LABEL: @rle(
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; CHECK-NEXT: [[R:%.*]] = load float, float* [[P:%.*]], align 4
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; CHECK-NEXT: call void @llvm.experimental.noalias.scope.decl(metadata !0)
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; CHECK-NEXT: [[T:%.*]] = fadd float [[R]], [[R]]
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; CHECK-NEXT: ret float [[T]]
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;
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%r = load float, float* %p
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call void @llvm.experimental.noalias.scope.decl(metadata !0)
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%s = load float, float* %p
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%t = fadd float %r, %s
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ret float %t
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}
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declare void @llvm.experimental.noalias.scope.decl(metadata)
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!0 = !{ !1 }
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!1 = distinct !{ !1, !2 }
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!2 = distinct !{ !2 }
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