derek.holloway
7502bf64a4
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34 lines
1.3 KiB
LLVM
34 lines
1.3 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 6
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; RUN: opt -passes=instcombine -S < %s | FileCheck %s
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; Check that load to load forwarding works with non aliasing store inbetween.
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define i32 @test_load_store_load_combine(ptr, ptr) {
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; CHECK-LABEL: define i32 @test_load_store_load_combine(
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; CHECK-SAME: ptr [[TMP0:%.*]], ptr [[TMP1:%.*]]) {
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; CHECK-NEXT: [[A:%.*]] = load i32, ptr [[TMP0]], align 4, !tbaa [[INT_TBAA0:![0-9]+]]
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; CHECK-NEXT: [[F:%.*]] = sitofp i32 [[A]] to float
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; CHECK-NEXT: store float [[F]], ptr [[TMP1]], align 4, !tbaa [[FLOAT_TBAA4:![0-9]+]]
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; CHECK-NEXT: ret i32 [[A]]
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;
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%a = load i32, ptr %0, align 4, !tbaa !0
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%f = sitofp i32 %a to float
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store float %f, ptr %1, align 4, !tbaa !4
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%b = load i32, ptr %0, align 4, !tbaa !0
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ret i32 %b
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}
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!0 = !{!1, !1, i64 0}
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!1 = !{!"int", !2, i64 0}
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!2 = !{!"omnipotent char", !3, i64 0}
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!3 = !{!"Simple C++ TBAA"}
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!4 = !{!5, !5, i64 0}
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!5 = !{!"float", !2, i64 0}
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;.
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; CHECK: [[INT_TBAA0]] = !{[[META1:![0-9]+]], [[META1]], i64 0}
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; CHECK: [[META1]] = !{!"int", [[META2:![0-9]+]], i64 0}
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; CHECK: [[META2]] = !{!"omnipotent char", [[META3:![0-9]+]], i64 0}
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; CHECK: [[META3]] = !{!"Simple C++ TBAA"}
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; CHECK: [[FLOAT_TBAA4]] = !{[[META5:![0-9]+]], [[META5]], i64 0}
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; CHECK: [[META5]] = !{!"float", [[META2]], i64 0}
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;.
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