derek.holloway
7502bf64a4
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71 lines
2.7 KiB
LLVM
71 lines
2.7 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 6
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; RUN: opt < %s -passes=gvn -enable-load-pre -S | FileCheck %s --check-prefixes=CHECK,MDEP
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; RUN: opt < %s -passes='gvn<memoryssa>' -enable-load-pre -S | FileCheck %s --check-prefixes=CHECK,MSSA
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; Ensure AA metadata are combined properly while hoisting the load.
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@g_bool = global i8 0, align 1
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@g_long = global i64 0, align 8
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define void @test_combine_metadata(i1 %c, i64 %arg) {
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; CHECK-LABEL: define void @test_combine_metadata(
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; CHECK-SAME: i1 [[C:%.*]], i64 [[ARG:%.*]]) {
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; CHECK-NEXT: [[ENTRY:.*]]:
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; CHECK-NEXT: [[VAL:%.*]] = alloca i8, align 1
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; CHECK-NEXT: br label %[[LOOP:.*]]
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; CHECK: [[LOOP]]:
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; CHECK-NEXT: [[PHI:%.*]] = phi ptr [ @g_long, %[[IF_THEN:.*]] ], [ [[VAL]], %[[ENTRY]] ]
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; CHECK-NEXT: store i64 [[ARG]], ptr @g_long, align 8, !tbaa [[LONG_TBAA0:![0-9]+]]
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; CHECK-NEXT: [[TRUNC:%.*]] = trunc i64 [[ARG]] to i8
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; CHECK-NEXT: store i8 [[TRUNC]], ptr [[VAL]], align 1, !tbaa [[_BOOL_TBAA4:![0-9]+]]
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; CHECK-NEXT: [[V1_PRE:%.*]] = load i8, ptr [[PHI]], align 1, !tbaa [[CHAR_TBAA6:![0-9]+]]
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; CHECK-NEXT: br i1 [[C]], label %[[IF_THEN]], label %[[IF_ELSE:.*]]
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; CHECK: [[IF_ELSE]]:
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; CHECK-NEXT: store i8 [[V1_PRE]], ptr @g_bool, align 8, !tbaa [[LONG_TBAA0]]
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; CHECK-NEXT: br label %[[IF_THEN]]
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; CHECK: [[IF_THEN]]:
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; CHECK-NEXT: store i8 [[V1_PRE]], ptr @g_bool, align 1
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; CHECK-NEXT: br label %[[LOOP]]
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;
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entry:
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%val = alloca i8, align 1
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br label %loop
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loop:
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%phi = phi ptr [ @g_long, %if.then ], [ %val, %entry ]
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store i64 %arg, ptr @g_long, align 8, !tbaa !3
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%trunc = trunc i64 %arg to i8
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store i8 %trunc, ptr %val, align 1, !tbaa !5
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br i1 %c, label %if.then, label %if.else
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if.else:
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%v2 = load i8, ptr %phi, align 1, !tbaa !7
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store i8 %v2, ptr @g_bool, align 8, !tbaa !3
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br label %if.then
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if.then:
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%v1 = load i8, ptr %phi, align 1, !tbaa !5
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store i8 %v1, ptr @g_bool, align 1
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br label %loop
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}
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!0 = !{!"Simple C/C++ TBAA"}
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!1 = !{!"omnipotent char", !0, i64 0}
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!2 = !{!"long", !1, i64 0}
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!3 = !{!2, !2, i64 0}
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!4 = !{!"_Bool", !1, i64 0}
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!5 = !{!4, !4, i64 0}
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!7 = !{!1, !1, i64 0}
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;.
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; CHECK: [[LONG_TBAA0]] = !{[[META1:![0-9]+]], [[META1]], i64 0}
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; CHECK: [[META1]] = !{!"long", [[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/C++ TBAA"}
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; CHECK: [[_BOOL_TBAA4]] = !{[[META5:![0-9]+]], [[META5]], i64 0}
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; CHECK: [[META5]] = !{!"_Bool", [[META2]], i64 0}
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; CHECK: [[CHAR_TBAA6]] = !{[[META2]], [[META2]], i64 0}
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;.
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;; NOTE: These prefixes are unused and the list is autogenerated. Do not add tests below this line:
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; MDEP: {{.*}}
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; MSSA: {{.*}}
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