63 lines
1.7 KiB
LLVM
63 lines
1.7 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 2
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; RUN: opt -S -passes=gvn-hoist < %s | FileCheck %s
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; Make sure the two stores @B do not get hoisted past the load @B.
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@A = external global i8
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@B = external global ptr
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define ptr @Foo() {
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; CHECK-LABEL: define ptr @Foo() {
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; CHECK-NEXT: store i8 0, ptr @A, align 1
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; CHECK-NEXT: br i1 undef, label [[IF_THEN:%.*]], label [[IF_ELSE:%.*]]
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; CHECK: if.then:
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; CHECK-NEXT: store ptr null, ptr @B, align 8
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; CHECK-NEXT: ret ptr null
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; CHECK: if.else:
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; CHECK-NEXT: [[TMP1:%.*]] = load ptr, ptr @B, align 8
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; CHECK-NEXT: store ptr null, ptr @B, align 8
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; CHECK-NEXT: ret ptr [[TMP1]]
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;
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store i8 0, ptr @A
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br i1 undef, label %if.then, label %if.else
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if.then:
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store ptr null, ptr @B
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ret ptr null
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if.else:
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%1 = load ptr, ptr @B
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store ptr null, ptr @B
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ret ptr %1
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}
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; Make sure the two stores @B do not get hoisted past the store @GlobalVar.
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@GlobalVar = internal global i8 0
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define ptr @Fun() {
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; CHECK-LABEL: define ptr @Fun() {
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; CHECK-NEXT: store i8 0, ptr @A, align 1
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; CHECK-NEXT: br i1 undef, label [[IF_THEN:%.*]], label [[IF_ELSE:%.*]]
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; CHECK: if.then:
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; CHECK-NEXT: store ptr null, ptr @B, align 8
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; CHECK-NEXT: ret ptr null
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; CHECK: if.else:
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; CHECK-NEXT: store i8 0, ptr @GlobalVar, align 1
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; CHECK-NEXT: store ptr null, ptr @B, align 8
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; CHECK-NEXT: [[TMP1:%.*]] = load ptr, ptr @B, align 8
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; CHECK-NEXT: ret ptr [[TMP1]]
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;
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store i8 0, ptr @A
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br i1 undef, label %if.then, label %if.else
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if.then:
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store ptr null, ptr @B
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ret ptr null
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if.else:
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store i8 0, ptr @GlobalVar
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store ptr null, ptr @B
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%1 = load ptr, ptr @B
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ret ptr %1
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}
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