42 lines
1.0 KiB
LLVM
42 lines
1.0 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -instcombine -S | FileCheck %s
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@x = weak global i32 0
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define void @self_assign_1() {
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; CHECK-LABEL: @self_assign_1(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[TMP:%.*]] = load volatile i32, i32* @x, align 4
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; CHECK-NEXT: store volatile i32 [[TMP]], i32* @x, align 4
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; CHECK-NEXT: br label [[RETURN:%.*]]
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; CHECK: return:
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; CHECK-NEXT: ret void
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;
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entry:
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%tmp = load volatile i32, i32* @x
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store volatile i32 %tmp, i32* @x
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br label %return
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return:
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ret void
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}
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define void @volatile_store_before_unreachable(i1 %c, i8* %p) {
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; CHECK-LABEL: @volatile_store_before_unreachable(
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; CHECK-NEXT: br i1 [[C:%.*]], label [[TRUE:%.*]], label [[FALSE:%.*]]
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; CHECK: true:
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; CHECK-NEXT: store volatile i8 0, i8* [[P:%.*]], align 1
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; CHECK-NEXT: unreachable
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; CHECK: false:
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; CHECK-NEXT: ret void
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;
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br i1 %c, label %true, label %false
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true:
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store volatile i8 0, i8* %p
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unreachable
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false:
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ret void
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}
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