37 lines
1,001 B
LLVM
37 lines
1,001 B
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -S -passes=gvn < %s | FileCheck %s
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define i64 @test(ptr noalias %p, ptr noalias %q) {
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; CHECK-LABEL: @test(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: store ptr [[Q:%.*]], ptr [[P:%.*]], align 8
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; CHECK-NEXT: br i1 false, label [[IF:%.*]], label [[MERGE:%.*]]
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; CHECK: if:
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; CHECK-NEXT: call void @clobber(ptr [[P]])
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; CHECK-NEXT: br label [[MERGE]]
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; CHECK: merge:
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; CHECK-NEXT: store i64 1, ptr [[Q]], align 4
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; CHECK-NEXT: [[Q3:%.*]] = getelementptr i64, ptr [[Q]], i64 1
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; CHECK-NEXT: store i64 2, ptr [[Q3]], align 4
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; CHECK-NEXT: ret i64 1
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;
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entry:
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store ptr %q, ptr %p
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br i1 false, label %if, label %merge
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if:
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call void @clobber(ptr %p)
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br label %merge
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merge:
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%q2 = load ptr, ptr %p
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store i64 1, ptr %q2
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%v = load i64, ptr %q
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%q3 = getelementptr i64, ptr %q, i64 %v
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store i64 2, ptr %q3
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%v2 = load i64, ptr %q
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ret i64 %v2
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}
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declare void @clobber(ptr %p)
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