23 lines
834 B
LLVM
23 lines
834 B
LLVM
; RUN: opt -aa-pipeline=basic-aa -passes=aa-eval -print-all-alias-modref-info -disable-output < %s 2>&1 | FileCheck %s
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; A call return value is not always an escape source, because
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; CaptureTracking can look through some calls. The test is constructed to
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; hit the getUnderlyingObject() recursion limit.
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define i32 @test() {
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; CHECK-LABEL: Function: test
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; CHECK-NEXT: MustAlias: i32* %a, i32* %p7
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%a = alloca i32
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%p1 = call ptr @llvm.strip.invariant.group.p0(ptr %a)
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%p2 = getelementptr i8, ptr %p1, i64 1
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%p3 = getelementptr i8, ptr %p2, i64 -1
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%p4 = getelementptr i8, ptr %p3, i64 1
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%p5 = getelementptr i8, ptr %p4, i64 -1
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%p6 = getelementptr i8, ptr %p5, i64 1
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%p7 = getelementptr i8, ptr %p6, i64 -1
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%v = load i32, ptr %a
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store i32 -1, ptr %p7
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ret i32 %v
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}
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declare ptr @llvm.strip.invariant.group.p0(ptr)
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