32 lines
753 B
LLVM
32 lines
753 B
LLVM
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; This testcase ensures that CFL AA responds conservatively when we union
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; groups of pointers together through ternary/conditional operations
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; Derived from:
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; void foo(bool c) {
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; char a, b;
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; char *m = c ? &a : &b;
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; *m;
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; }
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;
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; RUN: opt < %s -disable-basic-aa -cfl-steens-aa -aa-eval -print-may-aliases -disable-output 2>&1 | FileCheck %s
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%T = type { i32, [10 x i8] }
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; CHECK: Function: test
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define void @test(i1 %C) {
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; CHECK: 10 Total Alias Queries Performed
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; CHECK: 4 no alias responses
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%M = alloca %T*, align 8 ; NoAlias with %A, %B, %MS, %AP
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%A = alloca %T, align 8
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%B = alloca %T, align 8
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%MS = select i1 %C, %T* %B, %T* %A
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store %T* %MS, %T** %M
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%AP = load %T*, %T** %M ; PartialAlias with %A, %B
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ret void
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}
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