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