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1; Test that LICM uses basicaa to do alias analysis, which is capable of2; disambiguating some obvious cases.  If LICM is able to disambiguate the3; two pointers, then the load should be hoisted, and the store sunk.4 5; RUN: opt < %s -aa-pipeline=basic-aa -passes='loop-mssa(licm)' -S | FileCheck %s6target datalayout = "E-p:64:64:64-a0:0:8-f32:32:32-f64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-v64:64:64-v128:128:128"7 8@A = global i32 7               ; <ptr> [#uses=3]9@B = global i32 8               ; <ptr> [#uses=2]10@C = global [2 x i32] [ i32 4, i32 8 ]          ; <ptr> [#uses=2]11 12define i32 @test1(i1 %c) {13        %Atmp = load i32, ptr @A            ; <i32> [#uses=2]14        br label %Loop15 16Loop:           ; preds = %Loop, %017        %ToRemove = load i32, ptr @A                ; <i32> [#uses=1]18        store i32 %Atmp, ptr @B19        br i1 %c, label %Out, label %Loop20 21Out:            ; preds = %Loop22        %X = sub i32 %ToRemove, %Atmp           ; <i32> [#uses=1]23        ret i32 %X24        25; The Loop block should be empty after the load/store are promoted.26; CHECK:     @test127; CHECK:        load i32, ptr @A28; CHECK:         load i32, ptr @A29; CHECK:         store i32 %Atmp, ptr @B30; CHECK:      Loop:31; CHECK-NEXT:   br i1 %c, label %Out, label %Loop32; CHECK:      Out:33}34 35define i32 @test2(i1 %c) {36        br label %Loop37 38Loop:           ; preds = %Loop, %039        %AVal = load i32, ptr @A            ; <i32> [#uses=2]40        %C0 = getelementptr [2 x i32], ptr @C, i64 0, i64 0         ; <ptr> [#uses=1]41        store i32 %AVal, ptr %C042        %BVal = load i32, ptr @B            ; <i32> [#uses=2]43        %C1 = getelementptr [2 x i32], ptr @C, i64 0, i64 1         ; <ptr> [#uses=1]44        store i32 %BVal, ptr %C145        br i1 %c, label %Out, label %Loop46 47Out:            ; preds = %Loop48        %X = sub i32 %AVal, %BVal               ; <i32> [#uses=1]49        ret i32 %X50; The Loop block should be empty after the load/store are promoted.51; CHECK:     @test252; CHECK:      Loop:53; CHECK-NEXT:   br i1 %c, label %Out, label %Loop54}55 56