1*9880d681SAndroid Build Coastguard Worker; RUN: opt < %s -basicaa -globals-aa -gvn -S | FileCheck %s 2*9880d681SAndroid Build Coastguard Worker 3*9880d681SAndroid Build Coastguard Worker; This test requires the use of previous analyses to determine that 4*9880d681SAndroid Build Coastguard Worker; doesnotmodX does not modify X (because 'sin' doesn't). 5*9880d681SAndroid Build Coastguard Worker 6*9880d681SAndroid Build Coastguard Worker@X = internal global i32 4 ; <i32*> [#uses=2] 7*9880d681SAndroid Build Coastguard Worker 8*9880d681SAndroid Build Coastguard Workerdeclare double @sin(double) readnone 9*9880d681SAndroid Build Coastguard Worker 10*9880d681SAndroid Build Coastguard Workerdefine i32 @test(i32* %P) { 11*9880d681SAndroid Build Coastguard Worker; CHECK: @test 12*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: store i32 12, i32* @X 13*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: call double @doesnotmodX(double 1.000000e+00) 14*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: ret i32 12 15*9880d681SAndroid Build Coastguard Worker store i32 12, i32* @X 16*9880d681SAndroid Build Coastguard Worker call double @doesnotmodX( double 1.000000e+00 ) ; <double>:1 [#uses=0] 17*9880d681SAndroid Build Coastguard Worker %V = load i32, i32* @X ; <i32> [#uses=1] 18*9880d681SAndroid Build Coastguard Worker ret i32 %V 19*9880d681SAndroid Build Coastguard Worker} 20*9880d681SAndroid Build Coastguard Worker 21*9880d681SAndroid Build Coastguard Workerdefine double @doesnotmodX(double %V) { 22*9880d681SAndroid Build Coastguard Worker %V2 = call double @sin( double %V ) readnone ; <double> [#uses=1] 23*9880d681SAndroid Build Coastguard Worker ret double %V2 24*9880d681SAndroid Build Coastguard Worker} 25