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