1; RUN: opt < %s -aa-pipeline=basic-aa,globals-aa -passes='require<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 ; <ptr> [#uses=2] 7 8declare double @sin(double) readnone 9 10define i32 @test(ptr %P) { 11; CHECK: @test 12; CHECK-NEXT: store i32 12, ptr @X 13; CHECK-NEXT: call double @doesnotmodX(double 1.000000e+00) 14; CHECK-NEXT: ret i32 12 15 store i32 12, ptr @X 16 call double @doesnotmodX( double 1.000000e+00 ) ; <double>:1 [#uses=0] 17 %V = load i32, ptr @X ; <i32> [#uses=1] 18 ret i32 %V 19} 20 21define double @doesnotmodX(double %V) { 22 %V2 = call double @sin( double %V ) readnone ; <double> [#uses=1] 23 ret double %V2 24} 25