1*9880d681SAndroid Build Coastguard Worker; RUN: opt -S -adce < %s | FileCheck %s 2*9880d681SAndroid Build Coastguard Worker 3*9880d681SAndroid Build Coastguard Worker; While it is normally okay to DCE out calls to @readonly_function and 4*9880d681SAndroid Build Coastguard Worker; @readnone_function, we cannot do that if they're carrying operand 5*9880d681SAndroid Build Coastguard Worker; bundles since the presence of unknown operand bundles implies 6*9880d681SAndroid Build Coastguard Worker; arbitrary memory effects. 7*9880d681SAndroid Build Coastguard Worker 8*9880d681SAndroid Build Coastguard Workerdeclare void @readonly_function() readonly nounwind 9*9880d681SAndroid Build Coastguard Workerdeclare void @readnone_function() readnone nounwind 10*9880d681SAndroid Build Coastguard Worker 11*9880d681SAndroid Build Coastguard Workerdefine void @test0() { 12*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: @test0( 13*9880d681SAndroid Build Coastguard Worker entry: 14*9880d681SAndroid Build Coastguard Worker call void @readonly_function() [ "tag"() ] 15*9880d681SAndroid Build Coastguard Worker; CHECK: call void @readonly_function 16*9880d681SAndroid Build Coastguard Worker ret void 17*9880d681SAndroid Build Coastguard Worker} 18*9880d681SAndroid Build Coastguard Worker 19*9880d681SAndroid Build Coastguard Workerdefine void @test1() { 20*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: @test1( 21*9880d681SAndroid Build Coastguard Worker entry: 22*9880d681SAndroid Build Coastguard Worker call void @readnone_function() [ "tag"() ] 23*9880d681SAndroid Build Coastguard Worker; CHECK: call void @readnone_function 24*9880d681SAndroid Build Coastguard Worker ret void 25*9880d681SAndroid Build Coastguard Worker} 26*9880d681SAndroid Build Coastguard Worker 27*9880d681SAndroid Build Coastguard Workerdefine void @test2() { 28*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: @test2( 29*9880d681SAndroid Build Coastguard Worker entry: 30*9880d681SAndroid Build Coastguard Worker; CHECK-NOT: @readonly_function( 31*9880d681SAndroid Build Coastguard Worker call void @readonly_function() readonly [ "tag"() ] 32*9880d681SAndroid Build Coastguard Worker ret void 33*9880d681SAndroid Build Coastguard Worker} 34*9880d681SAndroid Build Coastguard Worker 35*9880d681SAndroid Build Coastguard Workerdefine void @test3() { 36*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: @test3( 37*9880d681SAndroid Build Coastguard Worker entry: 38*9880d681SAndroid Build Coastguard Worker; CHECK-NOT: @readnone_function( 39*9880d681SAndroid Build Coastguard Worker call void @readnone_function() readnone [ "tag"() ] 40*9880d681SAndroid Build Coastguard Worker ret void 41*9880d681SAndroid Build Coastguard Worker} 42*9880d681SAndroid Build Coastguard Worker 43*9880d681SAndroid Build Coastguard Workerdefine void @test4() { 44*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: @test4( 45*9880d681SAndroid Build Coastguard Worker entry: 46*9880d681SAndroid Build Coastguard Worker; CHECK-NOT: @readonly_function() 47*9880d681SAndroid Build Coastguard Worker call void @readonly_function() [ "deopt"() ] 48*9880d681SAndroid Build Coastguard Worker ret void 49*9880d681SAndroid Build Coastguard Worker} 50