1*9880d681SAndroid Build Coastguard Worker; RUN: llc < %s -mtriple=arm-apple-darwin -relocation-model=dynamic-no-pic -mcpu=cortex-a8 -asm-verbose=false | FileCheck %s 2*9880d681SAndroid Build Coastguard Worker 3*9880d681SAndroid Build Coastguard Workerdeclare void @bar(i32) 4*9880d681SAndroid Build Coastguard Workerdeclare void @car(i32) 5*9880d681SAndroid Build Coastguard Workerdeclare void @dar(i32) 6*9880d681SAndroid Build Coastguard Workerdeclare void @ear(i32) 7*9880d681SAndroid Build Coastguard Workerdeclare void @far(i32) 8*9880d681SAndroid Build Coastguard Workerdeclare i1 @qux() 9*9880d681SAndroid Build Coastguard Worker 10*9880d681SAndroid Build Coastguard Worker@GHJK = global i32 0 11*9880d681SAndroid Build Coastguard Worker 12*9880d681SAndroid Build Coastguard Workerdeclare i8* @choose(i8*, i8*) 13*9880d681SAndroid Build Coastguard Worker 14*9880d681SAndroid Build Coastguard Worker; BranchFolding should tail-duplicate the indirect jump to avoid 15*9880d681SAndroid Build Coastguard Worker; redundant branching. 16*9880d681SAndroid Build Coastguard Worker 17*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: tail_duplicate_me: 18*9880d681SAndroid Build Coastguard Worker; CHECK: qux 19*9880d681SAndroid Build Coastguard Worker; CHECK: movw r{{[0-9]+}}, :lower16:_GHJK 20*9880d681SAndroid Build Coastguard Worker; CHECK: movt r{{[0-9]+}}, :upper16:_GHJK 21*9880d681SAndroid Build Coastguard Worker; CHECK: str r 22*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: bx r 23*9880d681SAndroid Build Coastguard Worker; CHECK: qux 24*9880d681SAndroid Build Coastguard Worker; CHECK: movw r{{[0-9]+}}, :lower16:_GHJK 25*9880d681SAndroid Build Coastguard Worker; CHECK: movt r{{[0-9]+}}, :upper16:_GHJK 26*9880d681SAndroid Build Coastguard Worker; CHECK: str r 27*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: bx r 28*9880d681SAndroid Build Coastguard Worker; CHECK: movw r{{[0-9]+}}, :lower16:_GHJK 29*9880d681SAndroid Build Coastguard Worker; CHECK: movt r{{[0-9]+}}, :upper16:_GHJK 30*9880d681SAndroid Build Coastguard Worker; CHECK: str r 31*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: bx r 32*9880d681SAndroid Build Coastguard Worker 33*9880d681SAndroid Build Coastguard Workerdefine void @tail_duplicate_me() nounwind { 34*9880d681SAndroid Build Coastguard Workerentry: 35*9880d681SAndroid Build Coastguard Worker %a = call i1 @qux() 36*9880d681SAndroid Build Coastguard Worker %c = call i8* @choose(i8* blockaddress(@tail_duplicate_me, %return), 37*9880d681SAndroid Build Coastguard Worker i8* blockaddress(@tail_duplicate_me, %altret)) 38*9880d681SAndroid Build Coastguard Worker br i1 %a, label %A, label %next 39*9880d681SAndroid Build Coastguard Workernext: 40*9880d681SAndroid Build Coastguard Worker %b = call i1 @qux() 41*9880d681SAndroid Build Coastguard Worker br i1 %b, label %B, label %C 42*9880d681SAndroid Build Coastguard Worker 43*9880d681SAndroid Build Coastguard WorkerA: 44*9880d681SAndroid Build Coastguard Worker call void @bar(i32 0) 45*9880d681SAndroid Build Coastguard Worker store i32 0, i32* @GHJK 46*9880d681SAndroid Build Coastguard Worker br label %M 47*9880d681SAndroid Build Coastguard Worker 48*9880d681SAndroid Build Coastguard WorkerB: 49*9880d681SAndroid Build Coastguard Worker call void @car(i32 1) 50*9880d681SAndroid Build Coastguard Worker store i32 0, i32* @GHJK 51*9880d681SAndroid Build Coastguard Worker br label %M 52*9880d681SAndroid Build Coastguard Worker 53*9880d681SAndroid Build Coastguard WorkerC: 54*9880d681SAndroid Build Coastguard Worker call void @dar(i32 2) 55*9880d681SAndroid Build Coastguard Worker store i32 0, i32* @GHJK 56*9880d681SAndroid Build Coastguard Worker br label %M 57*9880d681SAndroid Build Coastguard Worker 58*9880d681SAndroid Build Coastguard WorkerM: 59*9880d681SAndroid Build Coastguard Worker indirectbr i8* %c, [label %return, label %altret] 60*9880d681SAndroid Build Coastguard Worker 61*9880d681SAndroid Build Coastguard Workerreturn: 62*9880d681SAndroid Build Coastguard Worker call void @ear(i32 1000) 63*9880d681SAndroid Build Coastguard Worker ret void 64*9880d681SAndroid Build Coastguard Workeraltret: 65*9880d681SAndroid Build Coastguard Worker call void @far(i32 1001) 66*9880d681SAndroid Build Coastguard Worker ret void 67*9880d681SAndroid Build Coastguard Worker} 68