1*9880d681SAndroid Build Coastguard Worker; RUN: llc < %s -march=x86 -tailcallopt | FileCheck %s 2*9880d681SAndroid Build Coastguard Worker 3*9880d681SAndroid Build Coastguard Workerdeclare i32 @putchar(i32) 4*9880d681SAndroid Build Coastguard Worker 5*9880d681SAndroid Build Coastguard Workerdefine fastcc i32 @checktail(i32 %x, i32* %f, i32 %g) nounwind { 6*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: checktail: 7*9880d681SAndroid Build Coastguard Worker %tmp1 = icmp sgt i32 %x, 0 8*9880d681SAndroid Build Coastguard Worker br i1 %tmp1, label %if-then, label %if-else 9*9880d681SAndroid Build Coastguard Worker 10*9880d681SAndroid Build Coastguard Workerif-then: 11*9880d681SAndroid Build Coastguard Worker %fun_ptr = bitcast i32* %f to i32(i32, i32*, i32)* 12*9880d681SAndroid Build Coastguard Worker %arg1 = add i32 %x, -1 13*9880d681SAndroid Build Coastguard Worker call i32 @putchar(i32 90) 14*9880d681SAndroid Build Coastguard Worker; CHECK: jmpl *%e{{.*}} 15*9880d681SAndroid Build Coastguard Worker %res = tail call fastcc i32 %fun_ptr( i32 %arg1, i32 * %f, i32 %g) 16*9880d681SAndroid Build Coastguard Worker ret i32 %res 17*9880d681SAndroid Build Coastguard Worker 18*9880d681SAndroid Build Coastguard Workerif-else: 19*9880d681SAndroid Build Coastguard Worker ret i32 %x 20*9880d681SAndroid Build Coastguard Worker} 21*9880d681SAndroid Build Coastguard Worker 22*9880d681SAndroid Build Coastguard Worker 23*9880d681SAndroid Build Coastguard Workerdefine i32 @main() nounwind { 24*9880d681SAndroid Build Coastguard Worker %f = bitcast i32 (i32, i32*, i32)* @checktail to i32* 25*9880d681SAndroid Build Coastguard Worker %res = tail call fastcc i32 @checktail( i32 10, i32* %f,i32 10) 26*9880d681SAndroid Build Coastguard Worker ret i32 %res 27*9880d681SAndroid Build Coastguard Worker} 28