1*9880d681SAndroid Build Coastguard Worker; RUN: llc -verify-machineinstrs -mtriple=armv7k-apple-ios8.0 -mcpu=cortex-a7 -o - %s | FileCheck --check-prefix=CHECK --check-prefix=OPT --check-prefix=TAILCALL %s 2*9880d681SAndroid Build Coastguard Worker; RUN: llc -O0 -verify-machineinstrs -mtriple=armv7k-apple-ios8.0 -mcpu=cortex-a7 -o - %s | FileCheck %s 3*9880d681SAndroid Build Coastguard Worker 4*9880d681SAndroid Build Coastguard Worker; RUN: llc -verify-machineinstrs -mtriple=armv7-apple-ios -o - %s | FileCheck --check-prefix=CHECK --check-prefix=OPT %s 5*9880d681SAndroid Build Coastguard Worker; RUN: llc -O0 -verify-machineinstrs -mtriple=armv7-apple-ios -o - %s | FileCheck %s 6*9880d681SAndroid Build Coastguard Worker 7*9880d681SAndroid Build Coastguard Worker; Parameter with swiftself should be allocated to r10. 8*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: swiftself_param: 9*9880d681SAndroid Build Coastguard Worker; CHECK: mov r0, r10 10*9880d681SAndroid Build Coastguard Workerdefine i8 *@swiftself_param(i8* swiftself %addr0) { 11*9880d681SAndroid Build Coastguard Worker ret i8 *%addr0 12*9880d681SAndroid Build Coastguard Worker} 13*9880d681SAndroid Build Coastguard Worker 14*9880d681SAndroid Build Coastguard Worker; Check that r10 is used to pass a swiftself argument. 15*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: call_swiftself: 16*9880d681SAndroid Build Coastguard Worker; CHECK: mov r10, r0 17*9880d681SAndroid Build Coastguard Worker; CHECK: bl {{_?}}swiftself_param 18*9880d681SAndroid Build Coastguard Workerdefine i8 *@call_swiftself(i8* %arg) { 19*9880d681SAndroid Build Coastguard Worker %res = call i8 *@swiftself_param(i8* swiftself %arg) 20*9880d681SAndroid Build Coastguard Worker ret i8 *%res 21*9880d681SAndroid Build Coastguard Worker} 22*9880d681SAndroid Build Coastguard Worker 23*9880d681SAndroid Build Coastguard Worker; r10 should be saved by the callee even if used for swiftself 24*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: swiftself_clobber: 25*9880d681SAndroid Build Coastguard Worker; CHECK: push {r10} 26*9880d681SAndroid Build Coastguard Worker; ... 27*9880d681SAndroid Build Coastguard Worker; CHECK: pop {r10} 28*9880d681SAndroid Build Coastguard Workerdefine i8 *@swiftself_clobber(i8* swiftself %addr0) { 29*9880d681SAndroid Build Coastguard Worker call void asm sideeffect "", "~{r10}"() 30*9880d681SAndroid Build Coastguard Worker ret i8 *%addr0 31*9880d681SAndroid Build Coastguard Worker} 32*9880d681SAndroid Build Coastguard Worker 33*9880d681SAndroid Build Coastguard Worker; Demonstrate that we do not need any movs when calling multiple functions 34*9880d681SAndroid Build Coastguard Worker; with swiftself argument. 35*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: swiftself_passthrough: 36*9880d681SAndroid Build Coastguard Worker; OPT-NOT: mov{{.*}}r10 37*9880d681SAndroid Build Coastguard Worker; OPT: bl {{_?}}swiftself_param 38*9880d681SAndroid Build Coastguard Worker; OPT-NOT: mov{{.*}}r10 39*9880d681SAndroid Build Coastguard Worker; OPT-NEXT: bl {{_?}}swiftself_param 40*9880d681SAndroid Build Coastguard Workerdefine void @swiftself_passthrough(i8* swiftself %addr0) { 41*9880d681SAndroid Build Coastguard Worker call i8 *@swiftself_param(i8* swiftself %addr0) 42*9880d681SAndroid Build Coastguard Worker call i8 *@swiftself_param(i8* swiftself %addr0) 43*9880d681SAndroid Build Coastguard Worker ret void 44*9880d681SAndroid Build Coastguard Worker} 45*9880d681SAndroid Build Coastguard Worker 46*9880d681SAndroid Build Coastguard Worker; We can use a tail call if the callee swiftself is the same as the caller one. 47*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: swiftself_tail: 48*9880d681SAndroid Build Coastguard Worker; TAILCALL: b {{_?}}swiftself_param 49*9880d681SAndroid Build Coastguard Worker; TAILCALL-NOT: pop 50*9880d681SAndroid Build Coastguard Workerdefine i8* @swiftself_tail(i8* swiftself %addr0) { 51*9880d681SAndroid Build Coastguard Worker call void asm sideeffect "", "~{r10}"() 52*9880d681SAndroid Build Coastguard Worker %res = tail call i8* @swiftself_param(i8* swiftself %addr0) 53*9880d681SAndroid Build Coastguard Worker ret i8* %res 54*9880d681SAndroid Build Coastguard Worker} 55*9880d681SAndroid Build Coastguard Worker 56*9880d681SAndroid Build Coastguard Worker; We can not use a tail call if the callee swiftself is not the same as the 57*9880d681SAndroid Build Coastguard Worker; caller one. 58*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: swiftself_notail: 59*9880d681SAndroid Build Coastguard Worker; CHECK: mov r10, r0 60*9880d681SAndroid Build Coastguard Worker; CHECK: bl {{_?}}swiftself_param 61*9880d681SAndroid Build Coastguard Worker; CHECK: pop 62*9880d681SAndroid Build Coastguard Workerdefine i8* @swiftself_notail(i8* swiftself %addr0, i8* %addr1) nounwind { 63*9880d681SAndroid Build Coastguard Worker %res = tail call i8* @swiftself_param(i8* swiftself %addr1) 64*9880d681SAndroid Build Coastguard Worker ret i8* %res 65*9880d681SAndroid Build Coastguard Worker} 66