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