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 10define 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 18define 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} 28define 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 40define 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 50define 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 62define 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