| ; 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 |
| ; RUN: llc -O0 -verify-machineinstrs -mtriple=armv7k-apple-ios8.0 -mcpu=cortex-a7 -o - %s | FileCheck %s |
| |
| ; RUN: llc -verify-machineinstrs -mtriple=armv7-apple-ios -o - %s | FileCheck --check-prefix=CHECK --check-prefix=OPT %s |
| ; RUN: llc -O0 -verify-machineinstrs -mtriple=armv7-apple-ios -o - %s | FileCheck %s |
| |
| ; Parameter with swiftself should be allocated to r10. |
| ; CHECK-LABEL: swiftself_param: |
| ; CHECK: mov r0, r10 |
| define i8 *@swiftself_param(i8* swiftself %addr0) { |
| ret i8 *%addr0 |
| } |
| |
| ; Check that r10 is used to pass a swiftself argument. |
| ; CHECK-LABEL: call_swiftself: |
| ; CHECK: mov r10, r0 |
| ; CHECK: bl {{_?}}swiftself_param |
| define i8 *@call_swiftself(i8* %arg) { |
| %res = call i8 *@swiftself_param(i8* swiftself %arg) |
| ret i8 *%res |
| } |
| |
| ; r10 should be saved by the callee even if used for swiftself |
| ; CHECK-LABEL: swiftself_clobber: |
| ; CHECK: push {r10} |
| ; ... |
| ; CHECK: pop {r10} |
| define i8 *@swiftself_clobber(i8* swiftself %addr0) { |
| call void asm sideeffect "", "~{r10}"() |
| ret i8 *%addr0 |
| } |
| |
| ; Demonstrate that we do not need any movs when calling multiple functions |
| ; with swiftself argument. |
| ; CHECK-LABEL: swiftself_passthrough: |
| ; OPT-NOT: mov{{.*}}r10 |
| ; OPT: bl {{_?}}swiftself_param |
| ; OPT-NOT: mov{{.*}}r10 |
| ; OPT-NEXT: bl {{_?}}swiftself_param |
| define void @swiftself_passthrough(i8* swiftself %addr0) { |
| call i8 *@swiftself_param(i8* swiftself %addr0) |
| call i8 *@swiftself_param(i8* swiftself %addr0) |
| ret void |
| } |
| |
| ; We can use a tail call if the callee swiftself is the same as the caller one. |
| ; CHECK-LABEL: swiftself_tail: |
| ; TAILCALL: b {{_?}}swiftself_param |
| ; TAILCALL-NOT: pop |
| define i8* @swiftself_tail(i8* swiftself %addr0) { |
| call void asm sideeffect "", "~{r10}"() |
| %res = tail call i8* @swiftself_param(i8* swiftself %addr0) |
| ret i8* %res |
| } |
| |
| ; We can not use a tail call if the callee swiftself is not the same as the |
| ; caller one. |
| ; CHECK-LABEL: swiftself_notail: |
| ; CHECK: mov r10, r0 |
| ; CHECK: bl {{_?}}swiftself_param |
| ; CHECK: pop |
| define i8* @swiftself_notail(i8* swiftself %addr0, i8* %addr1) nounwind { |
| %res = tail call i8* @swiftself_param(i8* swiftself %addr1) |
| ret i8* %res |
| } |