mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-25 12:12:47 +01:00
64 lines
2.0 KiB
LLVM
64 lines
2.0 KiB
LLVM
|
; RUN: llc -verify-machineinstrs -mtriple=x86_64-unknown-windows-msvc -o - %s | FileCheck --check-prefix=CHECK --check-prefix=OPT %s
|
||
|
|
; RUN: llc -O0 -verify-machineinstrs -mtriple=x86_64-unknown-windows-msvc -o - %s | FileCheck %s
|
||
|
|
|
||
|
|
; Parameter with swiftself should be allocated to r13.
|
||
|
|
; CHECK-LABEL: swiftself_param:
|
||
|
|
; CHECK: movq %r13, %rax
|
||
|
|
define i8 *@swiftself_param(i8* swiftself %addr0) {
|
||
|
|
ret i8 *%addr0
|
||
|
|
}
|
||
|
|
|
||
|
|
; Check that r13 is used to pass a swiftself argument.
|
||
|
|
; CHECK-LABEL: call_swiftself:
|
||
|
|
; CHECK: movq %rcx, %r13
|
||
|
|
; CHECK: callq swiftself_param
|
||
|
|
define i8 *@call_swiftself(i8* %arg) {
|
||
|
|
%res = call i8 *@swiftself_param(i8* swiftself %arg)
|
||
|
|
ret i8 *%res
|
||
|
|
}
|
||
|
|
|
||
|
|
; r13 should be saved by the callee even if used for swiftself
|
||
|
|
; CHECK-LABEL: swiftself_clobber:
|
||
|
|
; CHECK: pushq %r13
|
||
|
|
; ...
|
||
|
|
; CHECK: popq %r13
|
||
|
|
define i8 *@swiftself_clobber(i8* swiftself %addr0) {
|
||
|
|
call void asm sideeffect "nop", "~{r13}"()
|
||
|
|
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{{.*}}r13
|
||
|
|
; OPT: callq swiftself_param
|
||
|
|
; OPT-NOT: mov{{.*}}r13
|
||
|
|
; OPT-NEXT: callq 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.
|
||
|
|
; This should also work with fast-isel.
|
||
|
|
; CHECK-LABEL: swiftself_tail:
|
||
|
|
; CHECK: jmp swiftself_param
|
||
|
|
; CHECK-NOT: ret
|
||
|
|
define i8* @swiftself_tail(i8* swiftself %addr0) {
|
||
|
|
call void asm sideeffect "", "~{r13}"()
|
||
|
|
%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: movq %rcx, %r13
|
||
|
|
; CHECK: callq swiftself_param
|
||
|
|
; CHECK: retq
|
||
|
|
define i8* @swiftself_notail(i8* swiftself %addr0, i8* %addr1) nounwind {
|
||
|
|
%res = tail call i8* @swiftself_param(i8* swiftself %addr1)
|
||
|
|
ret i8* %res
|
||
|
|
}
|