83 lines
3.1 KiB
LLVM
83 lines
3.1 KiB
LLVM
; 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) "frame-pointer"="all" {
|
|
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) "frame-pointer"="all" {
|
|
%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) "frame-pointer"="all" {
|
|
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) "frame-pointer"="all" {
|
|
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) "frame-pointer"="all" {
|
|
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 "frame-pointer"="all" {
|
|
%res = tail call i8* @swiftself_param(i8* swiftself %addr1)
|
|
ret i8* %res
|
|
}
|
|
|
|
; We cannot pretend that 'r0' is alive across the thisreturn_attribute call as
|
|
; we normally would. We marked the first parameter with swiftself which means it
|
|
; will no longer be passed in r0.
|
|
declare swiftcc i8* @thisreturn_attribute(i8* returned swiftself)
|
|
; OPT-LABEL: swiftself_nothisreturn:
|
|
; OPT-DAG: mov [[CSREG:r[1-9].*]], r0
|
|
; OPT-DAG: ldr r10, [r10]
|
|
; OPT: bl {{_?}}thisreturn_attribute
|
|
; OPT: str r0, [[[CSREG]]
|
|
define hidden swiftcc void @swiftself_nothisreturn(i8** noalias nocapture sret(i8**), i8** noalias nocapture readonly swiftself) {
|
|
entry:
|
|
%2 = load i8*, i8** %1, align 8
|
|
%3 = tail call swiftcc i8* @thisreturn_attribute(i8* swiftself %2)
|
|
store i8* %3, i8** %0, align 8
|
|
ret void
|
|
}
|