|
120
|
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) "no-frame-pointer-elim"="true" {
|
|
|
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) "no-frame-pointer-elim"="true" {
|
|
|
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) "no-frame-pointer-elim"="true" {
|
|
|
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) "no-frame-pointer-elim"="true" {
|
|
|
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) "no-frame-pointer-elim"="true" {
|
|
|
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 "no-frame-pointer-elim"="true" {
|
|
|
63 %res = tail call i8* @swiftself_param(i8* swiftself %addr1)
|
|
|
64 ret i8* %res
|
|
|
65 }
|
|
121
|
66
|
|
|
67 ; We cannot pretend that 'r0' is alive across the thisreturn_attribute call as
|
|
|
68 ; we normally would. We marked the first parameter with swiftself which means it
|
|
|
69 ; will no longer be passed in r0.
|
|
|
70 declare swiftcc i8* @thisreturn_attribute(i8* returned swiftself)
|
|
|
71 ; OPT-LABEL: swiftself_nothisreturn:
|
|
|
72 ; OPT-DAG: mov [[CSREG:r[1-9].*]], r0
|
|
|
73 ; OPT-DAG: ldr r10, [r10]
|
|
|
74 ; OPT: bl {{_?}}thisreturn_attribute
|
|
|
75 ; OPT: str r0, {{\[}}[[CSREG]]
|
|
|
76 define hidden swiftcc void @swiftself_nothisreturn(i8** noalias nocapture sret, i8** noalias nocapture readonly swiftself) {
|
|
|
77 entry:
|
|
|
78 %2 = load i8*, i8** %1, align 8
|
|
|
79 %3 = tail call swiftcc i8* @thisreturn_attribute(i8* swiftself %2)
|
|
|
80 store i8* %3, i8** %0, align 8
|
|
|
81 ret void
|
|
|
82 }
|
