1 ; RUN: llc < %s -mtriple=i686-pc-win32 | FileCheck %s -check-prefix=WIN32
2 ; RUN: llc < %s -mtriple=i686-pc-mingw32 | FileCheck %s -check-prefix=MINGW_X86
3 ; RUN: llc < %s -mtriple=i386-pc-linux | FileCheck %s -check-prefix=LINUX
4 ; RUN: llc < %s -O0 -mtriple=i686-pc-win32 | FileCheck %s -check-prefix=WIN32
5 ; RUN: llc < %s -O0 -mtriple=i686-pc-mingw32 | FileCheck %s -check-prefix=MINGW_X86
6 ; RUN: llc < %s -O0 -mtriple=i386-pc-linux | FileCheck %s -check-prefix=LINUX
8 ; The SysV ABI used by most Unixes and Mingw on x86 specifies that an sret pointer
9 ; is callee-cleanup. However, in MSVC's cdecl calling convention, sret pointer
10 ; arguments are caller-cleanup like normal arguments.
12 define void @sret1(i8* sret %x) nounwind {
15 ; WIN32: movb $42, (%eax)
16 ; WIN32-NOT: popl %eax
25 store i8 42, i8* %x, align 4
29 define void @sret2(i8* sret %x, i8 %y) nounwind {
32 ; WIN32: movb {{.*}}, (%eax)
33 ; WIN32-NOT: popl %eax
46 define void @sret3(i8* sret %x, i8* %y) nounwind {
49 ; WIN32: movb $42, (%eax)
50 ; WIN32-NOT: movb $13, (%eax)
51 ; WIN32-NOT: popl %eax
66 %struct.S4 = type { i32, i32, i32 }
68 define void @sret4(%struct.S4* noalias sret %agg.result) {
71 ; WIN32: movl $42, (%eax)
72 ; WIN32-NOT: popl %eax
81 %x = getelementptr inbounds %struct.S4* %agg.result, i32 0, i32 0
82 store i32 42, i32* %x, align 4
86 %struct.S5 = type { i32 }
87 %class.C5 = type { i8 }
89 define x86_thiscallcc void @"\01?foo@C5@@QAE?AUS5@@XZ"(%struct.S5* noalias sret %agg.result, %class.C5* %this) {
91 %this.addr = alloca %class.C5*, align 4
92 store %class.C5* %this, %class.C5** %this.addr, align 4
93 %this1 = load %class.C5** %this.addr
94 %x = getelementptr inbounds %struct.S5* %agg.result, i32 0, i32 0
95 store i32 42, i32* %x, align 4
97 ; WIN32: {{^}}"?foo@C5@@QAE?AUS5@@XZ":
99 ; The address of the return structure is passed as an implicit parameter.
100 ; In the -O0 build, %eax is spilled at the beginning of the function, hence we
101 ; should match both 4(%esp) and 8(%esp).
102 ; WIN32: {{[48]}}(%esp), %eax
103 ; WIN32: movl $42, (%eax)
107 define void @call_foo5() {
109 %c = alloca %class.C5, align 1
110 %s = alloca %struct.S5, align 4
111 call x86_thiscallcc void @"\01?foo@C5@@QAE?AUS5@@XZ"(%struct.S5* sret %s, %class.C5* %c)
112 ; WIN32: {{^}}_call_foo5:
114 ; Load the address of the result and put it onto stack
115 ; (through %ecx in the -O0 build).
116 ; WIN32: leal {{[0-9]+}}(%esp), %eax
117 ; WIN32: movl %eax, (%e{{[sc][px]}})
119 ; The this pointer goes to ECX.
120 ; FIXME: for some reason, the below checks fail on the Ubuntu Atom D2700 bot.
121 ; FIXME-NEXT: leal {{[0-9]+}}(%esp), %ecx
122 ; FIXME-NEXT: calll "?foo@C5@@QAE?AUS5@@XZ"
124 ; WIN32: calll "?foo@C5@@QAE?AUS5@@XZ"