xref: /llvm-project/llvm/test/CodeGen/X86/sibcall-win64.ll (revision 2f448bf509432c1a19ec46ab8cbc7353c03c6280) 
1; RUN: llc < %s -mtriple=x86_64-pc-linux | FileCheck %s
2
3declare dso_local win64cc void @win64_callee(i32)
4declare dso_local win64cc ptr @win64_indirect()
5declare dso_local win64cc void @win64_other(i32)
6declare dso_local void @sysv_callee(i32)
7declare dso_local ptr @sysv_indirect()
8declare dso_local void @sysv_other(i32)
9
10define void @sysv_caller(i32 %p1) {
11entry:
12  tail call win64cc void @win64_callee(i32 %p1)
13  ret void
14}
15
16; CHECK-LABEL: sysv_caller:
17; CHECK: subq $40, %rsp
18; CHECK: callq win64_callee
19; CHECK: addq $40, %rsp
20; CHECK: retq
21
22define win64cc void @win64_caller(i32 %p1) {
23entry:
24  tail call void @sysv_callee(i32 %p1)
25  ret void
26}
27
28; CHECK-LABEL: win64_caller:
29; CHECK: callq sysv_callee
30; CHECK: retq
31
32define void @sysv_matched(i32 %p1) {
33  tail call void @sysv_callee(i32 %p1)
34  ret void
35}
36
37; CHECK-LABEL: sysv_matched:
38; CHECK: jmp sysv_callee # TAILCALL
39
40define win64cc void @win64_matched(i32 %p1) {
41  tail call win64cc void @win64_callee(i32 %p1)
42  ret void
43}
44
45; CHECK-LABEL: win64_matched:
46; CHECK: jmp win64_callee # TAILCALL
47
48define win64cc void @win64_indirect_caller(i32 %p1) {
49  %1 = call win64cc ptr @win64_indirect()
50  call win64cc void @win64_other(i32 0)
51  tail call win64cc void %1(i32 %p1)
52  ret void
53}
54
55; CHECK-LABEL: win64_indirect_caller:
56; CHECK: jmpq *%{{rax|rcx|rdx|r8|r9|r11}} # TAILCALL
57
58define void @sysv_indirect_caller(i32 %p1) {
59  %1 = call ptr @sysv_indirect()
60  call void @sysv_other(i32 0)
61  tail call void %1(i32 %p1)
62  ret void
63}
64
65; CHECK-LABEL: sysv_indirect_caller:
66; CHECK: jmpq *%{{rax|rcx|rdx|rsi|rdi|r8|r9|r11}} # TAILCALL
67