xref: /llvm-project/llvm/test/CodeGen/X86/tailcall-mem-intrinsics.ll (revision 2f448bf509432c1a19ec46ab8cbc7353c03c6280) 
1; RUN: llc -mtriple=x86_64-unknown-unknown < %s | FileCheck %s
2
3; CHECK-LABEL: tail_memcpy
4; CHECK: jmp memcpy
5define void @tail_memcpy(ptr nocapture %p, ptr nocapture readonly %q, i32 %n) #0 {
6entry:
7  tail call void @llvm.memcpy.p0.p0.i32(ptr %p, ptr %q, i32 %n, i1 false)
8  ret void
9}
10
11; CHECK-LABEL: tail_memmove
12; CHECK: jmp memmove
13define void @tail_memmove(ptr nocapture %p, ptr nocapture readonly %q, i32 %n) #0 {
14entry:
15  tail call void @llvm.memmove.p0.p0.i32(ptr %p, ptr %q, i32 %n, i1 false)
16  ret void
17}
18
19; CHECK-LABEL: tail_memset
20; CHECK: jmp memset
21define void @tail_memset(ptr nocapture %p, i8 %c, i32 %n) #0 {
22entry:
23  tail call void @llvm.memset.p0.i32(ptr %p, i8 %c, i32 %n, i1 false)
24  ret void
25}
26
27; CHECK-LABEL: tail_memcpy_ret
28; CHECK: jmp memcpy
29define ptr @tail_memcpy_ret(ptr nocapture %p, ptr nocapture readonly %q, i32 %n) #0 {
30entry:
31  tail call void @llvm.memcpy.p0.p0.i32(ptr %p, ptr %q, i32 %n, i1 false)
32  ret ptr %p
33}
34
35; CHECK-LABEL: tail_memmove_ret
36; CHECK: jmp memmove
37define ptr @tail_memmove_ret(ptr nocapture %p, ptr nocapture readonly %q, i32 %n) #0 {
38entry:
39  tail call void @llvm.memmove.p0.p0.i32(ptr %p, ptr %q, i32 %n, i1 false)
40  ret ptr %p
41}
42
43; CHECK-LABEL: tail_memset_ret
44; CHECK: jmp memset
45define ptr @tail_memset_ret(ptr nocapture %p, i8 %c, i32 %n) #0 {
46entry:
47  tail call void @llvm.memset.p0.i32(ptr %p, i8 %c, i32 %n, i1 false)
48  ret ptr %p
49}
50
51declare void @llvm.memcpy.p0.p0.i32(ptr nocapture, ptr nocapture readonly, i32, i1) #0
52declare void @llvm.memmove.p0.p0.i32(ptr nocapture, ptr nocapture readonly, i32, i1) #0
53declare void @llvm.memset.p0.i32(ptr nocapture, i8, i32, i1) #0
54
55attributes #0 = { nounwind }
56