1; RUN: llc < %s -mtriple=x86_64-linux | FileCheck %s -check-prefix=X64
2; X64:      mov
3; X64-NEXT: movb %ah, (%rsi)
4; X64:      mov
5; X64-NEXT: movb %ah, (%rsi)
6; X64:      mov
7; X64-NEXT: movb %ah, (%rsi)
8; X64-NOT:      mov
9
10; RUN: llc < %s -mtriple=x86_64-win32 | FileCheck %s -check-prefix=W64
11; W64-NOT:      mov
12; W64:      movb %ch, (%rdx)
13; W64-NOT:      mov
14; W64:      movb %ch, (%rdx)
15; W64-NOT:      mov
16; W64:      movb %ch, (%rdx)
17; W64-NOT:      mov
18
19; RUN: llc < %s -march=x86 | FileCheck %s -check-prefix=X32
20; X32-NOT:      mov
21; X32:      movb %ah, (%e
22; X32-NOT:      mov
23; X32:      movb %ah, (%e
24; X32-NOT:      mov
25; X32:      movb %ah, (%e
26; X32-NOT:      mov
27
28; Use h-register extract and store.
29
30define void @foo16(i16 inreg %p, i8* inreg %z) nounwind {
31  %q = lshr i16 %p, 8
32  %t = trunc i16 %q to i8
33  store i8 %t, i8* %z
34  ret void
35}
36define void @foo32(i32 inreg %p, i8* inreg %z) nounwind {
37  %q = lshr i32 %p, 8
38  %t = trunc i32 %q to i8
39  store i8 %t, i8* %z
40  ret void
41}
42define void @foo64(i64 inreg %p, i8* inreg %z) nounwind {
43  %q = lshr i64 %p, 8
44  %t = trunc i64 %q to i8
45  store i8 %t, i8* %z
46  ret void
47}
48