xref: /llvm-project/llvm/test/CodeGen/X86/promote-i16.ll (revision 2f448bf509432c1a19ec46ab8cbc7353c03c6280)
1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2; RUN: llc < %s -mtriple=i686-unknown-linux-gnu | FileCheck %s --check-prefix=X86
3; RUN: llc < %s -mtriple=x86_64-unknown-linux-gnu | FileCheck %s --check-prefix=X64
4
5define signext i16 @foo(i16 signext %x) nounwind {
6; X86-LABEL: foo:
7; X86:       # %bb.0: # %entry
8; X86-NEXT:    movl $21998, %eax # imm = 0x55EE
9; X86-NEXT:    xorl {{[0-9]+}}(%esp), %eax
10; X86-NEXT:    # kill: def $ax killed $ax killed $eax
11; X86-NEXT:    retl
12;
13; X64-LABEL: foo:
14; X64:       # %bb.0: # %entry
15; X64-NEXT:    movl %edi, %eax
16; X64-NEXT:    xorl $21998, %eax # imm = 0x55EE
17; X64-NEXT:    # kill: def $ax killed $ax killed $eax
18; X64-NEXT:    retq
19entry:
20  %0 = xor i16 %x, 21998
21  ret i16 %0
22}
23
24define signext i16 @bar(i16 signext %x) nounwind {
25; X86-LABEL: bar:
26; X86:       # %bb.0: # %entry
27; X86-NEXT:    movl $54766, %eax # imm = 0xD5EE
28; X86-NEXT:    xorl {{[0-9]+}}(%esp), %eax
29; X86-NEXT:    # kill: def $ax killed $ax killed $eax
30; X86-NEXT:    retl
31;
32; X64-LABEL: bar:
33; X64:       # %bb.0: # %entry
34; X64-NEXT:    movl %edi, %eax
35; X64-NEXT:    xorl $54766, %eax # imm = 0xD5EE
36; X64-NEXT:    # kill: def $ax killed $ax killed $eax
37; X64-NEXT:    retq
38entry:
39  %0 = xor i16 %x, 54766
40  ret i16 %0
41}
42
43define signext i16 @baz(ptr %x, i16 signext %y) nounwind {
44; X86-LABEL: baz:
45; X86:       # %bb.0: # %entry
46; X86-NEXT:    movl {{[0-9]+}}(%esp), %eax
47; X86-NEXT:    movzwl (%eax), %eax
48; X86-NEXT:    subw {{[0-9]+}}(%esp), %ax
49; X86-NEXT:    retl
50;
51; X64-LABEL: baz:
52; X64:       # %bb.0: # %entry
53; X64-NEXT:    movzwl (%rdi), %eax
54; X64-NEXT:    subl %esi, %eax
55; X64-NEXT:    # kill: def $ax killed $ax killed $eax
56; X64-NEXT:    retq
57entry:
58  %0 = load i16, ptr %x
59  %sub = sub i16 %0, %y
60  ret i16 %sub
61}
62
63define void @bat(ptr %a, ptr %x, i16 signext %y) nounwind {
64; X86-LABEL: bat:
65; X86:       # %bb.0: # %entry
66; X86-NEXT:    movl {{[0-9]+}}(%esp), %eax
67; X86-NEXT:    movl {{[0-9]+}}(%esp), %ecx
68; X86-NEXT:    movzwl (%ecx), %ecx
69; X86-NEXT:    subw {{[0-9]+}}(%esp), %cx
70; X86-NEXT:    movw %cx, (%eax)
71; X86-NEXT:    retl
72;
73; X64-LABEL: bat:
74; X64:       # %bb.0: # %entry
75; X64-NEXT:    movzwl (%rsi), %eax
76; X64-NEXT:    subl %edx, %eax
77; X64-NEXT:    movw %ax, (%rdi)
78; X64-NEXT:    retq
79entry:
80  %0 = load i16, ptr %x
81  %sub = sub i16 %0, %y
82  store i16 %sub, ptr %a
83  ret void
84}
85