xref: /llvm-project/llvm/test/CodeGen/LoongArch/ir-instruction/sub.ll (revision 718331f55529469586c99a55e4b382a1c7485842) 
1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2; RUN: llc --mtriple=loongarch32 -mattr=+d < %s | FileCheck %s --check-prefix=LA32
3; RUN: llc --mtriple=loongarch64 -mattr=+d < %s | FileCheck %s --check-prefix=LA64
4
5;; Exercise the 'sub' LLVM IR: https://llvm.org/docs/LangRef.html#sub-instruction
6
7define i1 @sub_i1(i1 %x, i1 %y) {
8; LA32-LABEL: sub_i1:
9; LA32:       # %bb.0:
10; LA32-NEXT:    sub.w $a0, $a0, $a1
11; LA32-NEXT:    ret
12;
13; LA64-LABEL: sub_i1:
14; LA64:       # %bb.0:
15; LA64-NEXT:    sub.d $a0, $a0, $a1
16; LA64-NEXT:    ret
17  %sub = sub i1 %x, %y
18  ret i1 %sub
19}
20
21define i8 @sub_i8(i8 %x, i8 %y) {
22; LA32-LABEL: sub_i8:
23; LA32:       # %bb.0:
24; LA32-NEXT:    sub.w $a0, $a0, $a1
25; LA32-NEXT:    ret
26;
27; LA64-LABEL: sub_i8:
28; LA64:       # %bb.0:
29; LA64-NEXT:    sub.d $a0, $a0, $a1
30; LA64-NEXT:    ret
31  %sub = sub i8 %x, %y
32  ret i8 %sub
33}
34
35define i16 @sub_i16(i16 %x, i16 %y) {
36; LA32-LABEL: sub_i16:
37; LA32:       # %bb.0:
38; LA32-NEXT:    sub.w $a0, $a0, $a1
39; LA32-NEXT:    ret
40;
41; LA64-LABEL: sub_i16:
42; LA64:       # %bb.0:
43; LA64-NEXT:    sub.d $a0, $a0, $a1
44; LA64-NEXT:    ret
45  %sub = sub i16 %x, %y
46  ret i16 %sub
47}
48
49define i32 @sub_i32(i32 %x, i32 %y) {
50; LA32-LABEL: sub_i32:
51; LA32:       # %bb.0:
52; LA32-NEXT:    sub.w $a0, $a0, $a1
53; LA32-NEXT:    ret
54;
55; LA64-LABEL: sub_i32:
56; LA64:       # %bb.0:
57; LA64-NEXT:    sub.w $a0, $a0, $a1
58; LA64-NEXT:    ret
59  %sub = sub i32 %x, %y
60  ret i32 %sub
61}
62
63;; Match the pattern:
64;; def : PatGprGpr_32<sub, SUB_W>;
65define signext i32 @sub_i32_sext(i32 %x, i32 %y) {
66; LA32-LABEL: sub_i32_sext:
67; LA32:       # %bb.0:
68; LA32-NEXT:    sub.w $a0, $a0, $a1
69; LA32-NEXT:    ret
70;
71; LA64-LABEL: sub_i32_sext:
72; LA64:       # %bb.0:
73; LA64-NEXT:    sub.w $a0, $a0, $a1
74; LA64-NEXT:    ret
75  %sub = sub i32 %x, %y
76  ret i32 %sub
77}
78
79define i64 @sub_i64(i64 %x, i64 %y) {
80; LA32-LABEL: sub_i64:
81; LA32:       # %bb.0:
82; LA32-NEXT:    sltu $a4, $a0, $a2
83; LA32-NEXT:    sub.w $a1, $a1, $a3
84; LA32-NEXT:    sub.w $a1, $a1, $a4
85; LA32-NEXT:    sub.w $a0, $a0, $a2
86; LA32-NEXT:    ret
87;
88; LA64-LABEL: sub_i64:
89; LA64:       # %bb.0:
90; LA64-NEXT:    sub.d $a0, $a0, $a1
91; LA64-NEXT:    ret
92  %sub = sub i64 %x, %y
93  ret i64 %sub
94}
95