1 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2 ; RUN: llc -mtriple=riscv64 -mattr=+m -verify-machineinstrs < %s \
3 ; RUN: | FileCheck -check-prefixes=NO-PREFER-W-INST %s
4 ; RUN: llc -mtriple=riscv64 -mattr=+m -riscv-disable-strip-w-suffix -verify-machineinstrs < %s \
5 ; RUN: | FileCheck -check-prefixes=NO-STRIP %s
6 ; RUN: llc -mtriple=riscv64 -mattr=+m,+prefer-w-inst -verify-machineinstrs < %s \
7 ; RUN: | FileCheck -check-prefixes=PREFER-W-INST %s
9 define i32 @addiw(i32 %a) {
10 ; NO-PREFER-W-INST-LABEL: addiw:
11 ; NO-PREFER-W-INST: # %bb.0:
12 ; NO-PREFER-W-INST-NEXT: lui a1, 1
13 ; NO-PREFER-W-INST-NEXT: addi a1, a1, -1
14 ; NO-PREFER-W-INST-NEXT: addw a0, a0, a1
15 ; NO-PREFER-W-INST-NEXT: ret
17 ; NO-STRIP-LABEL: addiw:
19 ; NO-STRIP-NEXT: lui a1, 1
20 ; NO-STRIP-NEXT: addiw a1, a1, -1
21 ; NO-STRIP-NEXT: addw a0, a0, a1
24 ; PREFER-W-INST-LABEL: addiw:
25 ; PREFER-W-INST: # %bb.0:
26 ; PREFER-W-INST-NEXT: lui a1, 1
27 ; PREFER-W-INST-NEXT: addiw a1, a1, -1
28 ; PREFER-W-INST-NEXT: addw a0, a0, a1
29 ; PREFER-W-INST-NEXT: ret
30 %ret = add i32 %a, 4095
34 define i32 @addw(i32 %a, i32 %b) {
35 ; NO-PREFER-W-INST-LABEL: addw:
36 ; NO-PREFER-W-INST: # %bb.0:
37 ; NO-PREFER-W-INST-NEXT: add a0, a0, a1
38 ; NO-PREFER-W-INST-NEXT: addiw a0, a0, 1024
39 ; NO-PREFER-W-INST-NEXT: ret
41 ; NO-STRIP-LABEL: addw:
43 ; NO-STRIP-NEXT: addw a0, a0, a1
44 ; NO-STRIP-NEXT: addiw a0, a0, 1024
47 ; PREFER-W-INST-LABEL: addw:
48 ; PREFER-W-INST: # %bb.0:
49 ; PREFER-W-INST-NEXT: addw a0, a0, a1
50 ; PREFER-W-INST-NEXT: addiw a0, a0, 1024
51 ; PREFER-W-INST-NEXT: ret
53 %ret = add i32 %add, 1024
57 define i32 @mulw(i32 %a, i32 %b) {
58 ; NO-PREFER-W-INST-LABEL: mulw:
59 ; NO-PREFER-W-INST: # %bb.0:
60 ; NO-PREFER-W-INST-NEXT: mul a1, a0, a1
61 ; NO-PREFER-W-INST-NEXT: mul a0, a0, a1
62 ; NO-PREFER-W-INST-NEXT: addiw a0, a0, 1024
63 ; NO-PREFER-W-INST-NEXT: ret
65 ; NO-STRIP-LABEL: mulw:
67 ; NO-STRIP-NEXT: mulw a1, a0, a1
68 ; NO-STRIP-NEXT: mulw a0, a0, a1
69 ; NO-STRIP-NEXT: addiw a0, a0, 1024
72 ; PREFER-W-INST-LABEL: mulw:
73 ; PREFER-W-INST: # %bb.0:
74 ; PREFER-W-INST-NEXT: mulw a1, a0, a1
75 ; PREFER-W-INST-NEXT: mulw a0, a0, a1
76 ; PREFER-W-INST-NEXT: addiw a0, a0, 1024
77 ; PREFER-W-INST-NEXT: ret
78 %mul1 = mul i32 %a, %b
79 %mul = mul i32 %a, %mul1
80 %ret = add i32 %mul, 1024
84 define i32 @slliw(i32 %a) {
85 ; NO-PREFER-W-INST-LABEL: slliw:
86 ; NO-PREFER-W-INST: # %bb.0:
87 ; NO-PREFER-W-INST-NEXT: slli a0, a0, 1
88 ; NO-PREFER-W-INST-NEXT: addiw a0, a0, 1024
89 ; NO-PREFER-W-INST-NEXT: ret
91 ; NO-STRIP-LABEL: slliw:
93 ; NO-STRIP-NEXT: slliw a0, a0, 1
94 ; NO-STRIP-NEXT: addiw a0, a0, 1024
97 ; PREFER-W-INST-LABEL: slliw:
98 ; PREFER-W-INST: # %bb.0:
99 ; PREFER-W-INST-NEXT: slliw a0, a0, 1
100 ; PREFER-W-INST-NEXT: addiw a0, a0, 1024
101 ; PREFER-W-INST-NEXT: ret
103 %ret = add i32 %shl, 1024