xref: /llvm-project/llvm/test/CodeGen/RISCV/legalize-fneg.ll (revision 2967e5f8007d873a3e9d97870d2461d0827a3976)
1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2; RUN: llc -mtriple=riscv32 -verify-machineinstrs < %s \
3; RUN:   | FileCheck -check-prefix=RV32 %s
4; RUN: llc -mtriple=riscv64 -verify-machineinstrs < %s \
5; RUN:   | FileCheck -check-prefix=RV64 %s
6
7define void @test1(ptr %a, ptr %b) nounwind {
8; RV32-LABEL: test1:
9; RV32:       # %bb.0: # %entry
10; RV32-NEXT:    lw a1, 0(a1)
11; RV32-NEXT:    lui a2, 524288
12; RV32-NEXT:    xor a1, a1, a2
13; RV32-NEXT:    sw a1, 0(a0)
14; RV32-NEXT:    ret
15;
16; RV64-LABEL: test1:
17; RV64:       # %bb.0: # %entry
18; RV64-NEXT:    lw a1, 0(a1)
19; RV64-NEXT:    lui a2, 524288
20; RV64-NEXT:    xor a1, a1, a2
21; RV64-NEXT:    sw a1, 0(a0)
22; RV64-NEXT:    ret
23entry:
24  %0 = load float, ptr %b
25  %neg = fneg float %0
26  store float %neg, ptr %a
27  ret void
28}
29
30define void @test2(ptr %a, ptr %b) nounwind {
31; RV32-LABEL: test2:
32; RV32:       # %bb.0: # %entry
33; RV32-NEXT:    lw a2, 4(a1)
34; RV32-NEXT:    lw a1, 0(a1)
35; RV32-NEXT:    lui a3, 524288
36; RV32-NEXT:    xor a2, a2, a3
37; RV32-NEXT:    sw a1, 0(a0)
38; RV32-NEXT:    sw a2, 4(a0)
39; RV32-NEXT:    ret
40;
41; RV64-LABEL: test2:
42; RV64:       # %bb.0: # %entry
43; RV64-NEXT:    ld a1, 0(a1)
44; RV64-NEXT:    li a2, -1
45; RV64-NEXT:    slli a2, a2, 63
46; RV64-NEXT:    xor a1, a1, a2
47; RV64-NEXT:    sd a1, 0(a0)
48; RV64-NEXT:    ret
49entry:
50  %0 = load double, ptr %b
51  %neg = fneg double %0
52  store double %neg, ptr %a
53  ret void
54}
55
56define void @test3(ptr %a, ptr %b) nounwind {
57; RV32-LABEL: test3:
58; RV32:       # %bb.0: # %entry
59; RV32-NEXT:    lw a2, 12(a1)
60; RV32-NEXT:    lw a3, 0(a1)
61; RV32-NEXT:    lw a4, 4(a1)
62; RV32-NEXT:    lw a1, 8(a1)
63; RV32-NEXT:    lui a5, 524288
64; RV32-NEXT:    xor a2, a2, a5
65; RV32-NEXT:    sw a3, 0(a0)
66; RV32-NEXT:    sw a4, 4(a0)
67; RV32-NEXT:    sw a1, 8(a0)
68; RV32-NEXT:    sw a2, 12(a0)
69; RV32-NEXT:    ret
70;
71; RV64-LABEL: test3:
72; RV64:       # %bb.0: # %entry
73; RV64-NEXT:    ld a2, 8(a1)
74; RV64-NEXT:    ld a1, 0(a1)
75; RV64-NEXT:    li a3, -1
76; RV64-NEXT:    slli a3, a3, 63
77; RV64-NEXT:    xor a2, a2, a3
78; RV64-NEXT:    sd a1, 0(a0)
79; RV64-NEXT:    sd a2, 8(a0)
80; RV64-NEXT:    ret
81entry:
82  %0 = load fp128, ptr %b
83  %neg = fneg fp128 %0
84  store fp128 %neg, ptr %a
85  ret void
86}
87