1 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2 ; RUN: llc < %s -mtriple=x86_64-unknown-unknown | FileCheck %s --check-prefixes=ANY,STRICT
3 ; RUN: llc < %s -mtriple=x86_64-unknown-unknown -enable-unsafe-fp-math | FileCheck %s --check-prefixes=ANY,UNSAFE
5 define float @fadd_zero(float %x) {
6 ; STRICT-LABEL: fadd_zero:
8 ; STRICT-NEXT: xorps %xmm1, %xmm1
9 ; STRICT-NEXT: addss %xmm1, %xmm0
12 ; UNSAFE-LABEL: fadd_zero:
15 %r = fadd float %x, 0.0
19 define float @fadd_negzero(float %x) {
20 ; ANY-LABEL: fadd_negzero:
23 %r = fadd float %x, -0.0
27 define float @fadd_produce_zero(float %x) {
28 ; ANY-LABEL: fadd_produce_zero:
30 ; ANY-NEXT: xorps %xmm0, %xmm0
32 %neg = fsub nsz float 0.0, %x
33 %r = fadd nnan float %neg, %x
37 define float @fadd_reassociate(float %x) {
38 ; ANY-LABEL: fadd_reassociate:
40 ; ANY-NEXT: addss {{.*}}(%rip), %xmm0
42 %sum = fadd float %x, 8.0
43 %r = fadd reassoc nsz float %sum, 12.0
47 define float @fadd_negzero_nsz(float %x) {
48 ; ANY-LABEL: fadd_negzero_nsz:
51 %r = fadd nsz float %x, -0.0
55 define float @fadd_zero_nsz(float %x) {
56 ; ANY-LABEL: fadd_zero_nsz:
59 %r = fadd nsz float %x, 0.0
63 define float @fsub_zero(float %x) {
64 ; ANY-LABEL: fsub_zero:
67 %r = fsub float %x, 0.0
71 define float @fsub_self(float %x) {
72 ; ANY-LABEL: fsub_self:
74 ; ANY-NEXT: xorps %xmm0, %xmm0
76 %r = fsub nnan float %x, %x
80 define float @fsub_neg_x_y(float %x, float %y) {
81 ; ANY-LABEL: fsub_neg_x_y:
83 ; ANY-NEXT: subss %xmm0, %xmm1
84 ; ANY-NEXT: movaps %xmm1, %xmm0
86 %neg = fsub nsz float 0.0, %x
87 %r = fadd nsz float %neg, %y
91 define float @fsub_neg_y(float %x, float %y) {
92 ; UNSAFE-LABEL: fsub_neg_y:
94 ; UNSAFE-NEXT: mulss {{.*}}(%rip), %xmm0
95 ; UNSAFE-NEXT: subss %xmm1, %xmm0
96 ; UNSAFE-NEXT: addss %xmm1, %xmm0
98 %mul = fmul float %x, 5.000000e+00
99 %add = fadd float %mul, %y
100 %r = fsub nsz reassoc float %y, %add
104 define float @fsub_negzero(float %x) {
105 ; STRICT-LABEL: fsub_negzero:
107 ; STRICT-NEXT: xorps %xmm1, %xmm1
108 ; STRICT-NEXT: addss %xmm1, %xmm0
111 ; UNSAFE-LABEL: fsub_negzero:
114 %r = fsub float %x, -0.0
118 define float @fsub_zero_nsz_1(float %x) {
119 ; ANY-LABEL: fsub_zero_nsz_1:
122 %r = fsub nsz float %x, 0.0
126 define float @fsub_zero_nsz_2(float %x) {
127 ; ANY-LABEL: fsub_zero_nsz_2:
129 ; ANY-NEXT: xorps {{.*}}(%rip), %xmm0
131 %r = fsub nsz float 0.0, %x
135 define float @fsub_negzero_nsz(float %x) {
136 ; ANY-LABEL: fsub_negzero_nsz:
139 %r = fsub nsz float %x, -0.0
143 define float @fmul_zero(float %x) {
144 ; ANY-LABEL: fmul_zero:
146 ; ANY-NEXT: xorps %xmm0, %xmm0
148 %r = fmul nnan nsz float %x, 0.0
152 define float @fmul_one(float %x) {
153 ; ANY-LABEL: fmul_one:
156 %r = fmul float %x, 1.0
160 define float @fmul_x_const_const(float %x) {
161 ; ANY-LABEL: fmul_x_const_const:
163 ; ANY-NEXT: mulss {{.*}}(%rip), %xmm0
165 %mul = fmul reassoc float %x, 9.0
166 %r = fmul reassoc float %mul, 4.0