1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2 ; RUN: opt -S -instcombine < %s | FileCheck %s
4 declare float @llvm.maxnum.f32(float, float)
5 declare <2 x float> @llvm.maxnum.v2f32(<2 x float>, <2 x float>)
6 declare <4 x float> @llvm.maxnum.v4f32(<4 x float>, <4 x float>)
8 declare double @llvm.maxnum.f64(double, double)
9 declare <2 x double> @llvm.maxnum.v2f64(<2 x double>, <2 x double>)
11 define float @constant_fold_maxnum_f32() {
12 ; CHECK-LABEL: @constant_fold_maxnum_f32(
13 ; CHECK-NEXT: ret float 2.000000e+00
15 %x = call float @llvm.maxnum.f32(float 1.0, float 2.0)
19 define float @constant_fold_maxnum_f32_inv() {
20 ; CHECK-LABEL: @constant_fold_maxnum_f32_inv(
21 ; CHECK-NEXT: ret float 2.000000e+00
23 %x = call float @llvm.maxnum.f32(float 2.0, float 1.0)
27 define float @constant_fold_maxnum_f32_nan0() {
28 ; CHECK-LABEL: @constant_fold_maxnum_f32_nan0(
29 ; CHECK-NEXT: ret float 2.000000e+00
31 %x = call float @llvm.maxnum.f32(float 0x7FF8000000000000, float 2.0)
35 define float @constant_fold_maxnum_f32_nan1() {
36 ; CHECK-LABEL: @constant_fold_maxnum_f32_nan1(
37 ; CHECK-NEXT: ret float 2.000000e+00
39 %x = call float @llvm.maxnum.f32(float 2.0, float 0x7FF8000000000000)
43 define float @constant_fold_maxnum_f32_nan_nan() {
44 ; CHECK-LABEL: @constant_fold_maxnum_f32_nan_nan(
45 ; CHECK-NEXT: ret float 0x7FF8000000000000
47 %x = call float @llvm.maxnum.f32(float 0x7FF8000000000000, float 0x7FF8000000000000)
51 define float @constant_fold_maxnum_f32_p0_p0() {
52 ; CHECK-LABEL: @constant_fold_maxnum_f32_p0_p0(
53 ; CHECK-NEXT: ret float 0.000000e+00
55 %x = call float @llvm.maxnum.f32(float 0.0, float 0.0)
59 define float @constant_fold_maxnum_f32_p0_n0() {
60 ; CHECK-LABEL: @constant_fold_maxnum_f32_p0_n0(
61 ; CHECK-NEXT: ret float 0.000000e+00
63 %x = call float @llvm.maxnum.f32(float 0.0, float -0.0)
67 define float @constant_fold_maxnum_f32_n0_p0() {
68 ; CHECK-LABEL: @constant_fold_maxnum_f32_n0_p0(
69 ; CHECK-NEXT: ret float -0.000000e+00
71 %x = call float @llvm.maxnum.f32(float -0.0, float 0.0)
75 define float @constant_fold_maxnum_f32_n0_n0() {
76 ; CHECK-LABEL: @constant_fold_maxnum_f32_n0_n0(
77 ; CHECK-NEXT: ret float -0.000000e+00
79 %x = call float @llvm.maxnum.f32(float -0.0, float -0.0)
83 define <4 x float> @constant_fold_maxnum_v4f32() {
84 ; CHECK-LABEL: @constant_fold_maxnum_v4f32(
85 ; CHECK-NEXT: ret <4 x float> <float 2.000000e+00, float 8.000000e+00, float 1.000000e+01, float 9.000000e+00>
87 %x = call <4 x float> @llvm.maxnum.v4f32(<4 x float> <float 1.0, float 8.0, float 3.0, float 9.0>, <4 x float> <float 2.0, float 2.0, float 10.0, float 5.0>)
91 define double @constant_fold_maxnum_f64() {
92 ; CHECK-LABEL: @constant_fold_maxnum_f64(
93 ; CHECK-NEXT: ret double 2.000000e+00
95 %x = call double @llvm.maxnum.f64(double 1.0, double 2.0)
99 define double @constant_fold_maxnum_f64_nan0() {
100 ; CHECK-LABEL: @constant_fold_maxnum_f64_nan0(
101 ; CHECK-NEXT: ret double 2.000000e+00
103 %x = call double @llvm.maxnum.f64(double 0x7FF8000000000000, double 2.0)
107 define double @constant_fold_maxnum_f64_nan1() {
108 ; CHECK-LABEL: @constant_fold_maxnum_f64_nan1(
109 ; CHECK-NEXT: ret double 2.000000e+00
111 %x = call double @llvm.maxnum.f64(double 2.0, double 0x7FF8000000000000)
115 define double @constant_fold_maxnum_f64_nan_nan() {
116 ; CHECK-LABEL: @constant_fold_maxnum_f64_nan_nan(
117 ; CHECK-NEXT: ret double 0x7FF8000000000000
119 %x = call double @llvm.maxnum.f64(double 0x7FF8000000000000, double 0x7FF8000000000000)
123 define float @canonicalize_constant_maxnum_f32(float %x) {
124 ; CHECK-LABEL: @canonicalize_constant_maxnum_f32(
125 ; CHECK-NEXT: [[Y:%.*]] = call float @llvm.maxnum.f32(float [[X:%.*]], float 1.000000e+00)
126 ; CHECK-NEXT: ret float [[Y]]
128 %y = call float @llvm.maxnum.f32(float 1.0, float %x)
132 define float @maxnum_f32_nan_val(float %x) {
133 ; CHECK-LABEL: @maxnum_f32_nan_val(
134 ; CHECK-NEXT: ret float [[X:%.*]]
136 %y = call float @llvm.maxnum.f32(float 0x7FF8000000000000, float %x)
140 define float @maxnum_f32_val_nan(float %x) {
141 ; CHECK-LABEL: @maxnum_f32_val_nan(
142 ; CHECK-NEXT: ret float [[X:%.*]]
144 %y = call float @llvm.maxnum.f32(float %x, float 0x7FF8000000000000)
148 define float @fold_maxnum_f32_undef_undef(float %x) {
149 ; CHECK-LABEL: @fold_maxnum_f32_undef_undef(
150 ; CHECK-NEXT: ret float undef
152 %val = call float @llvm.maxnum.f32(float undef, float undef)
156 define float @maxnum_x_maxnum_x_y(float %x, float %y) {
157 ; CHECK-LABEL: @maxnum_x_maxnum_x_y(
158 ; CHECK-NEXT: [[A:%.*]] = call float @llvm.maxnum.f32(float [[X:%.*]], float [[Y:%.*]])
159 ; CHECK-NEXT: ret float [[A]]
161 %a = call float @llvm.maxnum.f32(float %x, float %y)
162 %b = call float @llvm.maxnum.f32(float %x, float %a)
166 define float @maxnum_y_maxnum_x_y(float %x, float %y) {
167 ; CHECK-LABEL: @maxnum_y_maxnum_x_y(
168 ; CHECK-NEXT: [[A:%.*]] = call float @llvm.maxnum.f32(float [[X:%.*]], float [[Y:%.*]])
169 ; CHECK-NEXT: ret float [[A]]
171 %a = call float @llvm.maxnum.f32(float %x, float %y)
172 %b = call float @llvm.maxnum.f32(float %y, float %a)
176 define float @maxnum_z_maxnum_x_y(float %x, float %y, float %z) {
177 ; CHECK-LABEL: @maxnum_z_maxnum_x_y(
178 ; CHECK-NEXT: [[A:%.*]] = call float @llvm.maxnum.f32(float [[X:%.*]], float [[Y:%.*]])
179 ; CHECK-NEXT: [[B:%.*]] = call float @llvm.maxnum.f32(float [[Z:%.*]], float [[A]])
180 ; CHECK-NEXT: ret float [[B]]
182 %a = call float @llvm.maxnum.f32(float %x, float %y)
183 %b = call float @llvm.maxnum.f32(float %z, float %a)
187 define float @maxnum_maxnum_x_y_z(float %x, float %y, float %z) {
188 ; CHECK-LABEL: @maxnum_maxnum_x_y_z(
189 ; CHECK-NEXT: [[A:%.*]] = call float @llvm.maxnum.f32(float [[X:%.*]], float [[Y:%.*]])
190 ; CHECK-NEXT: [[B:%.*]] = call float @llvm.maxnum.f32(float [[A]], float [[Z:%.*]])
191 ; CHECK-NEXT: ret float [[B]]
193 %a = call float @llvm.maxnum.f32(float %x, float %y)
194 %b = call float @llvm.maxnum.f32(float %a, float %z)
198 define float @maxnum4(float %x, float %y, float %z, float %w) {
199 ; CHECK-LABEL: @maxnum4(
200 ; CHECK-NEXT: [[A:%.*]] = call float @llvm.maxnum.f32(float [[X:%.*]], float [[Y:%.*]])
201 ; CHECK-NEXT: [[B:%.*]] = call float @llvm.maxnum.f32(float [[Z:%.*]], float [[W:%.*]])
202 ; CHECK-NEXT: [[C:%.*]] = call float @llvm.maxnum.f32(float [[A]], float [[B]])
203 ; CHECK-NEXT: ret float [[C]]
205 %a = call float @llvm.maxnum.f32(float %x, float %y)
206 %b = call float @llvm.maxnum.f32(float %z, float %w)
207 %c = call float @llvm.maxnum.f32(float %a, float %b)
211 define float @fold_maxnum_f32_inf_val(float %x) {
212 ; CHECK-LABEL: @fold_maxnum_f32_inf_val(
213 ; CHECK-NEXT: ret float 0x7FF0000000000000
215 %val = call float @llvm.maxnum.f32(float 0x7FF0000000000000, float %x)
219 define float @fold_maxnum_f32_neginf_val(float %x) {
220 ; CHECK-LABEL: @fold_maxnum_f32_neginf_val(
221 ; CHECK-NEXT: [[VAL:%.*]] = call float @llvm.maxnum.f32(float [[X:%.*]], float 0xFFF0000000000000)
222 ; CHECK-NEXT: ret float [[VAL]]
224 %val = call float @llvm.maxnum.f32(float 0xFFF0000000000000, float %x)
228 ; PR37404 - https://bugs.llvm.org/show_bug.cgi?id=37404
230 define <2 x float> @neg_neg(<2 x float> %x, <2 x float> %y) {
231 ; CHECK-LABEL: @neg_neg(
232 ; CHECK-NEXT: [[TMP1:%.*]] = call <2 x float> @llvm.minnum.v2f32(<2 x float> [[X:%.*]], <2 x float> [[Y:%.*]])
233 ; CHECK-NEXT: [[R:%.*]] = fsub <2 x float> <float -0.000000e+00, float -0.000000e+00>, [[TMP1]]
234 ; CHECK-NEXT: ret <2 x float> [[R]]
236 %negx = fsub <2 x float> <float -0.0, float -0.0>, %x
237 %negy = fsub <2 x float> <float -0.0, float -0.0>, %y
238 %r = call <2 x float> @llvm.maxnum.v2f32(<2 x float> %negx, <2 x float> %negy)
242 ; FMF is not required, but it should be propagated from the intrinsic (not the fnegs).
244 define float @neg_neg_vec_fmf(float %x, float %y) {
245 ; CHECK-LABEL: @neg_neg_vec_fmf(
246 ; CHECK-NEXT: [[TMP1:%.*]] = call fast float @llvm.minnum.f32(float [[X:%.*]], float [[Y:%.*]])
247 ; CHECK-NEXT: [[R:%.*]] = fsub fast float -0.000000e+00, [[TMP1]]
248 ; CHECK-NEXT: ret float [[R]]
250 %negx = fsub arcp float -0.0, %x
251 %negy = fsub afn float -0.0, %y
252 %r = call fast float @llvm.maxnum.f32(float %negx, float %negy)
256 ; 1 extra use of an intermediate value should still allow the fold,
257 ; but 2 would require more instructions than we started with.
259 declare void @use(float)
260 define float @neg_neg_extra_use_x(float %x, float %y) {
261 ; CHECK-LABEL: @neg_neg_extra_use_x(
262 ; CHECK-NEXT: [[NEGX:%.*]] = fsub float -0.000000e+00, [[X:%.*]]
263 ; CHECK-NEXT: [[TMP1:%.*]] = call float @llvm.minnum.f32(float [[X]], float [[Y:%.*]])
264 ; CHECK-NEXT: [[R:%.*]] = fsub float -0.000000e+00, [[TMP1]]
265 ; CHECK-NEXT: call void @use(float [[NEGX]])
266 ; CHECK-NEXT: ret float [[R]]
268 %negx = fsub float -0.0, %x
269 %negy = fsub float -0.0, %y
270 %r = call float @llvm.maxnum.f32(float %negx, float %negy)
271 call void @use(float %negx)
275 define float @neg_neg_extra_use_y(float %x, float %y) {
276 ; CHECK-LABEL: @neg_neg_extra_use_y(
277 ; CHECK-NEXT: [[NEGY:%.*]] = fsub float -0.000000e+00, [[Y:%.*]]
278 ; CHECK-NEXT: [[TMP1:%.*]] = call float @llvm.minnum.f32(float [[X:%.*]], float [[Y]])
279 ; CHECK-NEXT: [[R:%.*]] = fsub float -0.000000e+00, [[TMP1]]
280 ; CHECK-NEXT: call void @use(float [[NEGY]])
281 ; CHECK-NEXT: ret float [[R]]
283 %negx = fsub float -0.0, %x
284 %negy = fsub float -0.0, %y
285 %r = call float @llvm.maxnum.f32(float %negx, float %negy)
286 call void @use(float %negy)
290 define float @neg_neg_extra_use_x_and_y(float %x, float %y) {
291 ; CHECK-LABEL: @neg_neg_extra_use_x_and_y(
292 ; CHECK-NEXT: [[NEGX:%.*]] = fsub float -0.000000e+00, [[X:%.*]]
293 ; CHECK-NEXT: [[NEGY:%.*]] = fsub float -0.000000e+00, [[Y:%.*]]
294 ; CHECK-NEXT: [[R:%.*]] = call float @llvm.maxnum.f32(float [[NEGX]], float [[NEGY]])
295 ; CHECK-NEXT: call void @use(float [[NEGX]])
296 ; CHECK-NEXT: call void @use(float [[NEGY]])
297 ; CHECK-NEXT: ret float [[R]]
299 %negx = fsub float -0.0, %x
300 %negy = fsub float -0.0, %y
301 %r = call float @llvm.maxnum.f32(float %negx, float %negy)
302 call void @use(float %negx)
303 call void @use(float %negy)