1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2 ; RUN: opt < %s -passes=instsimplify -S | FileCheck %s
4 ;; x * 0 ==> 0 when no-nans and no-signed-zero
5 define float @mul_zero_1(float %a) #0 {
6 ; CHECK-LABEL: @mul_zero_1(
7 ; CHECK-NEXT: ret float 0.000000e+00
9 %b = call nsz nnan float @llvm.experimental.constrained.fmul.f32(float %a, float 0.0, metadata !"round.tonearest", metadata !"fpexcept.ignore")
13 define float @mul_zero_2(float %a) #0 {
14 ; CHECK-LABEL: @mul_zero_2(
15 ; CHECK-NEXT: ret float 0.000000e+00
17 %b = call fast float @llvm.experimental.constrained.fmul.f32(float 0.0, float %a, metadata !"round.tonearest", metadata !"fpexcept.ignore")
21 define <2 x float> @mul_zero_nsz_nnan_vec_undef(<2 x float> %a) #0 {
22 ; CHECK-LABEL: @mul_zero_nsz_nnan_vec_undef(
23 ; CHECK-NEXT: ret <2 x float> zeroinitializer
25 %b = call nsz nnan <2 x float> @llvm.experimental.constrained.fmul.v2f32(<2 x float> %a, <2 x float><float 0.0, float undef>, metadata !"round.tonearest", metadata !"fpexcept.ignore")
29 ;; x * 0 =/=> 0 when there could be nans or -0
30 define float @no_mul_zero_1(float %a) #0 {
31 ; CHECK-LABEL: @no_mul_zero_1(
32 ; CHECK-NEXT: [[B:%.*]] = call nsz float @llvm.experimental.constrained.fmul.f32(float [[A:%.*]], float 0.000000e+00, metadata !"round.tonearest", metadata !"fpexcept.ignore")
33 ; CHECK-NEXT: ret float [[B]]
35 %b = call nsz float @llvm.experimental.constrained.fmul.f32(float %a, float 0.0, metadata !"round.tonearest", metadata !"fpexcept.ignore")
39 define float @no_mul_zero_2(float %a) #0 {
40 ; CHECK-LABEL: @no_mul_zero_2(
41 ; CHECK-NEXT: [[B:%.*]] = call nnan float @llvm.experimental.constrained.fmul.f32(float [[A:%.*]], float 0.000000e+00, metadata !"round.tonearest", metadata !"fpexcept.ignore")
42 ; CHECK-NEXT: ret float [[B]]
44 %b = call nnan float @llvm.experimental.constrained.fmul.f32(float %a, float 0.0, metadata !"round.tonearest", metadata !"fpexcept.ignore")
48 define float @no_mul_zero_3(float %a) #0 {
49 ; CHECK-LABEL: @no_mul_zero_3(
50 ; CHECK-NEXT: [[B:%.*]] = call float @llvm.experimental.constrained.fmul.f32(float [[A:%.*]], float 0.000000e+00, metadata !"round.tonearest", metadata !"fpexcept.ignore")
51 ; CHECK-NEXT: ret float [[B]]
53 %b = call float @llvm.experimental.constrained.fmul.f32(float %a, float 0.0, metadata !"round.tonearest", metadata !"fpexcept.ignore")
57 ; -X + X --> 0.0 (with nnan on the fadd)
59 define float @fadd_binary_fnegx(float %x) #0 {
60 ; CHECK-LABEL: @fadd_binary_fnegx(
61 ; CHECK-NEXT: [[NEGX:%.*]] = call float @llvm.experimental.constrained.fsub.f32(float -0.000000e+00, float [[X:%.*]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
62 ; CHECK-NEXT: [[R:%.*]] = call nnan float @llvm.experimental.constrained.fadd.f32(float [[NEGX]], float [[X]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
63 ; CHECK-NEXT: ret float [[R]]
65 %negx = call float @llvm.experimental.constrained.fsub.f32(float -0.0, float %x, metadata !"round.tonearest", metadata !"fpexcept.ignore")
66 %r = call nnan float @llvm.experimental.constrained.fadd.f32(float %negx, float %x, metadata !"round.tonearest", metadata !"fpexcept.ignore")
70 define float @fadd_unary_fnegx(float %x) #0 {
71 ; CHECK-LABEL: @fadd_unary_fnegx(
72 ; CHECK-NEXT: ret float 0.000000e+00
75 %r = call nnan float @llvm.experimental.constrained.fadd.f32(float %negx, float %x, metadata !"round.tonearest", metadata !"fpexcept.ignore")
79 ; X + -X --> 0.0 (with nnan on the fadd)
81 define <2 x float> @fadd_binary_fnegx_commute_vec(<2 x float> %x) #0 {
82 ; CHECK-LABEL: @fadd_binary_fnegx_commute_vec(
83 ; CHECK-NEXT: [[NEGX:%.*]] = call <2 x float> @llvm.experimental.constrained.fsub.v2f32(<2 x float> <float -0.000000e+00, float -0.000000e+00>, <2 x float> [[X:%.*]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
84 ; CHECK-NEXT: [[R:%.*]] = call nnan <2 x float> @llvm.experimental.constrained.fadd.v2f32(<2 x float> [[X]], <2 x float> [[NEGX]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
85 ; CHECK-NEXT: ret <2 x float> [[R]]
87 %negx = call <2 x float> @llvm.experimental.constrained.fsub.v2f32(<2 x float> <float -0.0, float -0.0>, <2 x float> %x, metadata !"round.tonearest", metadata !"fpexcept.ignore")
88 %r = call nnan <2 x float> @llvm.experimental.constrained.fadd.v2f32(<2 x float> %x, <2 x float> %negx, metadata !"round.tonearest", metadata !"fpexcept.ignore")
92 define <2 x float> @fadd_unary_fnegx_commute_vec(<2 x float> %x) #0 {
93 ; CHECK-LABEL: @fadd_unary_fnegx_commute_vec(
94 ; CHECK-NEXT: ret <2 x float> zeroinitializer
96 %negx = fneg <2 x float> %x
97 %r = call nnan <2 x float> @llvm.experimental.constrained.fadd.v2f32(<2 x float> %x, <2 x float> %negx, metadata !"round.tonearest", metadata !"fpexcept.ignore")
101 define <2 x float> @fadd_fnegx_commute_vec_undef(<2 x float> %x) #0 {
102 ; CHECK-LABEL: @fadd_fnegx_commute_vec_undef(
103 ; CHECK-NEXT: [[NEGX:%.*]] = call <2 x float> @llvm.experimental.constrained.fsub.v2f32(<2 x float> <float undef, float -0.000000e+00>, <2 x float> [[X:%.*]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
104 ; CHECK-NEXT: [[R:%.*]] = call nnan <2 x float> @llvm.experimental.constrained.fadd.v2f32(<2 x float> [[X]], <2 x float> [[NEGX]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
105 ; CHECK-NEXT: ret <2 x float> [[R]]
107 %negx = call <2 x float> @llvm.experimental.constrained.fsub.v2f32(<2 x float> <float undef, float -0.0>, <2 x float> %x, metadata !"round.tonearest", metadata !"fpexcept.ignore")
108 %r = call nnan <2 x float> @llvm.experimental.constrained.fadd.v2f32(<2 x float> %x, <2 x float> %negx, metadata !"round.tonearest", metadata !"fpexcept.ignore")
112 ; https://bugs.llvm.org/show_bug.cgi?id=26958
113 ; https://bugs.llvm.org/show_bug.cgi?id=27151
115 define float @fadd_binary_fneg_nan(float %x) #0 {
116 ; CHECK-LABEL: @fadd_binary_fneg_nan(
117 ; CHECK-NEXT: [[T:%.*]] = call nnan float @llvm.experimental.constrained.fsub.f32(float -0.000000e+00, float [[X:%.*]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
118 ; CHECK-NEXT: [[COULD_BE_NAN:%.*]] = call ninf float @llvm.experimental.constrained.fadd.f32(float [[T]], float [[X]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
119 ; CHECK-NEXT: ret float [[COULD_BE_NAN]]
121 %t = call nnan float @llvm.experimental.constrained.fsub.f32(float -0.0, float %x, metadata !"round.tonearest", metadata !"fpexcept.ignore")
122 %could_be_nan = call ninf float @llvm.experimental.constrained.fadd.f32(float %t, float %x, metadata !"round.tonearest", metadata !"fpexcept.ignore")
123 ret float %could_be_nan
126 define float @fadd_unary_fneg_nan(float %x) #0 {
127 ; CHECK-LABEL: @fadd_unary_fneg_nan(
128 ; CHECK-NEXT: [[T:%.*]] = fneg nnan float [[X:%.*]]
129 ; CHECK-NEXT: [[COULD_BE_NAN:%.*]] = call ninf float @llvm.experimental.constrained.fadd.f32(float [[T]], float [[X]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
130 ; CHECK-NEXT: ret float [[COULD_BE_NAN]]
132 %t = fneg nnan float %x
133 %could_be_nan = call ninf float @llvm.experimental.constrained.fadd.f32(float %t, float %x, metadata !"round.tonearest", metadata !"fpexcept.ignore")
134 ret float %could_be_nan
137 define float @fadd_binary_fneg_nan_commute(float %x) #0 {
138 ; CHECK-LABEL: @fadd_binary_fneg_nan_commute(
139 ; CHECK-NEXT: [[T:%.*]] = call nnan ninf float @llvm.experimental.constrained.fsub.f32(float -0.000000e+00, float [[X:%.*]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
140 ; CHECK-NEXT: [[COULD_BE_NAN:%.*]] = call float @llvm.experimental.constrained.fadd.f32(float [[X]], float [[T]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
141 ; CHECK-NEXT: ret float [[COULD_BE_NAN]]
143 %t = call nnan ninf float @llvm.experimental.constrained.fsub.f32(float -0.0, float %x, metadata !"round.tonearest", metadata !"fpexcept.ignore")
144 %could_be_nan = call float @llvm.experimental.constrained.fadd.f32(float %x, float %t, metadata !"round.tonearest", metadata !"fpexcept.ignore")
145 ret float %could_be_nan
148 define float @fadd_unary_fneg_nan_commute(float %x) #0 {
149 ; CHECK-LABEL: @fadd_unary_fneg_nan_commute(
150 ; CHECK-NEXT: [[T:%.*]] = fneg nnan ninf float [[X:%.*]]
151 ; CHECK-NEXT: [[COULD_BE_NAN:%.*]] = call float @llvm.experimental.constrained.fadd.f32(float [[X]], float [[T]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
152 ; CHECK-NEXT: ret float [[COULD_BE_NAN]]
154 %t = fneg nnan ninf float %x
155 %could_be_nan = call float @llvm.experimental.constrained.fadd.f32(float %x, float %t, metadata !"round.tonearest", metadata !"fpexcept.ignore")
156 ret float %could_be_nan
159 ; X + (0.0 - X) --> 0.0 (with nnan on the fadd)
161 define float @fadd_fsub_nnan_ninf(float %x) #0 {
162 ; CHECK-LABEL: @fadd_fsub_nnan_ninf(
163 ; CHECK-NEXT: [[SUB:%.*]] = call nnan ninf float @llvm.experimental.constrained.fsub.f32(float 0.000000e+00, float [[X:%.*]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
164 ; CHECK-NEXT: [[ZERO:%.*]] = call nnan ninf float @llvm.experimental.constrained.fadd.f32(float [[X]], float [[SUB]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
165 ; CHECK-NEXT: ret float [[ZERO]]
167 %sub = call nnan ninf float @llvm.experimental.constrained.fsub.f32(float 0.0, float %x, metadata !"round.tonearest", metadata !"fpexcept.ignore")
168 %zero = call nnan ninf float @llvm.experimental.constrained.fadd.f32(float %x, float %sub, metadata !"round.tonearest", metadata !"fpexcept.ignore")
172 ; (0.0 - X) + X --> 0.0 (with nnan on the fadd)
174 define <2 x float> @fadd_fsub_nnan_ninf_commute_vec(<2 x float> %x) #0 {
175 ; CHECK-LABEL: @fadd_fsub_nnan_ninf_commute_vec(
176 ; CHECK-NEXT: [[SUB:%.*]] = call <2 x float> @llvm.experimental.constrained.fsub.v2f32(<2 x float> zeroinitializer, <2 x float> [[X:%.*]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
177 ; CHECK-NEXT: [[ZERO:%.*]] = call nnan ninf <2 x float> @llvm.experimental.constrained.fadd.v2f32(<2 x float> [[SUB]], <2 x float> [[X]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
178 ; CHECK-NEXT: ret <2 x float> [[ZERO]]
180 %sub = call <2 x float> @llvm.experimental.constrained.fsub.v2f32(<2 x float> zeroinitializer, <2 x float> %x, metadata !"round.tonearest", metadata !"fpexcept.ignore")
181 %zero = call nnan ninf <2 x float> @llvm.experimental.constrained.fadd.v2f32(<2 x float> %sub, <2 x float> %x, metadata !"round.tonearest", metadata !"fpexcept.ignore")
182 ret <2 x float> %zero
185 ; 'ninf' is not required because 'nnan' allows us to assume
186 ; that X is not INF or -INF (adding opposite INFs would be NaN).
188 define float @fadd_fsub_nnan(float %x) #0 {
189 ; CHECK-LABEL: @fadd_fsub_nnan(
190 ; CHECK-NEXT: [[SUB:%.*]] = call float @llvm.experimental.constrained.fsub.f32(float 0.000000e+00, float [[X:%.*]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
191 ; CHECK-NEXT: [[ZERO:%.*]] = call nnan float @llvm.experimental.constrained.fadd.f32(float [[SUB]], float [[X]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
192 ; CHECK-NEXT: ret float [[ZERO]]
194 %sub = call float @llvm.experimental.constrained.fsub.f32(float 0.0, float %x, metadata !"round.tonearest", metadata !"fpexcept.ignore")
195 %zero = call nnan float @llvm.experimental.constrained.fadd.f32(float %sub, float %x, metadata !"round.tonearest", metadata !"fpexcept.ignore")
199 ; fsub nnan x, x ==> 0.0
200 define float @fsub_x_x(float %a) #0 {
202 ; CHECK-LABEL: @fsub_x_x(
203 ; CHECK-NEXT: [[NO_ZERO1:%.*]] = call ninf float @llvm.experimental.constrained.fsub.f32(float [[A:%.*]], float [[A]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
204 ; CHECK-NEXT: [[NO_ZERO2:%.*]] = call float @llvm.experimental.constrained.fsub.f32(float [[A]], float [[A]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
205 ; CHECK-NEXT: [[NO_ZERO:%.*]] = call float @llvm.experimental.constrained.fadd.f32(float [[NO_ZERO1]], float [[NO_ZERO2]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
206 ; CHECK-NEXT: ret float [[NO_ZERO]]
208 %zero1 = call nnan float @llvm.experimental.constrained.fsub.f32(float %a, float %a, metadata !"round.tonearest", metadata !"fpexcept.ignore")
211 %no_zero1 = call ninf float @llvm.experimental.constrained.fsub.f32(float %a, float %a, metadata !"round.tonearest", metadata !"fpexcept.ignore")
212 %no_zero2 = call float @llvm.experimental.constrained.fsub.f32(float %a, float %a, metadata !"round.tonearest", metadata !"fpexcept.ignore")
213 %no_zero = call float @llvm.experimental.constrained.fadd.f32(float %no_zero1, float %no_zero2, metadata !"round.tonearest", metadata !"fpexcept.ignore")
216 %ret = call nsz float @llvm.experimental.constrained.fadd.f32(float %no_zero, float %zero1, metadata !"round.tonearest", metadata !"fpexcept.ignore")
221 ; fsub nsz 0.0, (fsub 0.0, X) ==> X
222 define float @fsub_0_0_x(float %a) #0 {
223 ; CHECK-LABEL: @fsub_0_0_x(
224 ; CHECK-NEXT: [[T1:%.*]] = call float @llvm.experimental.constrained.fsub.f32(float 0.000000e+00, float [[A:%.*]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
225 ; CHECK-NEXT: [[RET:%.*]] = call nsz float @llvm.experimental.constrained.fsub.f32(float 0.000000e+00, float [[T1]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
226 ; CHECK-NEXT: ret float [[RET]]
228 %t1 = call float @llvm.experimental.constrained.fsub.f32(float 0.0, float %a, metadata !"round.tonearest", metadata !"fpexcept.ignore")
229 %ret = call nsz float @llvm.experimental.constrained.fsub.f32(float 0.0, float %t1, metadata !"round.tonearest", metadata !"fpexcept.ignore")
233 ; fsub nsz 0.0, (fneg X) ==> X
234 define float @fneg_x(float %a) #0 {
235 ; CHECK-LABEL: @fneg_x(
236 ; CHECK-NEXT: ret float [[A:%.*]]
239 %ret = call nsz float @llvm.experimental.constrained.fsub.f32(float 0.0, float %t1, metadata !"round.tonearest", metadata !"fpexcept.ignore")
243 define <2 x float> @fsub_0_0_x_vec_undef1(<2 x float> %a) #0 {
244 ; CHECK-LABEL: @fsub_0_0_x_vec_undef1(
245 ; CHECK-NEXT: [[T1:%.*]] = call <2 x float> @llvm.experimental.constrained.fsub.v2f32(<2 x float> <float 0.000000e+00, float undef>, <2 x float> [[A:%.*]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
246 ; CHECK-NEXT: [[RET:%.*]] = call nsz <2 x float> @llvm.experimental.constrained.fsub.v2f32(<2 x float> zeroinitializer, <2 x float> [[T1]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
247 ; CHECK-NEXT: ret <2 x float> [[RET]]
249 %t1 = call <2 x float> @llvm.experimental.constrained.fsub.v2f32(<2 x float> <float 0.0, float undef>, <2 x float> %a, metadata !"round.tonearest", metadata !"fpexcept.ignore")
250 %ret = call nsz <2 x float> @llvm.experimental.constrained.fsub.v2f32(<2 x float> zeroinitializer, <2 x float> %t1, metadata !"round.tonearest", metadata !"fpexcept.ignore")
254 define <2 x float> @fneg_x_vec_undef1(<2 x float> %a) #0 {
255 ; CHECK-LABEL: @fneg_x_vec_undef1(
256 ; CHECK-NEXT: ret <2 x float> [[A:%.*]]
258 %t1 = fneg <2 x float> %a
259 %ret = call nsz <2 x float> @llvm.experimental.constrained.fsub.v2f32(<2 x float> <float 0.0, float undef>, <2 x float> %t1, metadata !"round.tonearest", metadata !"fpexcept.ignore")
263 define <2 x float> @fsub_0_0_x_vec_undef2(<2 x float> %a) #0 {
264 ; CHECK-LABEL: @fsub_0_0_x_vec_undef2(
265 ; CHECK-NEXT: [[T1:%.*]] = call <2 x float> @llvm.experimental.constrained.fsub.v2f32(<2 x float> zeroinitializer, <2 x float> [[A:%.*]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
266 ; CHECK-NEXT: [[RET:%.*]] = call nsz <2 x float> @llvm.experimental.constrained.fsub.v2f32(<2 x float> <float undef, float -0.000000e+00>, <2 x float> [[T1]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
267 ; CHECK-NEXT: ret <2 x float> [[RET]]
269 %t1 = call <2 x float> @llvm.experimental.constrained.fsub.v2f32(<2 x float> zeroinitializer, <2 x float> %a, metadata !"round.tonearest", metadata !"fpexcept.ignore")
270 %ret = call nsz <2 x float> @llvm.experimental.constrained.fsub.v2f32(<2 x float> <float undef, float -0.0>, <2 x float> %t1, metadata !"round.tonearest", metadata !"fpexcept.ignore")
274 ; fadd nsz X, 0 ==> X
276 define <2 x float> @fadd_zero_nsz_vec(<2 x float> %x) #0 {
277 ; CHECK-LABEL: @fadd_zero_nsz_vec(
278 ; CHECK-NEXT: ret <2 x float> [[X:%.*]]
280 %r = call nsz <2 x float> @llvm.experimental.constrained.fadd.v2f32(<2 x float> %x, <2 x float> zeroinitializer, metadata !"round.tonearest", metadata !"fpexcept.ignore")
284 define <2 x float> @fadd_zero_nsz_vec_undef(<2 x float> %x) #0 {
285 ; CHECK-LABEL: @fadd_zero_nsz_vec_undef(
286 ; CHECK-NEXT: ret <2 x float> [[X:%.*]]
288 %r = call nsz <2 x float> @llvm.experimental.constrained.fadd.v2f32(<2 x float> %x, <2 x float> <float 0.0, float undef>, metadata !"round.tonearest", metadata !"fpexcept.ignore")
292 define float @nofold_fadd_x_0(float %a) #0 {
294 ; CHECK-LABEL: @nofold_fadd_x_0(
295 ; CHECK-NEXT: [[NO_ZERO1:%.*]] = call ninf float @llvm.experimental.constrained.fadd.f32(float [[A:%.*]], float 0.000000e+00, metadata !"round.tonearest", metadata !"fpexcept.ignore")
296 ; CHECK-NEXT: [[NO_ZERO2:%.*]] = call nnan float @llvm.experimental.constrained.fadd.f32(float [[A]], float 0.000000e+00, metadata !"round.tonearest", metadata !"fpexcept.ignore")
297 ; CHECK-NEXT: [[NO_ZERO:%.*]] = call float @llvm.experimental.constrained.fadd.f32(float [[NO_ZERO1]], float [[NO_ZERO2]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
298 ; CHECK-NEXT: ret float [[NO_ZERO]]
300 %no_zero1 = call ninf float @llvm.experimental.constrained.fadd.f32(float %a, float 0.0, metadata !"round.tonearest", metadata !"fpexcept.ignore")
301 %no_zero2 = call nnan float @llvm.experimental.constrained.fadd.f32(float %a, float 0.0, metadata !"round.tonearest", metadata !"fpexcept.ignore")
302 %no_zero = call float @llvm.experimental.constrained.fadd.f32(float %no_zero1, float %no_zero2, metadata !"round.tonearest", metadata !"fpexcept.ignore")
306 define float @fold_fadd_nsz_x_0(float %a) #0 {
307 ; CHECK-LABEL: @fold_fadd_nsz_x_0(
308 ; CHECK-NEXT: ret float [[A:%.*]]
310 %add = call nsz float @llvm.experimental.constrained.fadd.f32(float %a, float 0.0, metadata !"round.tonearest", metadata !"fpexcept.ignore")
314 ; 'nsz' does not guarantee that -0.0 does not occur, so this does not simplify.
316 define float @fold_fadd_cannot_be_neg0_nsz_src_x_0(float %a, float %b) #0 {
317 ; CHECK-LABEL: @fold_fadd_cannot_be_neg0_nsz_src_x_0(
318 ; CHECK-NEXT: [[NSZ:%.*]] = call nsz float @llvm.experimental.constrained.fmul.f32(float [[A:%.*]], float [[B:%.*]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
319 ; CHECK-NEXT: [[ADD:%.*]] = call float @llvm.experimental.constrained.fadd.f32(float [[NSZ]], float 0.000000e+00, metadata !"round.tonearest", metadata !"fpexcept.ignore")
320 ; CHECK-NEXT: ret float [[ADD]]
322 %nsz = call nsz float @llvm.experimental.constrained.fmul.f32(float %a, float %b, metadata !"round.tonearest", metadata !"fpexcept.ignore")
323 %add = call float @llvm.experimental.constrained.fadd.f32(float %nsz, float 0.0, metadata !"round.tonearest", metadata !"fpexcept.ignore")
327 define float @fold_fadd_cannot_be_neg0_fabs_src_x_0(float %a) #0 {
328 ; CHECK-LABEL: @fold_fadd_cannot_be_neg0_fabs_src_x_0(
329 ; CHECK-NEXT: [[FABS:%.*]] = call float @llvm.fabs.f32(float [[A:%.*]]) #[[ATTR0:[0-9]+]]
330 ; CHECK-NEXT: ret float [[FABS]]
332 %fabs = call float @llvm.fabs.f32(float %a) #0
333 %add = call float @llvm.experimental.constrained.fadd.f32(float %fabs, float 0.0, metadata !"round.tonearest", metadata !"fpexcept.ignore")
337 ; 'nsz' does not guarantee that -0.0 does not occur, so this does not simplify.
339 define float @fold_fadd_cannot_be_neg0_sqrt_nsz_src_x_0(float %a, float %b) #0 {
340 ; CHECK-LABEL: @fold_fadd_cannot_be_neg0_sqrt_nsz_src_x_0(
341 ; CHECK-NEXT: [[NSZ:%.*]] = call nsz float @llvm.experimental.constrained.fmul.f32(float [[A:%.*]], float [[B:%.*]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
342 ; CHECK-NEXT: [[SQRT:%.*]] = call float @llvm.experimental.constrained.sqrt.f32(float [[NSZ]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
343 ; CHECK-NEXT: [[ADD:%.*]] = call float @llvm.experimental.constrained.fadd.f32(float [[SQRT]], float 0.000000e+00, metadata !"round.tonearest", metadata !"fpexcept.ignore")
344 ; CHECK-NEXT: ret float [[ADD]]
346 %nsz = call nsz float @llvm.experimental.constrained.fmul.f32(float %a, float %b, metadata !"round.tonearest", metadata !"fpexcept.ignore")
347 %sqrt = call float @llvm.experimental.constrained.sqrt.f32(float %nsz, metadata !"round.tonearest", metadata !"fpexcept.ignore")
348 %add = call float @llvm.experimental.constrained.fadd.f32(float %sqrt, float 0.0, metadata !"round.tonearest", metadata !"fpexcept.ignore")
352 ; 'nsz' does not guarantee that -0.0 does not occur, so this does not simplify.
354 define float @fold_fadd_cannot_be_neg0_canonicalize_nsz_src_x_0(float %a, float %b) #0 {
355 ; CHECK-LABEL: @fold_fadd_cannot_be_neg0_canonicalize_nsz_src_x_0(
356 ; CHECK-NEXT: [[NSZ:%.*]] = call nsz float @llvm.experimental.constrained.fmul.f32(float [[A:%.*]], float [[B:%.*]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
357 ; CHECK-NEXT: [[CANON:%.*]] = call float @llvm.canonicalize.f32(float [[NSZ]]) #[[ATTR0]]
358 ; CHECK-NEXT: [[ADD:%.*]] = call float @llvm.experimental.constrained.fadd.f32(float [[CANON]], float 0.000000e+00, metadata !"round.tonearest", metadata !"fpexcept.ignore")
359 ; CHECK-NEXT: ret float [[ADD]]
361 %nsz = call nsz float @llvm.experimental.constrained.fmul.f32(float %a, float %b, metadata !"round.tonearest", metadata !"fpexcept.ignore")
362 %canon = call float @llvm.canonicalize.f32(float %nsz) #0
363 %add = call float @llvm.experimental.constrained.fadd.f32(float %canon, float 0.0, metadata !"round.tonearest", metadata !"fpexcept.ignore")
367 ; fdiv nsz nnan 0, X ==> 0
370 define double @fdiv_zero_by_x(double %x) #0 {
371 ; CHECK-LABEL: @fdiv_zero_by_x(
372 ; CHECK-NEXT: ret double 0.000000e+00
374 %r = call nnan nsz double @llvm.experimental.constrained.fdiv.f64(double 0.0, double %x, metadata !"round.tonearest", metadata !"fpexcept.ignore")
378 define <2 x double> @fdiv_zero_by_x_vec_undef(<2 x double> %x) #0 {
379 ; CHECK-LABEL: @fdiv_zero_by_x_vec_undef(
380 ; CHECK-NEXT: ret <2 x double> zeroinitializer
382 %r = call nnan nsz <2 x double> @llvm.experimental.constrained.fdiv.v2f64(<2 x double> <double 0.0, double undef>, <2 x double> %x, metadata !"round.tonearest", metadata !"fpexcept.ignore")
387 ; nsz is not necessary - frem result always has the sign of the dividend
389 define double @frem_zero_by_x(double %x) #0 {
390 ; CHECK-LABEL: @frem_zero_by_x(
391 ; CHECK-NEXT: ret double 0.000000e+00
393 %r = call nnan double @llvm.experimental.constrained.frem.f64(double 0.0, double %x, metadata !"round.tonearest", metadata !"fpexcept.ignore")
397 define <2 x double> @frem_poszero_by_x_vec_undef(<2 x double> %x) #0 {
398 ; CHECK-LABEL: @frem_poszero_by_x_vec_undef(
399 ; CHECK-NEXT: ret <2 x double> zeroinitializer
401 %r = call nnan <2 x double> @llvm.experimental.constrained.frem.v2f64(<2 x double> <double 0.0, double undef>, <2 x double> %x, metadata !"round.tonearest", metadata !"fpexcept.ignore")
406 ; nsz is not necessary - frem result always has the sign of the dividend
408 define double @frem_negzero_by_x(double %x) #0 {
409 ; CHECK-LABEL: @frem_negzero_by_x(
410 ; CHECK-NEXT: ret double -0.000000e+00
412 %r = call nnan double @llvm.experimental.constrained.frem.f64(double -0.0, double %x, metadata !"round.tonearest", metadata !"fpexcept.ignore")
416 define <2 x double> @frem_negzero_by_x_vec_undef(<2 x double> %x) #0 {
417 ; CHECK-LABEL: @frem_negzero_by_x_vec_undef(
418 ; CHECK-NEXT: ret <2 x double> <double -0.000000e+00, double -0.000000e+00>
420 %r = call nnan <2 x double> @llvm.experimental.constrained.frem.v2f64(<2 x double> <double undef, double -0.0>, <2 x double> %x, metadata !"round.tonearest", metadata !"fpexcept.ignore")
424 define float @fdiv_self(float %f) #0 {
425 ; CHECK-LABEL: @fdiv_self(
426 ; CHECK-NEXT: ret float 1.000000e+00
428 %div = call nnan float @llvm.experimental.constrained.fdiv.f32(float %f, float %f, metadata !"round.tonearest", metadata !"fpexcept.ignore")
432 define float @fdiv_self_invalid(float %f) #0 {
433 ; CHECK-LABEL: @fdiv_self_invalid(
434 ; CHECK-NEXT: [[DIV:%.*]] = call float @llvm.experimental.constrained.fdiv.f32(float [[F:%.*]], float [[F]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
435 ; CHECK-NEXT: ret float [[DIV]]
437 %div = call float @llvm.experimental.constrained.fdiv.f32(float %f, float %f, metadata !"round.tonearest", metadata !"fpexcept.ignore")
441 define float @fdiv_neg1(float %f) #0 {
442 ; CHECK-LABEL: @fdiv_neg1(
443 ; CHECK-NEXT: [[NEG:%.*]] = call fast float @llvm.experimental.constrained.fsub.f32(float -0.000000e+00, float [[F:%.*]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
444 ; CHECK-NEXT: [[DIV:%.*]] = call nnan float @llvm.experimental.constrained.fdiv.f32(float [[NEG]], float [[F]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
445 ; CHECK-NEXT: ret float [[DIV]]
447 %neg = call fast float @llvm.experimental.constrained.fsub.f32(float -0.000000e+00, float %f, metadata !"round.tonearest", metadata !"fpexcept.ignore")
448 %div = call nnan float @llvm.experimental.constrained.fdiv.f32(float %neg, float %f, metadata !"round.tonearest", metadata !"fpexcept.ignore")
452 define float @fdiv_neg2(float %f) #0 {
453 ; CHECK-LABEL: @fdiv_neg2(
454 ; CHECK-NEXT: [[NEG:%.*]] = call fast float @llvm.experimental.constrained.fsub.f32(float 0.000000e+00, float [[F:%.*]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
455 ; CHECK-NEXT: [[DIV:%.*]] = call nnan float @llvm.experimental.constrained.fdiv.f32(float [[NEG]], float [[F]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
456 ; CHECK-NEXT: ret float [[DIV]]
458 %neg = call fast float @llvm.experimental.constrained.fsub.f32(float 0.000000e+00, float %f, metadata !"round.tonearest", metadata !"fpexcept.ignore")
459 %div = call nnan float @llvm.experimental.constrained.fdiv.f32(float %neg, float %f, metadata !"round.tonearest", metadata !"fpexcept.ignore")
463 define float @fdiv_neg_invalid(float %f) #0 {
464 ; CHECK-LABEL: @fdiv_neg_invalid(
465 ; CHECK-NEXT: [[NEG:%.*]] = call fast float @llvm.experimental.constrained.fsub.f32(float -0.000000e+00, float [[F:%.*]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
466 ; CHECK-NEXT: [[DIV:%.*]] = call float @llvm.experimental.constrained.fdiv.f32(float [[NEG]], float [[F]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
467 ; CHECK-NEXT: ret float [[DIV]]
469 %neg = call fast float @llvm.experimental.constrained.fsub.f32(float -0.000000e+00, float %f, metadata !"round.tonearest", metadata !"fpexcept.ignore")
470 %div = call float @llvm.experimental.constrained.fdiv.f32(float %neg, float %f, metadata !"round.tonearest", metadata !"fpexcept.ignore")
474 define float @fdiv_neg_swapped1(float %f) #0 {
475 ; CHECK-LABEL: @fdiv_neg_swapped1(
476 ; CHECK-NEXT: [[NEG:%.*]] = call fast float @llvm.experimental.constrained.fsub.f32(float -0.000000e+00, float [[F:%.*]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
477 ; CHECK-NEXT: [[DIV:%.*]] = call nnan float @llvm.experimental.constrained.fdiv.f32(float [[F]], float [[NEG]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
478 ; CHECK-NEXT: ret float [[DIV]]
480 %neg = call fast float @llvm.experimental.constrained.fsub.f32(float -0.000000e+00, float %f, metadata !"round.tonearest", metadata !"fpexcept.ignore")
481 %div = call nnan float @llvm.experimental.constrained.fdiv.f32(float %f, float %neg, metadata !"round.tonearest", metadata !"fpexcept.ignore")
485 define float @fdiv_neg_swapped2(float %f) #0 {
486 ; CHECK-LABEL: @fdiv_neg_swapped2(
487 ; CHECK-NEXT: [[NEG:%.*]] = call float @llvm.experimental.constrained.fsub.f32(float 0.000000e+00, float [[F:%.*]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
488 ; CHECK-NEXT: [[DIV:%.*]] = call nnan float @llvm.experimental.constrained.fdiv.f32(float [[F]], float [[NEG]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
489 ; CHECK-NEXT: ret float [[DIV]]
491 %neg = call float @llvm.experimental.constrained.fsub.f32(float 0.000000e+00, float %f, metadata !"round.tonearest", metadata !"fpexcept.ignore")
492 %div = call nnan float @llvm.experimental.constrained.fdiv.f32(float %f, float %neg, metadata !"round.tonearest", metadata !"fpexcept.ignore")
496 define <2 x float> @fdiv_neg_vec_undef_elt(<2 x float> %f) #0 {
497 ; CHECK-LABEL: @fdiv_neg_vec_undef_elt(
498 ; CHECK-NEXT: [[NEG:%.*]] = call <2 x float> @llvm.experimental.constrained.fsub.v2f32(<2 x float> <float 0.000000e+00, float undef>, <2 x float> [[F:%.*]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
499 ; CHECK-NEXT: [[DIV:%.*]] = call nnan <2 x float> @llvm.experimental.constrained.fdiv.v2f32(<2 x float> [[F]], <2 x float> [[NEG]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
500 ; CHECK-NEXT: ret <2 x float> [[DIV]]
502 %neg = call <2 x float> @llvm.experimental.constrained.fsub.v2f32(<2 x float> <float 0.000000e+00, float undef>, <2 x float> %f, metadata !"round.tonearest", metadata !"fpexcept.ignore")
503 %div = call nnan <2 x float> @llvm.experimental.constrained.fdiv.v2f32(<2 x float> %f, <2 x float> %neg, metadata !"round.tonearest", metadata !"fpexcept.ignore")
507 ; PR21126: http://llvm.org/bugs/show_bug.cgi?id=21126
508 ; With loose math, sqrt(X) * sqrt(X) is just X.
510 declare double @llvm.sqrt.f64(double)
512 define double @sqrt_squared(double %f) #0 {
513 ; CHECK-LABEL: @sqrt_squared(
514 ; CHECK-NEXT: [[SQRT:%.*]] = call double @llvm.experimental.constrained.sqrt.f64(double [[F:%.*]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
515 ; CHECK-NEXT: [[MUL:%.*]] = call reassoc nnan nsz double @llvm.experimental.constrained.fmul.f64(double [[SQRT]], double [[SQRT]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
516 ; CHECK-NEXT: ret double [[MUL]]
518 %sqrt = call double @llvm.experimental.constrained.sqrt.f64(double %f, metadata !"round.tonearest", metadata !"fpexcept.ignore")
519 %mul = call reassoc nnan nsz double @llvm.experimental.constrained.fmul.f64(double %sqrt, double %sqrt, metadata !"round.tonearest", metadata !"fpexcept.ignore")
523 ; Negative tests for the above transform: we need all 3 of those flags.
525 define double @sqrt_squared_not_fast_enough1(double %f) #0 {
526 ; CHECK-LABEL: @sqrt_squared_not_fast_enough1(
527 ; CHECK-NEXT: [[SQRT:%.*]] = call double @llvm.experimental.constrained.sqrt.f64(double [[F:%.*]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
528 ; CHECK-NEXT: [[MUL:%.*]] = call nnan nsz double @llvm.experimental.constrained.fmul.f64(double [[SQRT]], double [[SQRT]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
529 ; CHECK-NEXT: ret double [[MUL]]
531 %sqrt = call double @llvm.experimental.constrained.sqrt.f64(double %f, metadata !"round.tonearest", metadata !"fpexcept.ignore")
532 %mul = call nnan nsz double @llvm.experimental.constrained.fmul.f64(double %sqrt, double %sqrt, metadata !"round.tonearest", metadata !"fpexcept.ignore")
536 define double @sqrt_squared_not_fast_enough2(double %f) #0 {
537 ; CHECK-LABEL: @sqrt_squared_not_fast_enough2(
538 ; CHECK-NEXT: [[SQRT:%.*]] = call double @llvm.experimental.constrained.sqrt.f64(double [[F:%.*]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
539 ; CHECK-NEXT: [[MUL:%.*]] = call reassoc nnan double @llvm.experimental.constrained.fmul.f64(double [[SQRT]], double [[SQRT]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
540 ; CHECK-NEXT: ret double [[MUL]]
542 %sqrt = call double @llvm.experimental.constrained.sqrt.f64(double %f, metadata !"round.tonearest", metadata !"fpexcept.ignore")
543 %mul = call reassoc nnan double @llvm.experimental.constrained.fmul.f64(double %sqrt, double %sqrt, metadata !"round.tonearest", metadata !"fpexcept.ignore")
547 define double @sqrt_squared_not_fast_enough3(double %f) #0 {
548 ; CHECK-LABEL: @sqrt_squared_not_fast_enough3(
549 ; CHECK-NEXT: [[SQRT:%.*]] = call double @llvm.experimental.constrained.sqrt.f64(double [[F:%.*]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
550 ; CHECK-NEXT: [[MUL:%.*]] = call reassoc nsz double @llvm.experimental.constrained.fmul.f64(double [[SQRT]], double [[SQRT]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
551 ; CHECK-NEXT: ret double [[MUL]]
553 %sqrt = call double @llvm.experimental.constrained.sqrt.f64(double %f, metadata !"round.tonearest", metadata !"fpexcept.ignore")
554 %mul = call reassoc nsz double @llvm.experimental.constrained.fmul.f64(double %sqrt, double %sqrt, metadata !"round.tonearest", metadata !"fpexcept.ignore")
558 declare float @llvm.fabs.f32(float)
559 declare float @llvm.experimental.constrained.sqrt.f32(float, metadata, metadata)
560 declare double @llvm.experimental.constrained.sqrt.f64(double, metadata, metadata)
561 declare float @llvm.canonicalize.f32(float)
563 declare float @llvm.experimental.constrained.fadd.f32(float, float, metadata, metadata)
564 declare <2 x float> @llvm.experimental.constrained.fadd.v2f32(<2 x float>, <2 x float>, metadata, metadata)
566 declare float @llvm.experimental.constrained.fsub.f32(float, float, metadata, metadata)
567 declare <2 x float> @llvm.experimental.constrained.fsub.v2f32(<2 x float>, <2 x float>, metadata, metadata)
569 declare float @llvm.experimental.constrained.fmul.f32(float, float, metadata, metadata)
570 declare double @llvm.experimental.constrained.fmul.f64(double, double, metadata, metadata)
571 declare <2 x float> @llvm.experimental.constrained.fmul.v2f32(<2 x float>, <2 x float>, metadata, metadata)
573 declare float @llvm.experimental.constrained.fdiv.f32(float, float, metadata, metadata)
574 declare double @llvm.experimental.constrained.fdiv.f64(double, double, metadata, metadata)
575 declare <2 x float> @llvm.experimental.constrained.fdiv.v2f32(<2 x float>, <2 x float>, metadata, metadata)
576 declare <2 x double> @llvm.experimental.constrained.fdiv.v2f64(<2 x double>, <2 x double>, metadata, metadata)
578 declare double @llvm.experimental.constrained.frem.f64(double, double, metadata, metadata)
579 declare <2 x double> @llvm.experimental.constrained.frem.v2f64(<2 x double>, <2 x double>, metadata, metadata)
581 attributes #0 = { strictfp }