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clang-p2996/llvm/test/Transforms/InstSimplify/fast-math-strictfp.ll
Kevin P. Neal eb2558c566 Recommit [FPEnv][InstSimplify] Correct strictfp tests. 
The errant test in the previous iteration has been corrected now.

Correct InstSimplify strictfp tests to follow the rules documented
in the LangRef:
https://llvm.org/docs/LangRef.html#constrained-floating-point-intrinsics

Some of these tests needed the strictfp attribute on function
definitions. After D154991 the constrained intrinsics have the
strictfp attribute by default so they don't need it here, but other
functions do.

Test changes verified with D146845.
2023-08-03 09:44:50 -04:00

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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -passes=instsimplify -S | FileCheck %s
;; x * 0 ==> 0 when no-nans and no-signed-zero
define float @mul_zero_1(float %a) #0 {
; CHECK-LABEL: @mul_zero_1(
; CHECK-NEXT: ret float 0.000000e+00
;
%b = call nsz nnan float @llvm.experimental.constrained.fmul.f32(float %a, float 0.0, metadata !"round.tonearest", metadata !"fpexcept.ignore")
ret float %b
}
define float @mul_zero_2(float %a) #0 {
; CHECK-LABEL: @mul_zero_2(
; CHECK-NEXT: ret float 0.000000e+00
;
%b = call fast float @llvm.experimental.constrained.fmul.f32(float 0.0, float %a, metadata !"round.tonearest", metadata !"fpexcept.ignore")
ret float %b
}
define <2 x float> @mul_zero_nsz_nnan_vec_undef(<2 x float> %a) #0 {
; CHECK-LABEL: @mul_zero_nsz_nnan_vec_undef(
; CHECK-NEXT: ret <2 x float> zeroinitializer
;
%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")
ret <2 x float> %b
}
;; x * 0 =/=> 0 when there could be nans or -0
define float @no_mul_zero_1(float %a) #0 {
; CHECK-LABEL: @no_mul_zero_1(
; CHECK-NEXT: [[B:%.*]] = call nsz float @llvm.experimental.constrained.fmul.f32(float [[A:%.*]], float 0.000000e+00, metadata !"round.tonearest", metadata !"fpexcept.ignore")
; CHECK-NEXT: ret float [[B]]
;
%b = call nsz float @llvm.experimental.constrained.fmul.f32(float %a, float 0.0, metadata !"round.tonearest", metadata !"fpexcept.ignore")
ret float %b
}
define float @no_mul_zero_2(float %a) #0 {
; CHECK-LABEL: @no_mul_zero_2(
; CHECK-NEXT: [[B:%.*]] = call nnan float @llvm.experimental.constrained.fmul.f32(float [[A:%.*]], float 0.000000e+00, metadata !"round.tonearest", metadata !"fpexcept.ignore")
; CHECK-NEXT: ret float [[B]]
;
%b = call nnan float @llvm.experimental.constrained.fmul.f32(float %a, float 0.0, metadata !"round.tonearest", metadata !"fpexcept.ignore")
ret float %b
}
define float @no_mul_zero_3(float %a) #0 {
; CHECK-LABEL: @no_mul_zero_3(
; CHECK-NEXT: [[B:%.*]] = call float @llvm.experimental.constrained.fmul.f32(float [[A:%.*]], float 0.000000e+00, metadata !"round.tonearest", metadata !"fpexcept.ignore")
; CHECK-NEXT: ret float [[B]]
;
%b = call float @llvm.experimental.constrained.fmul.f32(float %a, float 0.0, metadata !"round.tonearest", metadata !"fpexcept.ignore")
ret float %b
}
; -X + X --> 0.0 (with nnan on the fadd)
define float @fadd_binary_fnegx(float %x) #0 {
; CHECK-LABEL: @fadd_binary_fnegx(
; CHECK-NEXT: [[NEGX:%.*]] = call float @llvm.experimental.constrained.fsub.f32(float -0.000000e+00, float [[X:%.*]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
; CHECK-NEXT: [[R:%.*]] = call nnan float @llvm.experimental.constrained.fadd.f32(float [[NEGX]], float [[X]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
; CHECK-NEXT: ret float [[R]]
;
%negx = call float @llvm.experimental.constrained.fsub.f32(float -0.0, float %x, metadata !"round.tonearest", metadata !"fpexcept.ignore")
%r = call nnan float @llvm.experimental.constrained.fadd.f32(float %negx, float %x, metadata !"round.tonearest", metadata !"fpexcept.ignore")
ret float %r
}
define float @fadd_unary_fnegx(float %x) #0 {
; CHECK-LABEL: @fadd_unary_fnegx(
; CHECK-NEXT: ret float 0.000000e+00
;
%negx = fneg float %x
%r = call nnan float @llvm.experimental.constrained.fadd.f32(float %negx, float %x, metadata !"round.tonearest", metadata !"fpexcept.ignore")
ret float %r
}
; X + -X --> 0.0 (with nnan on the fadd)
define <2 x float> @fadd_binary_fnegx_commute_vec(<2 x float> %x) #0 {
; CHECK-LABEL: @fadd_binary_fnegx_commute_vec(
; 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")
; 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")
; CHECK-NEXT: ret <2 x float> [[R]]
;
%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")
%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")
ret <2 x float> %r
}
define <2 x float> @fadd_unary_fnegx_commute_vec(<2 x float> %x) #0 {
; CHECK-LABEL: @fadd_unary_fnegx_commute_vec(
; CHECK-NEXT: ret <2 x float> zeroinitializer
;
%negx = fneg <2 x float> %x
%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")
ret <2 x float> %r
}
define <2 x float> @fadd_fnegx_commute_vec_undef(<2 x float> %x) #0 {
; CHECK-LABEL: @fadd_fnegx_commute_vec_undef(
; 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")
; 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")
; CHECK-NEXT: ret <2 x float> [[R]]
;
%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")
%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")
ret <2 x float> %r
}
; https://bugs.llvm.org/show_bug.cgi?id=26958
; https://bugs.llvm.org/show_bug.cgi?id=27151
define float @fadd_binary_fneg_nan(float %x) #0 {
; CHECK-LABEL: @fadd_binary_fneg_nan(
; CHECK-NEXT: [[T:%.*]] = call nnan float @llvm.experimental.constrained.fsub.f32(float -0.000000e+00, float [[X:%.*]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
; CHECK-NEXT: [[COULD_BE_NAN:%.*]] = call ninf float @llvm.experimental.constrained.fadd.f32(float [[T]], float [[X]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
; CHECK-NEXT: ret float [[COULD_BE_NAN]]
;
%t = call nnan float @llvm.experimental.constrained.fsub.f32(float -0.0, float %x, metadata !"round.tonearest", metadata !"fpexcept.ignore")
%could_be_nan = call ninf float @llvm.experimental.constrained.fadd.f32(float %t, float %x, metadata !"round.tonearest", metadata !"fpexcept.ignore")
ret float %could_be_nan
}
define float @fadd_unary_fneg_nan(float %x) #0 {
; CHECK-LABEL: @fadd_unary_fneg_nan(
; CHECK-NEXT: [[T:%.*]] = fneg nnan float [[X:%.*]]
; CHECK-NEXT: [[COULD_BE_NAN:%.*]] = call ninf float @llvm.experimental.constrained.fadd.f32(float [[T]], float [[X]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
; CHECK-NEXT: ret float [[COULD_BE_NAN]]
;
%t = fneg nnan float %x
%could_be_nan = call ninf float @llvm.experimental.constrained.fadd.f32(float %t, float %x, metadata !"round.tonearest", metadata !"fpexcept.ignore")
ret float %could_be_nan
}
define float @fadd_binary_fneg_nan_commute(float %x) #0 {
; CHECK-LABEL: @fadd_binary_fneg_nan_commute(
; CHECK-NEXT: [[T:%.*]] = call nnan ninf float @llvm.experimental.constrained.fsub.f32(float -0.000000e+00, float [[X:%.*]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
; CHECK-NEXT: [[COULD_BE_NAN:%.*]] = call float @llvm.experimental.constrained.fadd.f32(float [[X]], float [[T]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
; CHECK-NEXT: ret float [[COULD_BE_NAN]]
;
%t = call nnan ninf float @llvm.experimental.constrained.fsub.f32(float -0.0, float %x, metadata !"round.tonearest", metadata !"fpexcept.ignore")
%could_be_nan = call float @llvm.experimental.constrained.fadd.f32(float %x, float %t, metadata !"round.tonearest", metadata !"fpexcept.ignore")
ret float %could_be_nan
}
define float @fadd_unary_fneg_nan_commute(float %x) #0 {
; CHECK-LABEL: @fadd_unary_fneg_nan_commute(
; CHECK-NEXT: [[T:%.*]] = fneg nnan ninf float [[X:%.*]]
; CHECK-NEXT: [[COULD_BE_NAN:%.*]] = call float @llvm.experimental.constrained.fadd.f32(float [[X]], float [[T]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
; CHECK-NEXT: ret float [[COULD_BE_NAN]]
;
%t = fneg nnan ninf float %x
%could_be_nan = call float @llvm.experimental.constrained.fadd.f32(float %x, float %t, metadata !"round.tonearest", metadata !"fpexcept.ignore")
ret float %could_be_nan
}
; X + (0.0 - X) --> 0.0 (with nnan on the fadd)
define float @fadd_fsub_nnan_ninf(float %x) #0 {
; CHECK-LABEL: @fadd_fsub_nnan_ninf(
; CHECK-NEXT: [[SUB:%.*]] = call nnan ninf float @llvm.experimental.constrained.fsub.f32(float 0.000000e+00, float [[X:%.*]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
; CHECK-NEXT: [[ZERO:%.*]] = call nnan ninf float @llvm.experimental.constrained.fadd.f32(float [[X]], float [[SUB]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
; CHECK-NEXT: ret float [[ZERO]]
;
%sub = call nnan ninf float @llvm.experimental.constrained.fsub.f32(float 0.0, float %x, metadata !"round.tonearest", metadata !"fpexcept.ignore")
%zero = call nnan ninf float @llvm.experimental.constrained.fadd.f32(float %x, float %sub, metadata !"round.tonearest", metadata !"fpexcept.ignore")
ret float %zero
}
; (0.0 - X) + X --> 0.0 (with nnan on the fadd)
define <2 x float> @fadd_fsub_nnan_ninf_commute_vec(<2 x float> %x) #0 {
; CHECK-LABEL: @fadd_fsub_nnan_ninf_commute_vec(
; 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")
; 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")
; CHECK-NEXT: ret <2 x float> [[ZERO]]
;
%sub = call <2 x float> @llvm.experimental.constrained.fsub.v2f32(<2 x float> zeroinitializer, <2 x float> %x, metadata !"round.tonearest", metadata !"fpexcept.ignore")
%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")
ret <2 x float> %zero
}
; 'ninf' is not required because 'nnan' allows us to assume
; that X is not INF or -INF (adding opposite INFs would be NaN).
define float @fadd_fsub_nnan(float %x) #0 {
; CHECK-LABEL: @fadd_fsub_nnan(
; CHECK-NEXT: [[SUB:%.*]] = call float @llvm.experimental.constrained.fsub.f32(float 0.000000e+00, float [[X:%.*]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
; CHECK-NEXT: [[ZERO:%.*]] = call nnan float @llvm.experimental.constrained.fadd.f32(float [[SUB]], float [[X]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
; CHECK-NEXT: ret float [[ZERO]]
;
%sub = call float @llvm.experimental.constrained.fsub.f32(float 0.0, float %x, metadata !"round.tonearest", metadata !"fpexcept.ignore")
%zero = call nnan float @llvm.experimental.constrained.fadd.f32(float %sub, float %x, metadata !"round.tonearest", metadata !"fpexcept.ignore")
ret float %zero
}
; fsub nnan x, x ==> 0.0
define float @fsub_x_x(float %a) #0 {
; X - X ==> 0
; CHECK-LABEL: @fsub_x_x(
; CHECK-NEXT: [[NO_ZERO1:%.*]] = call ninf float @llvm.experimental.constrained.fsub.f32(float [[A:%.*]], float [[A]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
; CHECK-NEXT: [[NO_ZERO2:%.*]] = call float @llvm.experimental.constrained.fsub.f32(float [[A]], float [[A]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
; CHECK-NEXT: [[NO_ZERO:%.*]] = call float @llvm.experimental.constrained.fadd.f32(float [[NO_ZERO1]], float [[NO_ZERO2]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
; CHECK-NEXT: ret float [[NO_ZERO]]
;
%zero1 = call nnan float @llvm.experimental.constrained.fsub.f32(float %a, float %a, metadata !"round.tonearest", metadata !"fpexcept.ignore")
; Dont fold
%no_zero1 = call ninf float @llvm.experimental.constrained.fsub.f32(float %a, float %a, metadata !"round.tonearest", metadata !"fpexcept.ignore")
%no_zero2 = call float @llvm.experimental.constrained.fsub.f32(float %a, float %a, metadata !"round.tonearest", metadata !"fpexcept.ignore")
%no_zero = call float @llvm.experimental.constrained.fadd.f32(float %no_zero1, float %no_zero2, metadata !"round.tonearest", metadata !"fpexcept.ignore")
; Should get folded
%ret = call nsz float @llvm.experimental.constrained.fadd.f32(float %no_zero, float %zero1, metadata !"round.tonearest", metadata !"fpexcept.ignore")
ret float %ret
}
; fsub nsz 0.0, (fsub 0.0, X) ==> X
define float @fsub_0_0_x(float %a) #0 {
; CHECK-LABEL: @fsub_0_0_x(
; CHECK-NEXT: [[T1:%.*]] = call float @llvm.experimental.constrained.fsub.f32(float 0.000000e+00, float [[A:%.*]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
; CHECK-NEXT: [[RET:%.*]] = call nsz float @llvm.experimental.constrained.fsub.f32(float 0.000000e+00, float [[T1]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
; CHECK-NEXT: ret float [[RET]]
;
%t1 = call float @llvm.experimental.constrained.fsub.f32(float 0.0, float %a, metadata !"round.tonearest", metadata !"fpexcept.ignore")
%ret = call nsz float @llvm.experimental.constrained.fsub.f32(float 0.0, float %t1, metadata !"round.tonearest", metadata !"fpexcept.ignore")
ret float %ret
}
; fsub nsz 0.0, (fneg X) ==> X
define float @fneg_x(float %a) #0 {
; CHECK-LABEL: @fneg_x(
; CHECK-NEXT: ret float [[A:%.*]]
;
%t1 = fneg float %a
%ret = call nsz float @llvm.experimental.constrained.fsub.f32(float 0.0, float %t1, metadata !"round.tonearest", metadata !"fpexcept.ignore")
ret float %ret
}
define <2 x float> @fsub_0_0_x_vec_undef1(<2 x float> %a) #0 {
; CHECK-LABEL: @fsub_0_0_x_vec_undef1(
; 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")
; 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")
; CHECK-NEXT: ret <2 x float> [[RET]]
;
%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")
%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")
ret <2 x float> %ret
}
define <2 x float> @fneg_x_vec_undef1(<2 x float> %a) #0 {
; CHECK-LABEL: @fneg_x_vec_undef1(
; CHECK-NEXT: ret <2 x float> [[A:%.*]]
;
%t1 = fneg <2 x float> %a
%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")
ret <2 x float> %ret
}
define <2 x float> @fsub_0_0_x_vec_undef2(<2 x float> %a) #0 {
; CHECK-LABEL: @fsub_0_0_x_vec_undef2(
; 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")
; 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")
; CHECK-NEXT: ret <2 x float> [[RET]]
;
%t1 = call <2 x float> @llvm.experimental.constrained.fsub.v2f32(<2 x float> zeroinitializer, <2 x float> %a, metadata !"round.tonearest", metadata !"fpexcept.ignore")
%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")
ret <2 x float> %ret
}
; fadd nsz X, 0 ==> X
define <2 x float> @fadd_zero_nsz_vec(<2 x float> %x) #0 {
; CHECK-LABEL: @fadd_zero_nsz_vec(
; CHECK-NEXT: ret <2 x float> [[X:%.*]]
;
%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")
ret <2 x float> %r
}
define <2 x float> @fadd_zero_nsz_vec_undef(<2 x float> %x) #0 {
; CHECK-LABEL: @fadd_zero_nsz_vec_undef(
; CHECK-NEXT: ret <2 x float> [[X:%.*]]
;
%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")
ret <2 x float> %r
}
define float @nofold_fadd_x_0(float %a) #0 {
; Dont fold
; CHECK-LABEL: @nofold_fadd_x_0(
; CHECK-NEXT: [[NO_ZERO1:%.*]] = call ninf float @llvm.experimental.constrained.fadd.f32(float [[A:%.*]], float 0.000000e+00, metadata !"round.tonearest", metadata !"fpexcept.ignore")
; CHECK-NEXT: [[NO_ZERO2:%.*]] = call nnan float @llvm.experimental.constrained.fadd.f32(float [[A]], float 0.000000e+00, metadata !"round.tonearest", metadata !"fpexcept.ignore")
; CHECK-NEXT: [[NO_ZERO:%.*]] = call float @llvm.experimental.constrained.fadd.f32(float [[NO_ZERO1]], float [[NO_ZERO2]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
; CHECK-NEXT: ret float [[NO_ZERO]]
;
%no_zero1 = call ninf float @llvm.experimental.constrained.fadd.f32(float %a, float 0.0, metadata !"round.tonearest", metadata !"fpexcept.ignore")
%no_zero2 = call nnan float @llvm.experimental.constrained.fadd.f32(float %a, float 0.0, metadata !"round.tonearest", metadata !"fpexcept.ignore")
%no_zero = call float @llvm.experimental.constrained.fadd.f32(float %no_zero1, float %no_zero2, metadata !"round.tonearest", metadata !"fpexcept.ignore")
ret float %no_zero
}
define float @fold_fadd_nsz_x_0(float %a) #0 {
; CHECK-LABEL: @fold_fadd_nsz_x_0(
; CHECK-NEXT: ret float [[A:%.*]]
;
%add = call nsz float @llvm.experimental.constrained.fadd.f32(float %a, float 0.0, metadata !"round.tonearest", metadata !"fpexcept.ignore")
ret float %add
}
; 'nsz' does not guarantee that -0.0 does not occur, so this does not simplify.
define float @fold_fadd_cannot_be_neg0_nsz_src_x_0(float %a, float %b) #0 {
; CHECK-LABEL: @fold_fadd_cannot_be_neg0_nsz_src_x_0(
; CHECK-NEXT: [[NSZ:%.*]] = call nsz float @llvm.experimental.constrained.fmul.f32(float [[A:%.*]], float [[B:%.*]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
; CHECK-NEXT: [[ADD:%.*]] = call float @llvm.experimental.constrained.fadd.f32(float [[NSZ]], float 0.000000e+00, metadata !"round.tonearest", metadata !"fpexcept.ignore")
; CHECK-NEXT: ret float [[ADD]]
;
%nsz = call nsz float @llvm.experimental.constrained.fmul.f32(float %a, float %b, metadata !"round.tonearest", metadata !"fpexcept.ignore")
%add = call float @llvm.experimental.constrained.fadd.f32(float %nsz, float 0.0, metadata !"round.tonearest", metadata !"fpexcept.ignore")
ret float %add
}
define float @fold_fadd_cannot_be_neg0_fabs_src_x_0(float %a) #0 {
; CHECK-LABEL: @fold_fadd_cannot_be_neg0_fabs_src_x_0(
; CHECK-NEXT: [[FABS:%.*]] = call float @llvm.fabs.f32(float [[A:%.*]]) #[[ATTR0:[0-9]+]]
; CHECK-NEXT: ret float [[FABS]]
;
%fabs = call float @llvm.fabs.f32(float %a) #0
%add = call float @llvm.experimental.constrained.fadd.f32(float %fabs, float 0.0, metadata !"round.tonearest", metadata !"fpexcept.ignore")
ret float %add
}
; 'nsz' does not guarantee that -0.0 does not occur, so this does not simplify.
define float @fold_fadd_cannot_be_neg0_sqrt_nsz_src_x_0(float %a, float %b) #0 {
; CHECK-LABEL: @fold_fadd_cannot_be_neg0_sqrt_nsz_src_x_0(
; CHECK-NEXT: [[NSZ:%.*]] = call nsz float @llvm.experimental.constrained.fmul.f32(float [[A:%.*]], float [[B:%.*]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
; CHECK-NEXT: [[SQRT:%.*]] = call float @llvm.experimental.constrained.sqrt.f32(float [[NSZ]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
; CHECK-NEXT: [[ADD:%.*]] = call float @llvm.experimental.constrained.fadd.f32(float [[SQRT]], float 0.000000e+00, metadata !"round.tonearest", metadata !"fpexcept.ignore")
; CHECK-NEXT: ret float [[ADD]]
;
%nsz = call nsz float @llvm.experimental.constrained.fmul.f32(float %a, float %b, metadata !"round.tonearest", metadata !"fpexcept.ignore")
%sqrt = call float @llvm.experimental.constrained.sqrt.f32(float %nsz, metadata !"round.tonearest", metadata !"fpexcept.ignore")
%add = call float @llvm.experimental.constrained.fadd.f32(float %sqrt, float 0.0, metadata !"round.tonearest", metadata !"fpexcept.ignore")
ret float %add
}
; 'nsz' does not guarantee that -0.0 does not occur, so this does not simplify.
define float @fold_fadd_cannot_be_neg0_canonicalize_nsz_src_x_0(float %a, float %b) #0 {
; CHECK-LABEL: @fold_fadd_cannot_be_neg0_canonicalize_nsz_src_x_0(
; CHECK-NEXT: [[NSZ:%.*]] = call nsz float @llvm.experimental.constrained.fmul.f32(float [[A:%.*]], float [[B:%.*]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
; CHECK-NEXT: [[CANON:%.*]] = call float @llvm.canonicalize.f32(float [[NSZ]]) #[[ATTR0]]
; CHECK-NEXT: [[ADD:%.*]] = call float @llvm.experimental.constrained.fadd.f32(float [[CANON]], float 0.000000e+00, metadata !"round.tonearest", metadata !"fpexcept.ignore")
; CHECK-NEXT: ret float [[ADD]]
;
%nsz = call nsz float @llvm.experimental.constrained.fmul.f32(float %a, float %b, metadata !"round.tonearest", metadata !"fpexcept.ignore")
%canon = call float @llvm.canonicalize.f32(float %nsz) #0
%add = call float @llvm.experimental.constrained.fadd.f32(float %canon, float 0.0, metadata !"round.tonearest", metadata !"fpexcept.ignore")
ret float %add
}
; fdiv nsz nnan 0, X ==> 0
; 0 / X -> 0
define double @fdiv_zero_by_x(double %x) #0 {
; CHECK-LABEL: @fdiv_zero_by_x(
; CHECK-NEXT: ret double 0.000000e+00
;
%r = call nnan nsz double @llvm.experimental.constrained.fdiv.f64(double 0.0, double %x, metadata !"round.tonearest", metadata !"fpexcept.ignore")
ret double %r
}
define <2 x double> @fdiv_zero_by_x_vec_undef(<2 x double> %x) #0 {
; CHECK-LABEL: @fdiv_zero_by_x_vec_undef(
; CHECK-NEXT: ret <2 x double> zeroinitializer
;
%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")
ret <2 x double> %r
}
; 0 % X -> 0
; nsz is not necessary - frem result always has the sign of the dividend
define double @frem_zero_by_x(double %x) #0 {
; CHECK-LABEL: @frem_zero_by_x(
; CHECK-NEXT: ret double 0.000000e+00
;
%r = call nnan double @llvm.experimental.constrained.frem.f64(double 0.0, double %x, metadata !"round.tonearest", metadata !"fpexcept.ignore")
ret double %r
}
define <2 x double> @frem_poszero_by_x_vec_undef(<2 x double> %x) #0 {
; CHECK-LABEL: @frem_poszero_by_x_vec_undef(
; CHECK-NEXT: ret <2 x double> zeroinitializer
;
%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")
ret <2 x double> %r
}
; -0 % X -> -0
; nsz is not necessary - frem result always has the sign of the dividend
define double @frem_negzero_by_x(double %x) #0 {
; CHECK-LABEL: @frem_negzero_by_x(
; CHECK-NEXT: ret double -0.000000e+00
;
%r = call nnan double @llvm.experimental.constrained.frem.f64(double -0.0, double %x, metadata !"round.tonearest", metadata !"fpexcept.ignore")
ret double %r
}
define <2 x double> @frem_negzero_by_x_vec_undef(<2 x double> %x) #0 {
; CHECK-LABEL: @frem_negzero_by_x_vec_undef(
; CHECK-NEXT: ret <2 x double> <double -0.000000e+00, double -0.000000e+00>
;
%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")
ret <2 x double> %r
}
define float @fdiv_self(float %f) #0 {
; CHECK-LABEL: @fdiv_self(
; CHECK-NEXT: ret float 1.000000e+00
;
%div = call nnan float @llvm.experimental.constrained.fdiv.f32(float %f, float %f, metadata !"round.tonearest", metadata !"fpexcept.ignore")
ret float %div
}
define float @fdiv_self_invalid(float %f) #0 {
; CHECK-LABEL: @fdiv_self_invalid(
; CHECK-NEXT: [[DIV:%.*]] = call float @llvm.experimental.constrained.fdiv.f32(float [[F:%.*]], float [[F]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
; CHECK-NEXT: ret float [[DIV]]
;
%div = call float @llvm.experimental.constrained.fdiv.f32(float %f, float %f, metadata !"round.tonearest", metadata !"fpexcept.ignore")
ret float %div
}
define float @fdiv_neg1(float %f) #0 {
; CHECK-LABEL: @fdiv_neg1(
; CHECK-NEXT: [[NEG:%.*]] = call fast float @llvm.experimental.constrained.fsub.f32(float -0.000000e+00, float [[F:%.*]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
; CHECK-NEXT: [[DIV:%.*]] = call nnan float @llvm.experimental.constrained.fdiv.f32(float [[NEG]], float [[F]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
; CHECK-NEXT: ret float [[DIV]]
;
%neg = call fast float @llvm.experimental.constrained.fsub.f32(float -0.000000e+00, float %f, metadata !"round.tonearest", metadata !"fpexcept.ignore")
%div = call nnan float @llvm.experimental.constrained.fdiv.f32(float %neg, float %f, metadata !"round.tonearest", metadata !"fpexcept.ignore")
ret float %div
}
define float @fdiv_neg2(float %f) #0 {
; CHECK-LABEL: @fdiv_neg2(
; CHECK-NEXT: [[NEG:%.*]] = call fast float @llvm.experimental.constrained.fsub.f32(float 0.000000e+00, float [[F:%.*]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
; CHECK-NEXT: [[DIV:%.*]] = call nnan float @llvm.experimental.constrained.fdiv.f32(float [[NEG]], float [[F]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
; CHECK-NEXT: ret float [[DIV]]
;
%neg = call fast float @llvm.experimental.constrained.fsub.f32(float 0.000000e+00, float %f, metadata !"round.tonearest", metadata !"fpexcept.ignore")
%div = call nnan float @llvm.experimental.constrained.fdiv.f32(float %neg, float %f, metadata !"round.tonearest", metadata !"fpexcept.ignore")
ret float %div
}
define float @fdiv_neg_invalid(float %f) #0 {
; CHECK-LABEL: @fdiv_neg_invalid(
; CHECK-NEXT: [[NEG:%.*]] = call fast float @llvm.experimental.constrained.fsub.f32(float -0.000000e+00, float [[F:%.*]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
; CHECK-NEXT: [[DIV:%.*]] = call float @llvm.experimental.constrained.fdiv.f32(float [[NEG]], float [[F]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
; CHECK-NEXT: ret float [[DIV]]
;
%neg = call fast float @llvm.experimental.constrained.fsub.f32(float -0.000000e+00, float %f, metadata !"round.tonearest", metadata !"fpexcept.ignore")
%div = call float @llvm.experimental.constrained.fdiv.f32(float %neg, float %f, metadata !"round.tonearest", metadata !"fpexcept.ignore")
ret float %div
}
define float @fdiv_neg_swapped1(float %f) #0 {
; CHECK-LABEL: @fdiv_neg_swapped1(
; CHECK-NEXT: [[NEG:%.*]] = call fast float @llvm.experimental.constrained.fsub.f32(float -0.000000e+00, float [[F:%.*]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
; CHECK-NEXT: [[DIV:%.*]] = call nnan float @llvm.experimental.constrained.fdiv.f32(float [[F]], float [[NEG]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
; CHECK-NEXT: ret float [[DIV]]
;
%neg = call fast float @llvm.experimental.constrained.fsub.f32(float -0.000000e+00, float %f, metadata !"round.tonearest", metadata !"fpexcept.ignore")
%div = call nnan float @llvm.experimental.constrained.fdiv.f32(float %f, float %neg, metadata !"round.tonearest", metadata !"fpexcept.ignore")
ret float %div
}
define float @fdiv_neg_swapped2(float %f) #0 {
; CHECK-LABEL: @fdiv_neg_swapped2(
; CHECK-NEXT: [[NEG:%.*]] = call float @llvm.experimental.constrained.fsub.f32(float 0.000000e+00, float [[F:%.*]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
; CHECK-NEXT: [[DIV:%.*]] = call nnan float @llvm.experimental.constrained.fdiv.f32(float [[F]], float [[NEG]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
; CHECK-NEXT: ret float [[DIV]]
;
%neg = call float @llvm.experimental.constrained.fsub.f32(float 0.000000e+00, float %f, metadata !"round.tonearest", metadata !"fpexcept.ignore")
%div = call nnan float @llvm.experimental.constrained.fdiv.f32(float %f, float %neg, metadata !"round.tonearest", metadata !"fpexcept.ignore")
ret float %div
}
define <2 x float> @fdiv_neg_vec_undef_elt(<2 x float> %f) #0 {
; CHECK-LABEL: @fdiv_neg_vec_undef_elt(
; 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")
; 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")
; CHECK-NEXT: ret <2 x float> [[DIV]]
;
%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")
%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")
ret <2 x float> %div
}
; PR21126: http://llvm.org/bugs/show_bug.cgi?id=21126
; With loose math, sqrt(X) * sqrt(X) is just X.
declare double @llvm.sqrt.f64(double)
define double @sqrt_squared(double %f) #0 {
; CHECK-LABEL: @sqrt_squared(
; CHECK-NEXT: [[SQRT:%.*]] = call double @llvm.experimental.constrained.sqrt.f64(double [[F:%.*]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
; CHECK-NEXT: [[MUL:%.*]] = call reassoc nnan nsz double @llvm.experimental.constrained.fmul.f64(double [[SQRT]], double [[SQRT]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
; CHECK-NEXT: ret double [[MUL]]
;
%sqrt = call double @llvm.experimental.constrained.sqrt.f64(double %f, metadata !"round.tonearest", metadata !"fpexcept.ignore")
%mul = call reassoc nnan nsz double @llvm.experimental.constrained.fmul.f64(double %sqrt, double %sqrt, metadata !"round.tonearest", metadata !"fpexcept.ignore")
ret double %mul
}
; Negative tests for the above transform: we need all 3 of those flags.
define double @sqrt_squared_not_fast_enough1(double %f) #0 {
; CHECK-LABEL: @sqrt_squared_not_fast_enough1(
; CHECK-NEXT: [[SQRT:%.*]] = call double @llvm.experimental.constrained.sqrt.f64(double [[F:%.*]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
; CHECK-NEXT: [[MUL:%.*]] = call nnan nsz double @llvm.experimental.constrained.fmul.f64(double [[SQRT]], double [[SQRT]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
; CHECK-NEXT: ret double [[MUL]]
;
%sqrt = call double @llvm.experimental.constrained.sqrt.f64(double %f, metadata !"round.tonearest", metadata !"fpexcept.ignore")
%mul = call nnan nsz double @llvm.experimental.constrained.fmul.f64(double %sqrt, double %sqrt, metadata !"round.tonearest", metadata !"fpexcept.ignore")
ret double %mul
}
define double @sqrt_squared_not_fast_enough2(double %f) #0 {
; CHECK-LABEL: @sqrt_squared_not_fast_enough2(
; CHECK-NEXT: [[SQRT:%.*]] = call double @llvm.experimental.constrained.sqrt.f64(double [[F:%.*]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
; CHECK-NEXT: [[MUL:%.*]] = call reassoc nnan double @llvm.experimental.constrained.fmul.f64(double [[SQRT]], double [[SQRT]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
; CHECK-NEXT: ret double [[MUL]]
;
%sqrt = call double @llvm.experimental.constrained.sqrt.f64(double %f, metadata !"round.tonearest", metadata !"fpexcept.ignore")
%mul = call reassoc nnan double @llvm.experimental.constrained.fmul.f64(double %sqrt, double %sqrt, metadata !"round.tonearest", metadata !"fpexcept.ignore")
ret double %mul
}
define double @sqrt_squared_not_fast_enough3(double %f) #0 {
; CHECK-LABEL: @sqrt_squared_not_fast_enough3(
; CHECK-NEXT: [[SQRT:%.*]] = call double @llvm.experimental.constrained.sqrt.f64(double [[F:%.*]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
; CHECK-NEXT: [[MUL:%.*]] = call reassoc nsz double @llvm.experimental.constrained.fmul.f64(double [[SQRT]], double [[SQRT]], metadata !"round.tonearest", metadata !"fpexcept.ignore")
; CHECK-NEXT: ret double [[MUL]]
;
%sqrt = call double @llvm.experimental.constrained.sqrt.f64(double %f, metadata !"round.tonearest", metadata !"fpexcept.ignore")
%mul = call reassoc nsz double @llvm.experimental.constrained.fmul.f64(double %sqrt, double %sqrt, metadata !"round.tonearest", metadata !"fpexcept.ignore")
ret double %mul
}
declare float @llvm.fabs.f32(float)
declare float @llvm.experimental.constrained.sqrt.f32(float, metadata, metadata)
declare double @llvm.experimental.constrained.sqrt.f64(double, metadata, metadata)
declare float @llvm.canonicalize.f32(float)
declare float @llvm.experimental.constrained.fadd.f32(float, float, metadata, metadata)
declare <2 x float> @llvm.experimental.constrained.fadd.v2f32(<2 x float>, <2 x float>, metadata, metadata)
declare float @llvm.experimental.constrained.fsub.f32(float, float, metadata, metadata)
declare <2 x float> @llvm.experimental.constrained.fsub.v2f32(<2 x float>, <2 x float>, metadata, metadata)
declare float @llvm.experimental.constrained.fmul.f32(float, float, metadata, metadata)
declare double @llvm.experimental.constrained.fmul.f64(double, double, metadata, metadata)
declare <2 x float> @llvm.experimental.constrained.fmul.v2f32(<2 x float>, <2 x float>, metadata, metadata)
declare float @llvm.experimental.constrained.fdiv.f32(float, float, metadata, metadata)
declare double @llvm.experimental.constrained.fdiv.f64(double, double, metadata, metadata)
declare <2 x float> @llvm.experimental.constrained.fdiv.v2f32(<2 x float>, <2 x float>, metadata, metadata)
declare <2 x double> @llvm.experimental.constrained.fdiv.v2f64(<2 x double>, <2 x double>, metadata, metadata)
declare double @llvm.experimental.constrained.frem.f64(double, double, metadata, metadata)
declare <2 x double> @llvm.experimental.constrained.frem.v2f64(<2 x double>, <2 x double>, metadata, metadata)
attributes #0 = { strictfp }
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