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llvm-project/llvm/test/Transforms/InstSimplify/floating-point-compare.ll
Sanjay Patel 73f5a855b3 [InstSimplify] enhance fcmp fold with never-nan operand 
This is another step towards correcting our usage of fast-math-flags when applied on an fcmp.
In this case, we are checking for 'nnan' on the fcmp itself rather than the operand of
the fcmp. But I'm leaving that clause in until we're more confident that we can stop
relying on fcmp's FMF.

By using the more general "isKnownNeverNaN()", we gain a simplification shown on the
tests with 'uitofp' regardless of the FMF on the fcmp (uitofp never produces a NaN).
On the tests with 'fabs', we are now relying on the FMF for the call fabs instruction
in addition to the FMF on the fcmp.

This is a continuation of D62979 / rL362879.

llvm-svn: 362903
2019-06-09 13:48:59 +00:00

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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -instsimplify -S | FileCheck %s
; Infinity
define i1 @inf0(double %arg) {
; CHECK-LABEL: @inf0(
; CHECK-NEXT: ret i1 false
;
%tmp = fcmp ogt double %arg, 0x7FF0000000000000
ret i1 %tmp
}
define i1 @inf1(double %arg) {
; CHECK-LABEL: @inf1(
; CHECK-NEXT: ret i1 true
;
%tmp = fcmp ule double %arg, 0x7FF0000000000000
ret i1 %tmp
}
; Negative infinity
define i1 @ninf0(double %arg) {
; CHECK-LABEL: @ninf0(
; CHECK-NEXT: ret i1 false
;
%tmp = fcmp olt double %arg, 0xFFF0000000000000
ret i1 %tmp
}
define i1 @ninf1(double %arg) {
; CHECK-LABEL: @ninf1(
; CHECK-NEXT: ret i1 true
;
%tmp = fcmp uge double %arg, 0xFFF0000000000000
ret i1 %tmp
}
; NaNs
define i1 @nan0(double %arg) {
; CHECK-LABEL: @nan0(
; CHECK-NEXT: ret i1 false
;
%tmp = fcmp ord double %arg, 0x7FF00000FFFFFFFF
ret i1 %tmp
}
define i1 @nan1(double %arg) {
; CHECK-LABEL: @nan1(
; CHECK-NEXT: ret i1 false
;
%tmp = fcmp oeq double %arg, 0x7FF00000FFFFFFFF
ret i1 %tmp
}
define i1 @nan2(double %arg) {
; CHECK-LABEL: @nan2(
; CHECK-NEXT: ret i1 false
;
%tmp = fcmp olt double %arg, 0x7FF00000FFFFFFFF
ret i1 %tmp
}
define i1 @nan3(double %arg) {
; CHECK-LABEL: @nan3(
; CHECK-NEXT: ret i1 true
;
%tmp = fcmp uno double %arg, 0x7FF00000FFFFFFFF
ret i1 %tmp
}
define i1 @nan4(double %arg) {
; CHECK-LABEL: @nan4(
; CHECK-NEXT: ret i1 true
;
%tmp = fcmp une double %arg, 0x7FF00000FFFFFFFF
ret i1 %tmp
}
define i1 @nan5(double %arg) {
; CHECK-LABEL: @nan5(
; CHECK-NEXT: ret i1 true
;
%tmp = fcmp ult double %arg, 0x7FF00000FFFFFFFF
ret i1 %tmp
}
; Negative NaN.
define i1 @nnan0(double %arg) {
; CHECK-LABEL: @nnan0(
; CHECK-NEXT: ret i1 false
;
%tmp = fcmp ord double %arg, 0xFFF00000FFFFFFFF
ret i1 %tmp
}
define i1 @nnan1(double %arg) {
; CHECK-LABEL: @nnan1(
; CHECK-NEXT: ret i1 false
;
%tmp = fcmp oeq double %arg, 0xFFF00000FFFFFFFF
ret i1 %tmp
}
define i1 @nnan2(double %arg) {
; CHECK-LABEL: @nnan2(
; CHECK-NEXT: ret i1 false
;
%tmp = fcmp olt double %arg, 0xFFF00000FFFFFFFF
ret i1 %tmp
}
define i1 @nnan3(double %arg) {
; CHECK-LABEL: @nnan3(
; CHECK-NEXT: ret i1 true
;
%tmp = fcmp uno double %arg, 0xFFF00000FFFFFFFF
ret i1 %tmp
}
define i1 @nnan4(double %arg) {
; CHECK-LABEL: @nnan4(
; CHECK-NEXT: ret i1 true
;
%tmp = fcmp une double %arg, 0xFFF00000FFFFFFFF
ret i1 %tmp
}
define i1 @nnan5(double %arg) {
; CHECK-LABEL: @nnan5(
; CHECK-NEXT: ret i1 true
;
%tmp = fcmp ult double %arg, 0xFFF00000FFFFFFFF
ret i1 %tmp
}
; Negative zero.
define i1 @nzero0() {
; CHECK-LABEL: @nzero0(
; CHECK-NEXT: ret i1 true
;
%tmp = fcmp oeq double 0.0, -0.0
ret i1 %tmp
}
define i1 @nzero1() {
; CHECK-LABEL: @nzero1(
; CHECK-NEXT: ret i1 false
;
%tmp = fcmp ogt double 0.0, -0.0
ret i1 %tmp
}
; No enlightenment here.
define i1 @one_with_self(double %arg) {
; CHECK-LABEL: @one_with_self(
; CHECK-NEXT: ret i1 false
;
%tmp = fcmp one double %arg, %arg
ret i1 %tmp
}
; These tests choose arbitrarily between float and double,
; and between uge and olt, to give reasonble coverage
; without combinatorial explosion.
declare half @llvm.fabs.f16(half)
declare float @llvm.fabs.f32(float)
declare double @llvm.fabs.f64(double)
declare <2 x float> @llvm.fabs.v2f32(<2 x float>)
declare <3 x float> @llvm.fabs.v3f32(<3 x float>)
declare <2 x double> @llvm.fabs.v2f64(<2 x double>)
declare float @llvm.sqrt.f32(float)
declare double @llvm.powi.f64(double,i32)
declare float @llvm.exp.f32(float)
declare float @llvm.minnum.f32(float, float)
declare <2 x float> @llvm.minnum.v2f32(<2 x float>, <2 x float>)
declare float @llvm.maxnum.f32(float, float)
declare <2 x float> @llvm.maxnum.v2f32(<2 x float>, <2 x float>)
declare float @llvm.maximum.f32(float, float)
declare double @llvm.exp2.f64(double)
declare float @llvm.fma.f32(float,float,float)
declare void @expect_equal(i1,i1)
define i1 @orderedLessZeroTree(float,float,float,float) {
; CHECK-LABEL: @orderedLessZeroTree(
; CHECK-NEXT: ret i1 true
;
%square = fmul float %0, %0
%abs = call float @llvm.fabs.f32(float %1)
%sqrt = call float @llvm.sqrt.f32(float %2)
%fma = call float @llvm.fma.f32(float %3, float %3, float %sqrt)
%div = fdiv float %square, %abs
%rem = frem float %sqrt, %fma
%add = fadd float %div, %rem
%uge = fcmp uge float %add, 0.000000e+00
ret i1 %uge
}
define i1 @orderedLessZeroExpExt(float) {
; CHECK-LABEL: @orderedLessZeroExpExt(
; CHECK-NEXT: ret i1 true
;
%a = call float @llvm.exp.f32(float %0)
%b = fpext float %a to double
%uge = fcmp uge double %b, 0.000000e+00
ret i1 %uge
}
define i1 @orderedLessZeroExp2Trunc(double) {
; CHECK-LABEL: @orderedLessZeroExp2Trunc(
; CHECK-NEXT: ret i1 false
;
%a = call double @llvm.exp2.f64(double %0)
%b = fptrunc double %a to float
%olt = fcmp olt float %b, 0.000000e+00
ret i1 %olt
}
define i1 @orderedLessZeroPowi(double,double) {
; CHECK-LABEL: @orderedLessZeroPowi(
; CHECK-NEXT: ret i1 false
;
; Even constant exponent
%a = call double @llvm.powi.f64(double %0, i32 2)
%square = fmul double %1, %1
; Odd constant exponent with provably non-negative base
%b = call double @llvm.powi.f64(double %square, i32 3)
%c = fadd double %a, %b
%olt = fcmp olt double %b, 0.000000e+00
ret i1 %olt
}
define i1 @UIToFP_is_nan_or_positive_or_zero(i32 %x) {
; CHECK-LABEL: @UIToFP_is_nan_or_positive_or_zero(
; CHECK-NEXT: ret i1 true
;
%a = uitofp i32 %x to float
%r = fcmp uge float %a, 0.000000e+00
ret i1 %r
}
define <2 x i1> @UIToFP_is_nan_or_positive_or_zero_vec(<2 x i32> %x) {
; CHECK-LABEL: @UIToFP_is_nan_or_positive_or_zero_vec(
; CHECK-NEXT: ret <2 x i1> <i1 true, i1 true>
;
%a = uitofp <2 x i32> %x to <2 x float>
%r = fcmp uge <2 x float> %a, zeroinitializer
ret <2 x i1> %r
}
define i1 @UIToFP_is_positive_or_zero(i32 %x) {
; CHECK-LABEL: @UIToFP_is_positive_or_zero(
; CHECK-NEXT: ret i1 true
;
%a = uitofp i32 %x to float
%r = fcmp oge float %a, 0.000000e+00
ret i1 %r
}
define <2 x i1> @UIToFP_is_positive_or_zero_vec(<2 x i32> %x) {
; CHECK-LABEL: @UIToFP_is_positive_or_zero_vec(
; CHECK-NEXT: ret <2 x i1> <i1 true, i1 true>
;
%a = uitofp <2 x i32> %x to <2 x float>
%r = fcmp oge <2 x float> %a, zeroinitializer
ret <2 x i1> %r
}
define i1 @UIToFP_nnan_is_positive_or_zero(i32 %x) {
; CHECK-LABEL: @UIToFP_nnan_is_positive_or_zero(
; CHECK-NEXT: ret i1 true
;
%a = uitofp i32 %x to float
%r = fcmp nnan oge float %a, 0.000000e+00
ret i1 %r
}
define <2 x i1> @UIToFP_nnan_is_positive_or_zero_vec(<2 x i32> %x) {
; CHECK-LABEL: @UIToFP_nnan_is_positive_or_zero_vec(
; CHECK-NEXT: ret <2 x i1> <i1 true, i1 true>
;
%a = uitofp <2 x i32> %x to <2 x float>
%r = fcmp nnan oge <2 x float> %a, zeroinitializer
ret <2 x i1> %r
}
define i1 @UIToFP_is_not_negative(i32 %x) {
; CHECK-LABEL: @UIToFP_is_not_negative(
; CHECK-NEXT: ret i1 false
;
%a = uitofp i32 %x to float
%r = fcmp olt float %a, 0.000000e+00
ret i1 %r
}
define <2 x i1> @UIToFP_is_not_negative_vec(<2 x i32> %x) {
; CHECK-LABEL: @UIToFP_is_not_negative_vec(
; CHECK-NEXT: ret <2 x i1> zeroinitializer
;
%a = uitofp <2 x i32> %x to <2 x float>
%r = fcmp olt <2 x float> %a, zeroinitializer
ret <2 x i1> %r
}
; No FMF are required for this transform.
define i1 @UIToFP_is_not_negative_or_nan(i32 %x) {
; CHECK-LABEL: @UIToFP_is_not_negative_or_nan(
; CHECK-NEXT: ret i1 false
;
%a = uitofp i32 %x to float
%r = fcmp ult float %a, 0.000000e+00
ret i1 %r
}
define <2 x i1> @UIToFP_is_not_negative_or_nan_vec(<2 x i32> %x) {
; CHECK-LABEL: @UIToFP_is_not_negative_or_nan_vec(
; CHECK-NEXT: ret <2 x i1> zeroinitializer
;
%a = uitofp <2 x i32> %x to <2 x float>
%r = fcmp ult <2 x float> %a, zeroinitializer
ret <2 x i1> %r
}
define i1 @UIToFP_nnan_is_not_negative(i32 %x) {
; CHECK-LABEL: @UIToFP_nnan_is_not_negative(
; CHECK-NEXT: ret i1 false
;
%a = uitofp i32 %x to float
%r = fcmp nnan ult float %a, 0.000000e+00
ret i1 %r
}
define <2 x i1> @UIToFP_nnan_is_not_negative_vec(<2 x i32> %x) {
; CHECK-LABEL: @UIToFP_nnan_is_not_negative_vec(
; CHECK-NEXT: ret <2 x i1> zeroinitializer
;
%a = uitofp <2 x i32> %x to <2 x float>
%r = fcmp nnan ult <2 x float> %a, zeroinitializer
ret <2 x i1> %r
}
define i1 @fabs_is_nan_or_positive_or_zero(double %x) {
; CHECK-LABEL: @fabs_is_nan_or_positive_or_zero(
; CHECK-NEXT: ret i1 true
;
%fabs = tail call double @llvm.fabs.f64(double %x)
%cmp = fcmp uge double %fabs, 0.0
ret i1 %cmp
}
define <2 x i1> @fabs_is_nan_or_positive_or_zero_vec(<2 x double> %x) {
; CHECK-LABEL: @fabs_is_nan_or_positive_or_zero_vec(
; CHECK-NEXT: ret <2 x i1> <i1 true, i1 true>
;
%fabs = tail call <2 x double> @llvm.fabs.v2f64(<2 x double> %x)
%cmp = fcmp uge <2 x double> %fabs, zeroinitializer
ret <2 x i1> %cmp
}
define i1 @fabs_nnan_is_positive_or_zero(double %x) {
; CHECK-LABEL: @fabs_nnan_is_positive_or_zero(
; CHECK-NEXT: ret i1 true
;
%fabs = tail call nnan double @llvm.fabs.f64(double %x)
%cmp = fcmp oge double %fabs, 0.0
ret i1 %cmp
}
define <2 x i1> @fabs_nnan_is_positive_or_zero_vec(<2 x double> %x) {
; CHECK-LABEL: @fabs_nnan_is_positive_or_zero_vec(
; CHECK-NEXT: ret <2 x i1> <i1 true, i1 true>
;
%fabs = tail call nnan <2 x double> @llvm.fabs.v2f64(<2 x double> %x)
%cmp = fcmp oge <2 x double> %fabs, zeroinitializer
ret <2 x i1> %cmp
}
define i1 @fabs_fcmp-nnan_is_positive_or_zero(double %x) {
; CHECK-LABEL: @fabs_fcmp-nnan_is_positive_or_zero(
; CHECK-NEXT: ret i1 true
;
%fabs = tail call double @llvm.fabs.f64(double %x)
%cmp = fcmp nnan oge double %fabs, 0.0
ret i1 %cmp
}
define <2 x i1> @fabs_fcmp-nnan_is_positive_or_zero_vec(<2 x double> %x) {
; CHECK-LABEL: @fabs_fcmp-nnan_is_positive_or_zero_vec(
; CHECK-NEXT: ret <2 x i1> <i1 true, i1 true>
;
%fabs = tail call <2 x double> @llvm.fabs.v2f64(<2 x double> %x)
%cmp = fcmp nnan oge <2 x double> %fabs, zeroinitializer
ret <2 x i1> %cmp
}
define i1 @fabs_is_not_negative(double %x) {
; CHECK-LABEL: @fabs_is_not_negative(
; CHECK-NEXT: ret i1 false
;
%fabs = tail call double @llvm.fabs.f64(double %x)
%cmp = fcmp olt double %fabs, 0.0
ret i1 %cmp
}
define <2 x i1> @fabs_is_not_negative_vec(<2 x double> %x) {
; CHECK-LABEL: @fabs_is_not_negative_vec(
; CHECK-NEXT: ret <2 x i1> zeroinitializer
;
%fabs = tail call <2 x double> @llvm.fabs.v2f64(<2 x double> %x)
%cmp = fcmp olt <2 x double> %fabs, zeroinitializer
ret <2 x i1> %cmp
}
define i1 @fabs_nnan_is_not_negative(double %x) {
; CHECK-LABEL: @fabs_nnan_is_not_negative(
; CHECK-NEXT: ret i1 false
;
%fabs = tail call nnan double @llvm.fabs.f64(double %x)
%cmp = fcmp ult double %fabs, 0.0
ret i1 %cmp
}
define <2 x i1> @fabs_nnan_is_not_negative_vec(<2 x double> %x) {
; CHECK-LABEL: @fabs_nnan_is_not_negative_vec(
; CHECK-NEXT: ret <2 x i1> zeroinitializer
;
%fabs = tail call nnan <2 x double> @llvm.fabs.v2f64(<2 x double> %x)
%cmp = fcmp ult <2 x double> %fabs, zeroinitializer
ret <2 x i1> %cmp
}
define i1 @fabs_fcmp-nnan_is_not_negative(double %x) {
; CHECK-LABEL: @fabs_fcmp-nnan_is_not_negative(
; CHECK-NEXT: ret i1 false
;
%fabs = tail call double @llvm.fabs.f64(double %x)
%cmp = fcmp nnan ult double %fabs, 0.0
ret i1 %cmp
}
define <2 x i1> @fabs_fcmp-nnan_is_not_negative_vec(<2 x double> %x) {
; CHECK-LABEL: @fabs_fcmp-nnan_is_not_negative_vec(
; CHECK-NEXT: ret <2 x i1> zeroinitializer
;
%fabs = tail call <2 x double> @llvm.fabs.v2f64(<2 x double> %x)
%cmp = fcmp nnan ult <2 x double> %fabs, zeroinitializer
ret <2 x i1> %cmp
}
define <2 x i1> @fabs_is_not_negative_negzero(<2 x float> %V) {
; CHECK-LABEL: @fabs_is_not_negative_negzero(
; CHECK-NEXT: ret <2 x i1> zeroinitializer
;
%abs = call <2 x float> @llvm.fabs.v2f32(<2 x float> %V)
%cmp = fcmp olt <2 x float> %abs, <float -0.0, float -0.0>
ret <2 x i1> %cmp
}
define <2 x i1> @fabs_is_not_negative_poszero(<2 x float> %V) {
; CHECK-LABEL: @fabs_is_not_negative_poszero(
; CHECK-NEXT: ret <2 x i1> zeroinitializer
;
%abs = call <2 x float> @llvm.fabs.v2f32(<2 x float> %V)
%cmp = fcmp olt <2 x float> %abs, <float 0.0, float 0.0>
ret <2 x i1> %cmp
}
define <2 x i1> @fabs_is_not_negative_anyzero(<2 x float> %V) {
; CHECK-LABEL: @fabs_is_not_negative_anyzero(
; CHECK-NEXT: ret <2 x i1> zeroinitializer
;
%abs = call <2 x float> @llvm.fabs.v2f32(<2 x float> %V)
%cmp = fcmp olt <2 x float> %abs, <float 0.0, float -0.0>
ret <2 x i1> %cmp
}
define <3 x i1> @fabs_is_not_negative_negzero_undef(<3 x float> %V) {
; CHECK-LABEL: @fabs_is_not_negative_negzero_undef(
; CHECK-NEXT: ret <3 x i1> zeroinitializer
;
%abs = call <3 x float> @llvm.fabs.v3f32(<3 x float> %V)
%cmp = fcmp olt <3 x float> %abs, <float -0.0, float -0.0, float undef>
ret <3 x i1> %cmp
}
define <3 x i1> @fabs_is_not_negative_poszero_undef(<3 x float> %V) {
; CHECK-LABEL: @fabs_is_not_negative_poszero_undef(
; CHECK-NEXT: ret <3 x i1> zeroinitializer
;
%abs = call <3 x float> @llvm.fabs.v3f32(<3 x float> %V)
%cmp = fcmp olt <3 x float> %abs, <float 0.0, float 0.0, float undef>
ret <3 x i1> %cmp
}
define <3 x i1> @fabs_is_not_negative_anyzero_undef(<3 x float> %V) {
; CHECK-LABEL: @fabs_is_not_negative_anyzero_undef(
; CHECK-NEXT: ret <3 x i1> zeroinitializer
;
%abs = call <3 x float> @llvm.fabs.v3f32(<3 x float> %V)
%cmp = fcmp olt <3 x float> %abs, <float 0.0, float -0.0, float undef>
ret <3 x i1> %cmp
}
define i1 @orderedLessZeroSelect(float, float) {
; CHECK-LABEL: @orderedLessZeroSelect(
; CHECK-NEXT: ret i1 true
;
%a = call float @llvm.exp.f32(float %0)
%b = call float @llvm.fabs.f32(float %1)
%c = fcmp olt float %0, %1
%d = select i1 %c, float %a, float %b
%e = fadd float %d, 1.0
%uge = fcmp uge float %e, 0.000000e+00
ret i1 %uge
}
define i1 @orderedLessZeroMinNum(float, float) {
; CHECK-LABEL: @orderedLessZeroMinNum(
; CHECK-NEXT: ret i1 true
;
%a = call float @llvm.exp.f32(float %0)
%b = call float @llvm.fabs.f32(float %1)
%c = call float @llvm.minnum.f32(float %a, float %b)
%uge = fcmp uge float %c, 0.000000e+00
ret i1 %uge
}
; PR37776: https://bugs.llvm.org/show_bug.cgi?id=37776
; exp() may return nan, leaving %1 as the unknown result, so we can't simplify.
define i1 @orderedLessZeroMaxNum(float, float) {
; CHECK-LABEL: @orderedLessZeroMaxNum(
; CHECK-NEXT: [[A:%.*]] = call float @llvm.exp.f32(float [[TMP0:%.*]])
; CHECK-NEXT: [[B:%.*]] = call float @llvm.maxnum.f32(float [[A]], float [[TMP1:%.*]])
; CHECK-NEXT: [[UGE:%.*]] = fcmp uge float [[B]], 0.000000e+00
; CHECK-NEXT: ret i1 [[UGE]]
;
%a = call float @llvm.exp.f32(float %0)
%b = call float @llvm.maxnum.f32(float %a, float %1)
%uge = fcmp uge float %b, 0.000000e+00
ret i1 %uge
}
; But using maximum, we can simplify, since the NaN would be propagated
define i1 @orderedLessZeroMaximum(float, float) {
; CHECK-LABEL: @orderedLessZeroMaximum(
; CHECK-NEXT: ret i1 true
;
%a = call float @llvm.exp.f32(float %0)
%b = call float @llvm.maximum.f32(float %a, float %1)
%uge = fcmp uge float %b, 0.000000e+00
ret i1 %uge
}
define i1 @minnum_non_nan(float %x) {
; CHECK-LABEL: @minnum_non_nan(
; CHECK-NEXT: ret i1 true
;
%min = call float @llvm.minnum.f32(float 0.5, float %x)
%cmp = fcmp ord float %min, 1.0
ret i1 %cmp
}
define i1 @maxnum_non_nan(float %x) {
; CHECK-LABEL: @maxnum_non_nan(
; CHECK-NEXT: ret i1 false
;
%min = call float @llvm.maxnum.f32(float %x, float 42.0)
%cmp = fcmp uno float %min, 12.0
ret i1 %cmp
}
; min(x, 0.5) == 1.0 --> false
define i1 @minnum_oeq_small_min_constant(float %x) {
; CHECK-LABEL: @minnum_oeq_small_min_constant(
; CHECK-NEXT: ret i1 false
;
%min = call float @llvm.minnum.f32(float %x, float 0.5)
%cmp = fcmp oeq float %min, 1.0
ret i1 %cmp
}
; min(x, 0.5) > 1.0 --> false
define i1 @minnum_ogt_small_min_constant(float %x) {
; CHECK-LABEL: @minnum_ogt_small_min_constant(
; CHECK-NEXT: ret i1 false
;
%min = call float @llvm.minnum.f32(float %x, float 0.5)
%cmp = fcmp ogt float %min, 1.0
ret i1 %cmp
}
; min(x, 0.5) >= 1.0 --> false
define i1 @minnum_oge_small_min_constant(float %x) {
; CHECK-LABEL: @minnum_oge_small_min_constant(
; CHECK-NEXT: ret i1 false
;
%min = call float @llvm.minnum.f32(float %x, float 0.5)
%cmp = fcmp oge float %min, 1.0
ret i1 %cmp
}
; min(x, 0.5) == 1.0 --> false
define i1 @minnum_ueq_small_min_constant(float %x) {
; CHECK-LABEL: @minnum_ueq_small_min_constant(
; CHECK-NEXT: ret i1 false
;
%min = call float @llvm.minnum.f32(float %x, float 0.5)
%cmp = fcmp ueq float %min, 1.0
ret i1 %cmp
}
; min(x, 0.5) > 1.0 --> false
define i1 @minnum_ugt_small_min_constant(float %x) {
; CHECK-LABEL: @minnum_ugt_small_min_constant(
; CHECK-NEXT: ret i1 false
;
%min = call float @llvm.minnum.f32(float %x, float 0.5)
%cmp = fcmp ugt float %min, 1.0
ret i1 %cmp
}
; min(x, 0.5) >= 1.0 --> false
define <2 x i1> @minnum_uge_small_min_constant(<2 x float> %x) {
; CHECK-LABEL: @minnum_uge_small_min_constant(
; CHECK-NEXT: ret <2 x i1> zeroinitializer
;
%min = call <2 x float> @llvm.minnum.v2f32(<2 x float> %x, <2 x float> <float 0.5, float 0.5>)
%cmp = fcmp uge <2 x float> %min, <float 1.0, float 1.0>
ret <2 x i1> %cmp
}
; min(x, 0.5) < 1.0 --> true
define <2 x i1> @minnum_olt_small_min_constant(<2 x float> %x) {
; CHECK-LABEL: @minnum_olt_small_min_constant(
; CHECK-NEXT: ret <2 x i1> <i1 true, i1 true>
;
%min = call <2 x float> @llvm.minnum.v2f32(<2 x float> %x, <2 x float> <float 0.5, float 0.5>)
%cmp = fcmp olt <2 x float> %min, <float 1.0, float 1.0>
ret <2 x i1> %cmp
}
; min(x, 0.5) <= 1.0 --> true
define i1 @minnum_ole_small_min_constant(float %x) {
; CHECK-LABEL: @minnum_ole_small_min_constant(
; CHECK-NEXT: ret i1 true
;
%min = call float @llvm.minnum.f32(float %x, float 0.5)
%cmp = fcmp ole float %min, 1.0
ret i1 %cmp
}
; min(x, 0.5) != 1.0 --> true
define i1 @minnum_one_small_min_constant(float %x) {
; CHECK-LABEL: @minnum_one_small_min_constant(
; CHECK-NEXT: ret i1 true
;
%min = call float @llvm.minnum.f32(float %x, float 0.5)
%cmp = fcmp one float %min, 1.0
ret i1 %cmp
}
; min(x, 0.5) < 1.0 --> true
define i1 @minnum_ult_small_min_constant(float %x) {
; CHECK-LABEL: @minnum_ult_small_min_constant(
; CHECK-NEXT: ret i1 true
;
%min = call float @llvm.minnum.f32(float %x, float 0.5)
%cmp = fcmp ult float %min, 1.0
ret i1 %cmp
}
; min(x, 0.5) <= 1.0 --> true
define i1 @minnum_ule_small_min_constant(float %x) {
; CHECK-LABEL: @minnum_ule_small_min_constant(
; CHECK-NEXT: ret i1 true
;
%min = call float @llvm.minnum.f32(float %x, float 0.5)
%cmp = fcmp ule float %min, 1.0
ret i1 %cmp
}
; min(x, 0.5) != 1.0 --> true
define i1 @minnum_une_small_min_constant(float %x) {
; CHECK-LABEL: @minnum_une_small_min_constant(
; CHECK-NEXT: ret i1 true
;
%min = call float @llvm.minnum.f32(float %x, float 0.5)
%cmp = fcmp une float %min, 1.0
ret i1 %cmp
}
; Negative test:
; min(x, 1.0) != 1.0 --> ?
define i1 @minnum_une_equal_min_constant(float %x) {
; CHECK-LABEL: @minnum_une_equal_min_constant(
; CHECK-NEXT: [[MIN:%.*]] = call float @llvm.minnum.f32(float [[X:%.*]], float 1.000000e+00)
; CHECK-NEXT: [[CMP:%.*]] = fcmp une float [[MIN]], 1.000000e+00
; CHECK-NEXT: ret i1 [[CMP]]
;
%min = call float @llvm.minnum.f32(float %x, float 1.0)
%cmp = fcmp une float %min, 1.0
ret i1 %cmp
}
; Negative test:
; min(x, 2.0) != 1.0 --> ?
define i1 @minnum_une_large_min_constant(float %x) {
; CHECK-LABEL: @minnum_une_large_min_constant(
; CHECK-NEXT: [[MIN:%.*]] = call float @llvm.minnum.f32(float [[X:%.*]], float 2.000000e+00)
; CHECK-NEXT: [[CMP:%.*]] = fcmp une float [[MIN]], 1.000000e+00
; CHECK-NEXT: ret i1 [[CMP]]
;
%min = call float @llvm.minnum.f32(float %x, float 2.0)
%cmp = fcmp une float %min, 1.0
ret i1 %cmp
}
; Partial negative test (the minnum simplifies):
; min(x, NaN) != 1.0 --> x != 1.0
define i1 @minnum_une_nan_min_constant(float %x) {
; CHECK-LABEL: @minnum_une_nan_min_constant(
; CHECK-NEXT: [[CMP:%.*]] = fcmp une float [[X:%.*]], 1.000000e+00
; CHECK-NEXT: ret i1 [[CMP]]
;
%min = call float @llvm.minnum.f32(float %x, float 0x7FF8000000000000)
%cmp = fcmp une float %min, 1.0
ret i1 %cmp
}
; max(x, 1.5) == 1.0 --> false
define i1 @maxnum_oeq_large_max_constant(float %x) {
; CHECK-LABEL: @maxnum_oeq_large_max_constant(
; CHECK-NEXT: ret i1 false
;
%max = call float @llvm.maxnum.f32(float %x, float 1.5)
%cmp = fcmp oeq float %max, 1.0
ret i1 %cmp
}
; max(x, 1.5) < 1.0 --> false
define i1 @maxnum_olt_large_max_constant(float %x) {
; CHECK-LABEL: @maxnum_olt_large_max_constant(
; CHECK-NEXT: ret i1 false
;
%max = call float @llvm.maxnum.f32(float %x, float 1.5)
%cmp = fcmp olt float %max, 1.0
ret i1 %cmp
}
; max(x, 1.5) <= 1.0 --> false
define i1 @maxnum_ole_large_max_constant(float %x) {
; CHECK-LABEL: @maxnum_ole_large_max_constant(
; CHECK-NEXT: ret i1 false
;
%max = call float @llvm.maxnum.f32(float %x, float 1.5)
%cmp = fcmp ole float %max, 1.0
ret i1 %cmp
}
; max(x, 1.5) == 1.0 --> false
define i1 @maxnum_ueq_large_max_constant(float %x) {
; CHECK-LABEL: @maxnum_ueq_large_max_constant(
; CHECK-NEXT: ret i1 false
;
%max = call float @llvm.maxnum.f32(float %x, float 1.5)
%cmp = fcmp ueq float %max, 1.0
ret i1 %cmp
}
; max(x, 1.5) < 1.0 --> false
define i1 @maxnum_ult_large_max_constant(float %x) {
; CHECK-LABEL: @maxnum_ult_large_max_constant(
; CHECK-NEXT: ret i1 false
;
%max = call float @llvm.maxnum.f32(float %x, float 1.5)
%cmp = fcmp ult float %max, 1.0
ret i1 %cmp
}
; max(x, 1.5) <= 1.0 --> false
define <2 x i1> @maxnum_ule_large_max_constant(<2 x float> %x) {
; CHECK-LABEL: @maxnum_ule_large_max_constant(
; CHECK-NEXT: ret <2 x i1> zeroinitializer
;
%max = call <2 x float> @llvm.maxnum.v2f32(<2 x float> %x, <2 x float> <float 1.5, float 1.5>)
%cmp = fcmp ule <2 x float> %max, <float 1.0, float 1.0>
ret <2 x i1> %cmp
}
; max(x, 1.5) > 1.0 --> true
define <2 x i1> @maxnum_ogt_large_max_constant(<2 x float> %x) {
; CHECK-LABEL: @maxnum_ogt_large_max_constant(
; CHECK-NEXT: ret <2 x i1> <i1 true, i1 true>
;
%max = call <2 x float> @llvm.maxnum.v2f32(<2 x float> %x, <2 x float> <float 1.5, float 1.5>)
%cmp = fcmp ogt <2 x float> %max, <float 1.0, float 1.0>
ret <2 x i1> %cmp
}
; max(x, 1.5) >= 1.0 --> true
define i1 @maxnum_oge_large_max_constant(float %x) {
; CHECK-LABEL: @maxnum_oge_large_max_constant(
; CHECK-NEXT: ret i1 true
;
%max = call float @llvm.maxnum.f32(float %x, float 1.5)
%cmp = fcmp oge float %max, 1.0
ret i1 %cmp
}
; max(x, 1.5) != 1.0 --> true
define i1 @maxnum_one_large_max_constant(float %x) {
; CHECK-LABEL: @maxnum_one_large_max_constant(
; CHECK-NEXT: ret i1 true
;
%max = call float @llvm.maxnum.f32(float %x, float 1.5)
%cmp = fcmp one float %max, 1.0
ret i1 %cmp
}
; max(x, 1.5) > 1.0 --> true
define i1 @maxnum_ugt_large_max_constant(float %x) {
; CHECK-LABEL: @maxnum_ugt_large_max_constant(
; CHECK-NEXT: ret i1 true
;
%max = call float @llvm.maxnum.f32(float %x, float 1.5)
%cmp = fcmp ugt float %max, 1.0
ret i1 %cmp
}
; max(x, 1.5) >= 1.0 --> true
define i1 @maxnum_uge_large_max_constant(float %x) {
; CHECK-LABEL: @maxnum_uge_large_max_constant(
; CHECK-NEXT: ret i1 true
;
%max = call float @llvm.maxnum.f32(float %x, float 1.5)
%cmp = fcmp uge float %max, 1.0
ret i1 %cmp
}
; max(x, 1.5) != 1.0 --> true
define i1 @maxnum_une_large_max_constant(float %x) {
; CHECK-LABEL: @maxnum_une_large_max_constant(
; CHECK-NEXT: ret i1 true
;
%max = call float @llvm.maxnum.f32(float %x, float 1.5)
%cmp = fcmp une float %max, 1.0
ret i1 %cmp
}
; Negative test:
; max(x, 1.0) != 1.0 --> ?
define i1 @maxnum_une_equal_max_constant(float %x) {
; CHECK-LABEL: @maxnum_une_equal_max_constant(
; CHECK-NEXT: [[MAX:%.*]] = call float @llvm.maxnum.f32(float [[X:%.*]], float 1.000000e+00)
; CHECK-NEXT: [[CMP:%.*]] = fcmp une float [[MAX]], 1.000000e+00
; CHECK-NEXT: ret i1 [[CMP]]
;
%max = call float @llvm.maxnum.f32(float %x, float 1.0)
%cmp = fcmp une float %max, 1.0
ret i1 %cmp
}
; Negative test:
; max(x, 0.5) != 1.0 --> ?
define i1 @maxnum_une_small_max_constant(float %x) {
; CHECK-LABEL: @maxnum_une_small_max_constant(
; CHECK-NEXT: [[MAX:%.*]] = call float @llvm.maxnum.f32(float [[X:%.*]], float 5.000000e-01)
; CHECK-NEXT: [[CMP:%.*]] = fcmp une float [[MAX]], 1.000000e+00
; CHECK-NEXT: ret i1 [[CMP]]
;
%max = call float @llvm.maxnum.f32(float %x, float 0.5)
%cmp = fcmp une float %max, 1.0
ret i1 %cmp
}
; Partial negative test (the maxnum simplifies):
; max(x, NaN) != 1.0 --> x != 1.0
define i1 @maxnum_une_nan_max_constant(float %x) {
; CHECK-LABEL: @maxnum_une_nan_max_constant(
; CHECK-NEXT: [[CMP:%.*]] = fcmp une float [[X:%.*]], 1.000000e+00
; CHECK-NEXT: ret i1 [[CMP]]
;
%max = call float @llvm.maxnum.f32(float %x, float 0x7FF8000000000000)
%cmp = fcmp une float %max, 1.0
ret i1 %cmp
}
define i1 @known_positive_olt_with_negative_constant(double %a) {
; CHECK-LABEL: @known_positive_olt_with_negative_constant(
; CHECK-NEXT: ret i1 false
;
%call = call double @llvm.fabs.f64(double %a)
%cmp = fcmp olt double %call, -1.0
ret i1 %cmp
}
define <2 x i1> @known_positive_ole_with_negative_constant_splat_vec(<2 x i32> %a) {
; CHECK-LABEL: @known_positive_ole_with_negative_constant_splat_vec(
; CHECK-NEXT: ret <2 x i1> zeroinitializer
;
%call = uitofp <2 x i32> %a to <2 x double>
%cmp = fcmp ole <2 x double> %call, <double -2.0, double -2.0>
ret <2 x i1> %cmp
}
define i1 @known_positive_ugt_with_negative_constant(i32 %a) {
; CHECK-LABEL: @known_positive_ugt_with_negative_constant(
; CHECK-NEXT: ret i1 true
;
%call = uitofp i32 %a to float
%cmp = fcmp ugt float %call, -3.0
ret i1 %cmp
}
define <2 x i1> @known_positive_uge_with_negative_constant_splat_vec(<2 x float> %a) {
; CHECK-LABEL: @known_positive_uge_with_negative_constant_splat_vec(
; CHECK-NEXT: ret <2 x i1> <i1 true, i1 true>
;
%call = call <2 x float> @llvm.fabs.v2f32(<2 x float> %a)
%cmp = fcmp uge <2 x float> %call, <float -4.0, float -4.0>
ret <2 x i1> %cmp
}
define i1 @known_positive_oeq_with_negative_constant(half %a) {
; CHECK-LABEL: @known_positive_oeq_with_negative_constant(
; CHECK-NEXT: ret i1 false
;
%call = call half @llvm.fabs.f16(half %a)
%cmp = fcmp oeq half %call, -5.0
ret i1 %cmp
}
define <2 x i1> @known_positive_une_with_negative_constant_splat_vec(<2 x i32> %a) {
; CHECK-LABEL: @known_positive_une_with_negative_constant_splat_vec(
; CHECK-NEXT: ret <2 x i1> <i1 true, i1 true>
;
%call = uitofp <2 x i32> %a to <2 x half>
%cmp = fcmp une <2 x half> %call, <half -6.0, half -6.0>
ret <2 x i1> %cmp
}
define i1 @nonans1(double %in1, double %in2) {
; CHECK-LABEL: @nonans1(
; CHECK-NEXT: ret i1 false
;
%cmp = fcmp nnan uno double %in1, %in2
ret i1 %cmp
}
define i1 @nonans2(double %in1, double %in2) {
; CHECK-LABEL: @nonans2(
; CHECK-NEXT: ret i1 true
;
%cmp = fcmp nnan ord double %in1, %in2
ret i1 %cmp
}
define <2 x i1> @orderedCompareWithNaNVector(<2 x double> %A) {
; CHECK-LABEL: @orderedCompareWithNaNVector(
; CHECK-NEXT: ret <2 x i1> zeroinitializer
;
%cmp = fcmp olt <2 x double> %A, <double 0xFFFFFFFFFFFFFFFF, double 0xFFFFFFFFFFFFFFFF>
ret <2 x i1> %cmp
}
define <2 x i1> @orderedCompareWithNaNVector_undef_elt(<2 x double> %A) {
; CHECK-LABEL: @orderedCompareWithNaNVector_undef_elt(
; CHECK-NEXT: ret <2 x i1> zeroinitializer
;
%cmp = fcmp olt <2 x double> %A, <double 0xFFFFFFFFFFFFFFFF, double undef>
ret <2 x i1> %cmp
}
define <2 x i1> @unorderedCompareWithNaNVector_undef_elt(<2 x double> %A) {
; CHECK-LABEL: @unorderedCompareWithNaNVector_undef_elt(
; CHECK-NEXT: ret <2 x i1> <i1 true, i1 true>
;
%cmp = fcmp ult <2 x double> %A, <double undef, double 0xFFFFFFFFFFFFFFFF>
ret <2 x i1> %cmp
}
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