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[InstSimplify] add tests for fcmp with infinity; NFC

This commit is contained in:
Sanjay Patel 2020-07-17 09:48:27 -04:00
parent 994fb86bc2
commit acbc688263
1 changed files with 68 additions and 0 deletions
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68
llvm/test/Transforms/InstSimplify/floating-point-compare.ll
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@ -1038,3 +1038,71 @@ define <2 x i1> @unorderedCompareWithNaNVector_undef_elt(<2 x double> %A) {
%cmp = fcmp ult <2 x double> %A, <double undef, double 0xFFFFFFFFFFFFFFFF>
ret <2 x i1> %cmp
}
define i1 @is_infinite(float %x) {
; CHECK-LABEL: @is_infinite(
; CHECK-NEXT: [[XABS:%.*]] = call ninf float @llvm.fabs.f32(float [[X:%.*]])
; CHECK-NEXT: [[R:%.*]] = fcmp oeq float [[XABS]], 0x7FF0000000000000
; CHECK-NEXT: ret i1 [[R]]
;
%xabs = call ninf float @llvm.fabs.f32(float %x)
%r = fcmp oeq float %xabs, 0x7FF0000000000000
ret i1 %r
}
define <2 x i1> @is_infinite_neg(<2 x float> %x) {
; CHECK-LABEL: @is_infinite_neg(
; CHECK-NEXT: [[X42:%.*]] = fadd ninf <2 x float> [[X:%.*]], <float 4.200000e+01, float 4.200000e+01>
; CHECK-NEXT: [[R:%.*]] = fcmp oeq <2 x float> [[X42]], <float 0xFFF0000000000000, float 0xFFF0000000000000>
; CHECK-NEXT: ret <2 x i1> [[R]]
;
%x42 = fadd ninf <2 x float> %x, <float 42.0, float 42.0>
%r = fcmp oeq <2 x float> %x42, <float 0xFFF0000000000000, float 0xFFF0000000000000>
ret <2 x i1> %r
}
define i1 @is_infinite_or_nan(float %x) {
; CHECK-LABEL: @is_infinite_or_nan(
; CHECK-NEXT: [[X42:%.*]] = fadd ninf float [[X:%.*]], 4.200000e+01
; CHECK-NEXT: [[R:%.*]] = fcmp ueq float [[X42]], 0xFFF0000000000000
; CHECK-NEXT: ret i1 [[R]]
;
%x42 = fadd ninf float %x, 42.0
%r = fcmp ueq float %x42, 0xFFF0000000000000
ret i1 %r
}
define i1 @is_finite_or_nan(i1 %c, double %x) {
; CHECK-LABEL: @is_finite_or_nan(
; CHECK-NEXT: [[XX:%.*]] = fmul ninf double [[X:%.*]], [[X]]
; CHECK-NEXT: [[S:%.*]] = select i1 [[C:%.*]], double 4.200000e+01, double [[XX]]
; CHECK-NEXT: [[R:%.*]] = fcmp une double [[S]], 0x7FF0000000000000
; CHECK-NEXT: ret i1 [[R]]
;
%xx = fmul ninf double %x, %x
%s = select i1 %c, double 42.0, double %xx
%r = fcmp une double %s, 0x7FF0000000000000
ret i1 %r
}
define <2 x i1> @is_finite_or_nan_commute(<2 x i8> %x) {
; CHECK-LABEL: @is_finite_or_nan_commute(
; CHECK-NEXT: [[CAST:%.*]] = uitofp <2 x i8> [[X:%.*]] to <2 x float>
; CHECK-NEXT: [[R:%.*]] = fcmp une <2 x float> <float 0x7FF0000000000000, float 0x7FF0000000000000>, [[CAST]]
; CHECK-NEXT: ret <2 x i1> [[R]]
;
%cast = uitofp <2 x i8> %x to <2 x float>
%r = fcmp une <2 x float> <float 0x7FF0000000000000, float 0x7FF0000000000000>, %cast
ret <2 x i1> %r
}
define i1 @is_finite_and_ordered(double %x) {
; CHECK-LABEL: @is_finite_and_ordered(
; CHECK-NEXT: [[XX:%.*]] = fmul ninf double [[X:%.*]], [[X]]
; CHECK-NEXT: [[R:%.*]] = fcmp one double [[XX]], 0x7FF0000000000000
; CHECK-NEXT: ret i1 [[R]]
;
%xx = fmul ninf double %x, %x
%r = fcmp one double %xx, 0x7FF0000000000000
ret i1 %r
}