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[ConstantFolding] update test checks FP min/max intrinsics

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There's a slight difference in functionality with the new CHECK lines:
before, we allowed either -0.0 or 0.0 for maxnum/minnum. That matches
the definition, but we should always get a deterministic result from
constant folding within the compiler, so now we assert that we got
the single expected result in all cases.
This commit is contained in:
Sanjay Patel 2020-07-29 09:35:26 -04:00
parent 99ab22ce47
commit 8d20a499b4
1 changed files with 57 additions and 67 deletions
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124
test/Analysis/ConstantFolding/min-max.ll
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@ -1,136 +1,126 @@
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -instcombine -S -o - %s | FileCheck %s
; Tests that constant folding of min and max operations works as expected.
declare float @llvm.minnum.f32(float, float)
declare float @llvm.maxnum.f32(float, float)
declare <4 x float> @llvm.minnum.v4f32(<4 x float>, <4 x float>)
declare float @llvm.maxnum.f32(float, float)
declare <4 x float> @llvm.maxnum.v4f32(<4 x float>, <4 x float>)
declare float @llvm.minimum.f32(float, float)
declare float @llvm.maximum.f32(float, float)
declare <4 x float> @llvm.minimum.v4f32(<4 x float>, <4 x float>)
declare float @llvm.maximum.f32(float, float)
declare <4 x float> @llvm.maximum.v4f32(<4 x float>, <4 x float>)
; CHECK: define float @minnum_float() {
define float @minnum_float() {
; CHECK-NEXT: ret float 5.000000e+00
; CHECK-LABEL: @minnum_float(
; CHECK-NEXT: ret float 5.000000e+00
;
%1 = call float @llvm.minnum.f32(float 5.0, float 42.0)
ret float %1
}
; Check that minnum constant folds to propagate non-NaN or smaller argument
; CHECK: define <4 x float> @minnum_float_vec() {
define <4 x float> @minnum_float_vec() {
; CHECK-NEXT: ret <4 x float> <float 0x7FF8000000000000, float 5.000000e+00,
; CHECK-SAME: float 4.200000e+01, float 5.000000e+00>
%1 = call <4 x float> @llvm.minnum.v4f32(
<4 x float> <float 0x7FF8000000000000, float 0x7FF8000000000000, float 42., float 42.>,
<4 x float> <float 0x7FF8000000000000, float 5., float 0x7FF8000000000000, float 5.>
)
; CHECK-LABEL: @minnum_float_vec(
; CHECK-NEXT: ret <4 x float> <float 0x7FF8000000000000, float 5.000000e+00, float 4.200000e+01, float 5.000000e+00>
;
%1 = call <4 x float> @llvm.minnum.v4f32(<4 x float> <float 0x7FF8000000000000, float 0x7FF8000000000000, float 42., float 42.>, <4 x float> <float 0x7FF8000000000000, float 5., float 0x7FF8000000000000, float 5.>)
ret <4 x float> %1
}
; Check that minnum constant folds to propagate one of its argument zeros
; CHECK: define <4 x float> @minnum_float_zeros_vec() {
define <4 x float> @minnum_float_zeros_vec() {
; CHECK-NEXT: ret <4 x float> <float 0.000000e+00, float {{-?}}0.000000e+00,
; CHECK-SAME: float {{-?}}0.000000e+00, float -0.000000e+00>
%1 = call <4 x float> @llvm.minnum.v4f32(
<4 x float> <float 0.0, float -0.0, float 0.0, float -0.0>,
<4 x float> <float 0.0, float 0.0, float -0.0, float -0.0>
)
; CHECK-LABEL: @minnum_float_zeros_vec(
; CHECK-NEXT: ret <4 x float> <float 0.000000e+00, float -0.000000e+00, float 0.000000e+00, float -0.000000e+00>
;
%1 = call <4 x float> @llvm.minnum.v4f32(<4 x float> <float 0.0, float -0.0, float 0.0, float -0.0>, <4 x float> <float 0.0, float 0.0, float -0.0, float -0.0>)
ret <4 x float> %1
}
; CHECK: define float @maxnum_float() {
define float @maxnum_float() {
; CHECK-NEXT: ret float 4.200000e+01
; CHECK-LABEL: @maxnum_float(
; CHECK-NEXT: ret float 4.200000e+01
;
%1 = call float @llvm.maxnum.f32(float 5.0, float 42.0)
ret float %1
}
; Check that maxnum constant folds to propagate non-NaN or greater argument
; CHECK: define <4 x float> @maxnum_float_vec() {
define <4 x float> @maxnum_float_vec() {
; CHECK-NEXT: ret <4 x float> <float 0x7FF8000000000000, float 5.000000e+00,
; CHECK-SAME: float 4.200000e+01, float 4.200000e+01>
%1 = call <4 x float> @llvm.maxnum.v4f32(
<4 x float> <float 0x7FF8000000000000, float 0x7FF8000000000000, float 42., float 42.>,
<4 x float> <float 0x7FF8000000000000, float 5., float 0x7FF8000000000000, float 5.>
)
; CHECK-LABEL: @maxnum_float_vec(
; CHECK-NEXT: ret <4 x float> <float 0x7FF8000000000000, float 5.000000e+00, float 4.200000e+01, float 4.200000e+01>
;
%1 = call <4 x float> @llvm.maxnum.v4f32(<4 x float> <float 0x7FF8000000000000, float 0x7FF8000000000000, float 42., float 42.>, <4 x float> <float 0x7FF8000000000000, float 5., float 0x7FF8000000000000, float 5.>)
ret <4 x float> %1
}
; Check that maxnum constant folds to propagate one of its argument zeros
; CHECK: define <4 x float> @maxnum_float_zeros_vec() {
define <4 x float> @maxnum_float_zeros_vec() {
; CHECK-NEXT: ret <4 x float> <float 0.000000e+00, float {{-?}}0.000000e+00,
; CHECK-SAME: float {{-?}}0.000000e+00, float -0.000000e+00>
%1 = call <4 x float> @llvm.maxnum.v4f32(
<4 x float> <float 0.0, float -0.0, float 0.0, float -0.0>,
<4 x float> <float 0.0, float 0.0, float -0.0, float -0.0>
)
; CHECK-LABEL: @maxnum_float_zeros_vec(
; CHECK-NEXT: ret <4 x float> <float 0.000000e+00, float -0.000000e+00, float 0.000000e+00, float -0.000000e+00>
;
%1 = call <4 x float> @llvm.maxnum.v4f32(<4 x float> <float 0.0, float -0.0, float 0.0, float -0.0>, <4 x float> <float 0.0, float 0.0, float -0.0, float -0.0>)
ret <4 x float> %1
}
; CHECK: define float @minimum_float() {
define float @minimum_float() {
; CHECK-NEXT: ret float 5.000000e+00
; CHECK-LABEL: @minimum_float(
; CHECK-NEXT: ret float 5.000000e+00
;
%1 = call float @llvm.minimum.f32(float 5.0, float 42.0)
ret float %1
}
; Check that minimum propagates its NaN or smaller argument
; CHECK: define <4 x float> @minimum_float_vec() {
define <4 x float> @minimum_float_vec() {
; CHECK-NEXT: ret <4 x float> <float 0x7FF8000000000000, float 0x7FF8000000000000,
; CHECK-SAME: float 0x7FF8000000000000, float 5.000000e+00>
%1 = call <4 x float> @llvm.minimum.v4f32(
<4 x float> <float 0x7FF8000000000000, float 0x7FF8000000000000, float 42., float 42.>,
<4 x float> <float 0x7FF8000000000000, float 5., float 0x7FF8000000000000, float 5.>
)
; CHECK-LABEL: @minimum_float_vec(
; CHECK-NEXT: ret <4 x float> <float 0x7FF8000000000000, float 0x7FF8000000000000, float 0x7FF8000000000000, float 5.000000e+00>
;
%1 = call <4 x float> @llvm.minimum.v4f32(<4 x float> <float 0x7FF8000000000000, float 0x7FF8000000000000, float 42., float 42.>, <4 x float> <float 0x7FF8000000000000, float 5., float 0x7FF8000000000000, float 5.>)
ret <4 x float> %1
}
; Check that minimum treats -0.0 as smaller than 0.0 while constant folding
; CHECK: define <4 x float> @minimum_float_zeros_vec() {
define <4 x float> @minimum_float_zeros_vec() {
; CHECK-NEXT: ret <4 x float> <float 0.000000e+00, float -0.000000e+00,
; CHECK-SAME: float -0.000000e+00, float -0.000000e+00>
%1 = call <4 x float> @llvm.minimum.v4f32(
<4 x float> <float 0.0, float -0.0, float 0.0, float -0.0>,
<4 x float> <float 0.0, float 0.0, float -0.0, float -0.0>
)
; CHECK-LABEL: @minimum_float_zeros_vec(
; CHECK-NEXT: ret <4 x float> <float 0.000000e+00, float -0.000000e+00, float -0.000000e+00, float -0.000000e+00>
;
%1 = call <4 x float> @llvm.minimum.v4f32(<4 x float> <float 0.0, float -0.0, float 0.0, float -0.0>, <4 x float> <float 0.0, float 0.0, float -0.0, float -0.0>)
ret <4 x float> %1
}
; CHECK: define float @maximum_float() {
define float @maximum_float() {
; CHECK-NEXT: ret float 4.200000e+01
; CHECK-LABEL: @maximum_float(
; CHECK-NEXT: ret float 4.200000e+01
;
%1 = call float @llvm.maximum.f32(float 5.0, float 42.0)
ret float %1
}
; Check that maximum propagates its NaN or greater argument
; CHECK: define <4 x float> @maximum_float_vec() {
define <4 x float> @maximum_float_vec() {
; CHECK-NEXT: ret <4 x float> <float 0x7FF8000000000000, float 0x7FF8000000000000,
; CHECK-SAME: float 0x7FF8000000000000, float 4.200000e+01>
%1 = call <4 x float> @llvm.maximum.v4f32(
<4 x float> <float 0x7FF8000000000000, float 0x7FF8000000000000, float 42., float 42.>,
<4 x float> <float 0x7FF8000000000000, float 5., float 0x7FF8000000000000, float 5.>
)
; CHECK-LABEL: @maximum_float_vec(
; CHECK-NEXT: ret <4 x float> <float 0x7FF8000000000000, float 0x7FF8000000000000, float 0x7FF8000000000000, float 4.200000e+01>
;
%1 = call <4 x float> @llvm.maximum.v4f32(<4 x float> <float 0x7FF8000000000000, float 0x7FF8000000000000, float 42., float 42.>, <4 x float> <float 0x7FF8000000000000, float 5., float 0x7FF8000000000000, float 5.>)
ret <4 x float> %1
}
; Check that maximum treats -0.0 as smaller than 0.0 while constant folding
; CHECK: define <4 x float> @maximum_float_zeros_vec() {
define <4 x float> @maximum_float_zeros_vec() {
; CHECK-NEXT: ret <4 x float> <float 0.000000e+00, float 0.000000e+00,
; CHECK-SAME: float 0.000000e+00, float -0.000000e+00>
%1 = call <4 x float> @llvm.maximum.v4f32(
<4 x float> <float 0.0, float -0.0, float 0.0, float -0.0>,
<4 x float> <float 0.0, float 0.0, float -0.0, float -0.0>
)
; CHECK-LABEL: @maximum_float_zeros_vec(
; CHECK-NEXT: ret <4 x float> <float 0.000000e+00, float 0.000000e+00, float 0.000000e+00, float -0.000000e+00>
;
%1 = call <4 x float> @llvm.maximum.v4f32(<4 x float> <float 0.0, float -0.0, float 0.0, float -0.0>, <4 x float> <float 0.0, float 0.0, float -0.0, float -0.0>)
ret <4 x float> %1
}