Temporarily Revert "Add basic loop fusion pass."

As it's causing some bot failures (and per request from kbarton).

This reverts commit r358543/ab70da07286e618016e78247e4a24fcb84077fda.

llvm-svn: 358546

1 files changed, 0 insertions, 580 deletions

diff --git a/llvm/test/Transforms/InstSimplify/floating-point-compare.ll b/llvm/test/Transforms/InstSimplify/floating-point-compare.ll
deleted file mode 100644
index 5ce56e029d3..00000000000
--- a/llvm/test/Transforms/InstSimplify/floating-point-compare.ll
+++ /dev/null
@@ -1,580 +0,0 @@
-; 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 float @llvm.maxnum.f32(float, 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_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
-}
-
-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 double @llvm.fabs.f64(double %x)
-  %cmp = fcmp nnan 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 <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 double @llvm.fabs.f64(double %x)
-  %cmp = fcmp nnan 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 <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 @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
-}