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[InstSimplify] add test for m_NegZero with undef elt; NFC

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llvm-svn: 327287
This commit is contained in:
Sanjay Patel 2018-03-12 15:47:32 +00:00
parent 5f563f2d64
commit c34b0de78f
1 changed files with 9 additions and 0 deletions
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9
test/Transforms/InstSimplify/floating-point-arithmetic.ll
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@ -1,6 +1,15 @@
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -instsimplify -S | FileCheck %s
define <2 x float> @fsub_negzero_vec_undef_elts(<2 x float> %x) {
; CHECK-LABEL: @fsub_negzero_vec_undef_elts(
; CHECK-NEXT: [[R:%.*]] = fsub nsz <2 x float> [[X:%.*]], <float undef, float -0.000000e+00>
; CHECK-NEXT: ret <2 x float> [[R]]
;
%r = fsub nsz <2 x float> %x, <float undef, float -0.0>
ret <2 x float> %r
}
; fsub -0.0, (fsub -0.0, X) ==> X
define float @fsub_-0_-0_x(float %a) {
; CHECK-LABEL: @fsub_-0_-0_x(