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[ARM] preserve test intent by removing undef

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We need to clean up the DAG floating-point undef logic.
This process is similar to how we handled integer undef
logic in https://reviews.llvm.org/D43141.

And as we did there, I'm trying to reduce the patch by
changing tests that would probably become meaningless
once we correct FP undef folding.

Follow-up to:
https://reviews.llvm.org/rL332538
...because that change wasn't enough.

llvm-svn: 332637
This commit is contained in:
Sanjay Patel 2018-05-17 18:08:27 +00:00
parent 0e08478da6
commit ff7ec1b219
1 changed files with 4 additions and 4 deletions
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8
test/CodeGen/ARM/reg_sequence.ll
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@ -269,16 +269,16 @@ define arm_aapcs_vfpcc float @t9(%0* nocapture, %3* nocapture) nounwind {
}
; PR7162
define arm_aapcs_vfpcc i32 @t10() nounwind {
define arm_aapcs_vfpcc i32 @t10(float %x) nounwind {
entry:
; CHECK-LABEL: t10:
; CHECK: vmov.i32 q[[Q0:[0-9]+]], #0x3f000000
; CHECK: vmul.f32 q8, q8, d[[DREG:[0-1]+]]
; CHECK: vadd.f32 q8, q8, q8
%0 = shufflevector <4 x float> zeroinitializer, <4 x float> undef, <4 x i32> zeroinitializer ; <<4 x float>> [#uses=1]
%1 = insertelement <4 x float> %0, float undef, i32 1 ; <<4 x float>> [#uses=1]
%2 = insertelement <4 x float> %1, float undef, i32 2 ; <<4 x float>> [#uses=1]
%3 = insertelement <4 x float> %2, float undef, i32 3 ; <<4 x float>> [#uses=1]
%1 = insertelement <4 x float> %0, float %x, i32 1 ; <<4 x float>> [#uses=1]
%2 = insertelement <4 x float> %1, float %x, i32 2 ; <<4 x float>> [#uses=1]
%3 = insertelement <4 x float> %2, float %x, i32 3 ; <<4 x float>> [#uses=1]
%tmp54.i = bitcast <4 x float> %3 to <2 x double> ; <<2 x double>> [#uses=1]
%4 = extractelement <2 x double> %tmp54.i, i32 1 ; <double> [#uses=1]
%5 = bitcast double %4 to <2 x float> ; <<2 x float>> [#uses=1]