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[SLP] Test for wrongly vectorized set of extractelements, NFC.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@315217 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Alexey Bataev 2017-10-09 17:14:03 +00:00
parent c453306c9b
commit 4902d02851
1 changed files with 30 additions and 0 deletions
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30
test/Transforms/SLPVectorizer/X86/blending-shuffle.ll
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@ -134,3 +134,33 @@ define i8 @k(<4 x i8> %x) {
%3 = sdiv i8 %1, %2
ret i8 %3
}
define i8 @k_bb(<4 x i8> %x) {
; CHECK-LABEL: @k_bb(
; CHECK-NEXT: br label [[BB1:%.*]]
; CHECK: bb1:
; CHECK-NEXT: [[TMP1:%.*]] = mul <4 x i8> [[X:%.*]], [[X]]
; CHECK-NEXT: [[TMP2:%.*]] = shufflevector <4 x i8> [[TMP1]], <4 x i8> undef, <2 x i32> <i32 0, i32 1>
; CHECK-NEXT: [[TMP3:%.*]] = mul <4 x i8> [[X]], [[X]]
; CHECK-NEXT: [[TMP4:%.*]] = shufflevector <4 x i8> [[TMP3]], <4 x i8> undef, <2 x i32> <i32 3, i32 2>
; CHECK-NEXT: [[TMP5:%.*]] = add <2 x i8> [[TMP2]], [[TMP4]]
; CHECK-NEXT: [[TMP6:%.*]] = extractelement <2 x i8> [[TMP5]], i32 0
; CHECK-NEXT: [[TMP7:%.*]] = extractelement <2 x i8> [[TMP5]], i32 1
; CHECK-NEXT: [[TMP8:%.*]] = sdiv i8 [[TMP6]], [[TMP7]]
; CHECK-NEXT: ret i8 [[TMP8]]
;
%x0 = extractelement <4 x i8> %x, i32 0
br label %bb1
bb1:
%x3 = extractelement <4 x i8> %x, i32 3
%x1 = extractelement <4 x i8> %x, i32 1
%x2 = extractelement <4 x i8> %x, i32 2
%x0x0 = mul i8 %x0, %x0
%x3x3 = mul i8 %x3, %x3
%x1x1 = mul i8 %x1, %x1
%x2x2 = mul i8 %x2, %x2
%1 = add i8 %x0x0, %x3x3
%2 = add i8 %x1x1, %x2x2
%3 = sdiv i8 %1, %2
ret i8 %3
}