[PATCH] D49928: [SLP] Fix PR38339: Instruction does not dominate all uses!
Sanjay Patel via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Mon Jul 30 11:12:19 PDT 2018
spatel added a reviewer: dtemirbulatov.
spatel added a comment.
Someone more familiar with SLP should take a look, but this seems ok to me.
The testcase can be simplified to a single BB:
define void @f1(<2 x i16> %x, i16* %a) {
%t2 = extractelement <2 x i16> %x, i32 0
%t3 = extractelement <2 x i16> %x, i32 1
%ptr0 = getelementptr inbounds [4 x i16], [4 x i16]* undef, i16 0, i16 0
%ptr1 = getelementptr inbounds [4 x i16], [4 x i16]* undef, i16 0, i16 1
%ptr2 = getelementptr inbounds [4 x i16], [4 x i16]* undef, i16 0, i16 2
%ptr3 = getelementptr inbounds [4 x i16], [4 x i16]* undef, i16 0, i16 3
store i16 %t2, i16* %a
store i16 %t2, i16* %ptr0
store i16 %t3, i16* %ptr1
store i16 %t3, i16* %ptr2
store i16 %t2, i16* %ptr3
ret void
}
Repository:
rL LLVM
https://reviews.llvm.org/D49928
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