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Make sure that we don't introduce illegal build_vector dag nodes when trying to fold a sign_extend of a build_vector. This fixes a regression introduced by r200234. Added test CodeGen/X86/fold-vector-sext-crash.ll to verify that llc no longer crashes with an assertion failure due to an illegal build_vector of type MVT::v4i64. Thanks to Ilia Filippov for spotting this regression and for providing a reproducible test case. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200313 91177308-0d34-0410-b5e6-96231b3b80d8
13 lines
548 B
LLVM
13 lines
548 B
LLVM
; RUN: llc < %s -mcpu=core-avx-i -mtriple=i386-unknown-linux-gnu -mattr=+avx,+popcnt,+cmov
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; Make sure that we don't introduce illegal build_vector dag nodes
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; when trying to fold a sign_extend of a constant build_vector.
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; After r200234 the test case below was crashing the compiler with an assertion failure
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; due to an illegal build_vector of type MVT::v4i64.
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define <4 x i64> @foo(<4 x i64> %A) {
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%1 = select <4 x i1> <i1 true, i1 true, i1 false, i1 false>, <4 x i64> %A, <4 x i64><i64 undef, i64 undef, i64 0, i64 0>
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ret <4 x i64> %1
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}
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