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| author | Andrea Di Biagio <Andrea_DiBiagio@sn.scee.net> | 2015-04-22 14:53:39 +0000 |
|---|---|---|
| committer | Andrea Di Biagio <Andrea_DiBiagio@sn.scee.net> | 2015-04-22 14:53:39 +0000 |
| commit | 6cd2f42fac915e646b92924e8ee3c684e0af881d (patch) | |
| tree | 8e3c0db74fb3462dabdcb3232cb9211bf98f378b /llvm/lib/Bitcode/Reader/BitcodeReader.cpp | |
| parent | c587bee405a4c542488412541753f2e1126392cf (diff) | |
[X86][AVX] Fix failure due to a missing ISel pattern to select VBROADCAST nodes (PR23259).
This fixes a regression introduced at revision 218263.
On AVX, if we optimize for size, a splat build_vector of a load
is lowered into a VBROADCAST node. This is done even if the value type of the
splat build_vector node is v2i64.
Since AVX doesn't support v2f64/v2i64 broadcasts, revision 218263 added two
extra tablegen patterns to allow selecting a VMOVDDUPrm from an X86VBroadcast
where the scalar element comes from a loadi64/loadf64.
However, revision 218263 forgot to add an extra fallback pattern for the case
where we have a X86VBroadcast of a loadi64 with multiple uses.
This patch adds the missing tablegen pattern in X86InstrSSE.td.
This patch also adds an extra test to 'splat-for-size.ll' to verify that ISel
doesn't crash with a 'fatal error in the backend' due to a missing AVX pattern
to select v2i64 X86ISD::BROADCAST nodes.
llvm-svn: 235509
Diffstat (limited to 'llvm/lib/Bitcode/Reader/BitcodeReader.cpp')
0 files changed, 0 insertions, 0 deletions