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| author | Simon Pilgrim <llvm-dev@redking.me.uk> | 2016-02-07 22:51:06 +0000 |
|---|---|---|
| committer | Simon Pilgrim <llvm-dev@redking.me.uk> | 2016-02-07 22:51:06 +0000 |
| commit | f116e4acc7f2a3187ffabb3e3286db416121ff0c (patch) | |
| tree | a74f9579d335ecd221732f9b7189d9c15c390caf /lldb/source/Plugins/ScriptInterpreter/Python/ScriptInterpreterPython.cpp | |
| parent | bd173badb4743aac228027e5331bdbace5c9e286 (diff) | |
[X86][SSE] Resolve target shuffle inputs to sentinels to permit more combines
The combineX86ShufflesRecursively only supports unary shuffles, but was missing the opportunity to combine binary shuffles with a zero / undef second input.
This patch resolves target shuffle inputs, converting the shuffle mask elements to SM_SentinelUndef/SM_SentinelZero where possible. It then resolves the updated mask to check if we have created a faux unary shuffle.
Additionally, we now attempt to recursively call combineX86ShufflesRecursively for all input operands (we used to just recurse for unary integer shuffles and unary unpacks) - it safely returns early if its not a target shuffle.
Differential Revision: http://reviews.llvm.org/D16683
llvm-svn: 260063
Diffstat (limited to 'lldb/source/Plugins/ScriptInterpreter/Python/ScriptInterpreterPython.cpp')
0 files changed, 0 insertions, 0 deletions