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| author | Chandler Carruth <chandlerc@gmail.com> | 2014-09-21 23:46:13 +0000 |
|---|---|---|
| committer | Chandler Carruth <chandlerc@gmail.com> | 2014-09-21 23:46:13 +0000 |
| commit | 5d45962b2cdcca6c3795c8a8d20037bc2ca2920e (patch) | |
| tree | ee146c42a792d7a680e5daa877a1521364759bc4 /llvm/lib/CodeGen/LiveDebugVariables.cpp | |
| parent | 02bd018aeb86e201884e0586612f7c2c66b44143 (diff) | |
| download | llvm-5d45962b2cdcca6c3795c8a8d20037bc2ca2920e.zip llvm-5d45962b2cdcca6c3795c8a8d20037bc2ca2920e.tar.gz llvm-5d45962b2cdcca6c3795c8a8d20037bc2ca2920e.tar.bz2 | |
[x86] Teach the new vector shuffle lowering how to cleverly lower single
input v8f32 shuffles which are not 128-bit lane crossing but have
different shuffle patterns in the low and high lanes. This removes most
of the extract/insert traffic that was unnecessary and is particularly
good at lowering cases where only one of the two lanes is shuffled at
all.
I've also added a collection of test cases with undef lanes because this
lowering is somewhat more sensitive to undef lanes than others.
llvm-svn: 218226
Diffstat (limited to 'llvm/lib/CodeGen/LiveDebugVariables.cpp')
0 files changed, 0 insertions, 0 deletions