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| author | Jakub Kuderski <jakub.kuderski@arm.com> | 2015-09-08 10:03:17 +0000 |
|---|---|---|
| committer | Jakub Kuderski <jakub.kuderski@arm.com> | 2015-09-08 10:03:17 +0000 |
| commit | 7cd48100214c7c7ccf3d0e093e3d88db969865f1 (patch) | |
| tree | 01a76f2bc60ba51c2bffd238033bb76d58f9edf1 /llvm/lib/Target/Mips/Disassembler/MipsDisassembler.cpp | |
| parent | d96d89f6e5f0948c7ee8daf60ae19c356c43dfdf (diff) | |
| download | bcm5719-llvm-7cd48100214c7c7ccf3d0e093e3d88db969865f1.tar.gz bcm5719-llvm-7cd48100214c7c7ccf3d0e093e3d88db969865f1.zip | |
There is a trunc(lshr (zext A), Cst) optimization in InstCombineCasts that
removes cast by performing the lshr on smaller types. However, currently there
is no trunc(lshr (sext A), Cst) variant.
This patch add such optimization by transforming trunc(lshr (sext A), Cst)
to ashr A, Cst.
Differential Revision: http://reviews.llvm.org/D12520
llvm-svn: 246997
Diffstat (limited to 'llvm/lib/Target/Mips/Disassembler/MipsDisassembler.cpp')
0 files changed, 0 insertions, 0 deletions
