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| author | 2014-02-14 12:15:02 -0800 | |
|---|---|---|
| committer | 2014-02-14 12:15:02 -0800 | |
| commit | de99bba92b4beac4c347772177f47bdd61e8f376 (patch) | |
| tree | aaae21487f77a20f58f6943c49f1ca92457d1559 /compiler/llvm/compiler_llvm.cc | |
| parent | 209a3a03595984a7a94103c3c6ba8c5afaf358a1 (diff) | |
Optimize x86 long V*V by skipping imul
The algorithm for long multiplication can take advantage of the fact
that we are multiplying a value by itself by converting 1L*2H + 2L*1H
into (2H*1L)+(2H*1L), thus converting a multiply into an addition.
Change-Id: I259a25699a8787badd943318e99bafdd06587ec6
Signed-off-by: Mark Mendell <mark.p.mendell@intel.com>
Diffstat (limited to 'compiler/llvm/compiler_llvm.cc')
0 files changed, 0 insertions, 0 deletions