maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity
204,106 Commits 23 Branches 0 Tags 2.2 GiB
Commit Graph

5 Commits

Author SHA1 Message Date
Hans Wennborg 08de833c1c SelectionDAG switch lowering: Replace unreachable default with most popular case. 
This can significantly reduce the size of the switch, allowing for more
efficient lowering.

I also worked with the idea of exploiting unreachable defaults by
omitting the range check for jump tables, but always ended up with a
non-neglible binary size increase. It might be worth looking into some more.

SimplifyCFG currently does this transformation, but I'm working towards changing
that so we can optimize harder based on unreachable defaults.

Differential Revision: http://reviews.llvm.org/D6510

llvm-svn: 223566
 2014-12-06 01:28:50 +00:00
Hans Wennborg 5bef5b522b Revert r223049, r223050 and r223051 while investigating test failures. 
I didn't foresee affecting the Clang test suite :/

llvm-svn: 223054
 2014-12-01 17:36:43 +00:00
Hans Wennborg 1571336fb2 SelectionDAG switch lowering: Replace unreachable default with most popular case. 
This can significantly reduce the size of the switch, allowing for more
efficient lowering.

I also worked with the idea of exploiting unreachable defaults by
omitting the range check for jump tables, but always ended up with a
non-neglible binary size increase. It might be worth looking into some more.

llvm-svn: 223049
 2014-12-01 17:08:32 +00:00
Rafael Espindola 2f3c2fe7c5 Really fix the fall-through logic. 
Add a triple to the tests.

llvm-svn: 132885
 2011-06-12 05:57:01 +00:00
Rafael Espindola cb55e752ed Test for the previous commit. 
llvm-svn: 132884
 2011-06-12 05:35:39 +00:00