1
0
mirror of https://github.com/RPCS3/llvm-mirror.git synced 2024-10-28 14:32:51 +01:00
Commit Graph

6 Commits

Author SHA1 Message Date
Hans Wennborg
37a572f581 SelectionDAG switch lowering: use 'unsigned' to count destination popularity
SwitchInst::getNumCases() returns unsinged, so using uint64_t to count cases
seems unnecessary.

Also fix a missing CHECK in the test case.

llvm-svn: 224393
2014-12-16 23:41:59 +00:00
Hans Wennborg
e8bfbc284d Add a proper triple to switch-jump-table.ll
llvm-svn: 223571
2014-12-06 02:08:16 +00:00
NAKAMURA Takumi
73f7293810 llvm/test/CodeGen/X86/switch-jump-table.ll: Add explicit triple. Local labels have a prefix "." for targeting i686-cygming.
llvm-svn: 223570
2014-12-06 02:03:49 +00:00
Hans Wennborg
24cc36324d 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
f8109e3ddf 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
09865c30b6 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