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Chandler Carruth 4190b507c5 Flip the new block-placement pass to be on by default.
This is mostly to test the waters. I'd like to get results from FNT
build bots and other bots running on non-x86 platforms.

This feature has been pretty heavily tested over the last few months by
me, and it fixes several of the execution time regressions caused by the
inlining work by preventing inlining decisions from radically impacting
block layout.

I've seen very large improvements in yacr2 and ackermann benchmarks,
along with the expected noise across all of the benchmark suite whenever
code layout changes. I've analyzed all of the regressions and fixed
them, or found them to be impossible to fix. See my email to llvmdev for
more details.

I'd like for this to be in 3.1 as it complements the inliner changes,
but if any failures are showing up or anyone has concerns, it is just
a flag flip and so can be easily turned off.

I'm switching it on tonight to try and get at least one run through
various folks' performance suites in case SPEC or something else has
serious issues with it. I'll watch bots and revert if anything shows up.

llvm-svn: 154816
2012-04-16 13:49:17 +00:00
clang Add another constructor to LVFlags and use it to simplify the code a bit. 2012-04-16 13:44:41 +00:00
compiler-rt Partially revert r154390 (http://llvm.org/viewvc/llvm-project?view=rev&revision=154390) 2012-04-16 08:33:01 +00:00
debuginfo-tests Revert previous patch as the corresponding clang patch was reverted. 2012-01-26 07:01:33 +00:00
libclc Switch to BSD/MIT dual license. 2012-02-22 04:47:39 +00:00
libcxx Apply noexcept and constexpr to <atomic>. 2012-04-11 20:14:21 +00:00
libcxxabi I would really like to write the handlers in terms of C++11 atomics. This would give us the best performance, portablity, and safety tradeoff. Unfortunately I can not yet do that. So I've put the desired code in comments, and reverted the handler getters to the slower but safer legacy atomic intrinsics. 2012-03-19 16:56:51 +00:00
lld [docs] Remove a dead link. 2012-04-10 16:18:16 +00:00
lldb Added a new host function that allows us to run shell command and get the output from them along with the status and signal: 2012-04-14 01:42:46 +00:00
llvm Flip the new block-placement pass to be on by default. 2012-04-16 13:49:17 +00:00
polly ScheduleOpt: Fix crash with -enable-polly-vector 2012-04-16 11:06:06 +00:00