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Andrew Trick 61f1a278b8 misched: Added ScoreboardHazardRecognizer.
The Hazard checker implements in-order contraints, or interlocked
resources. Ready instructions with hazards do not enter the available
queue and are not visible to other heuristics.

The major code change is the addition of SchedBoundary to encapsulate
the state at the top or bottom of the schedule, including both a
pending and available queue.

The scheduler now counts cycles in sync with the hazard checker. These
are minimum cycle counts based on known hazards.

Targets with no itinerary (x86_64) currently remain at cycle 0. To fix
this, we need to provide some maximum issue width for all targets. We
also need to add the concept of expected latency vs. minimum latency.

llvm-svn: 157427
2012-05-24 22:11:09 +00:00
clang Implement the C++11 discarded value expression rules for volatile lvalues. <rdar://problem/10790820>. 2012-05-24 22:04:19 +00:00
compiler-rt Adding back a right parenthesis that was dropped in r157388. 2012-05-24 18:16:39 +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 Add documentation regarding -fno-rtti. 2012-05-20 13:03:53 +00:00
libcxxabi Fix bug in cxa_demangle involving template substitution. 2012-05-02 15:38:11 +00:00
lld Remove some compilation warnings. 2012-05-22 14:45:44 +00:00
lldb Fix missing Resources/Python directory for macosx build. 2012-05-24 18:14:18 +00:00
llvm misched: Added ScoreboardHazardRecognizer. 2012-05-24 22:11:09 +00:00
polly ScheduleOptimizer: Simplify some code 2012-05-22 10:47:31 +00:00