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18 Commits

Author SHA1 Message Date
Matthias Braun 11042c8523 LiveRangeCalc: Rename some parameters from kill to use, NFC. 
Those parameters did not necessarily describe kill points but just uses.

llvm-svn: 229601
 2015-02-18 01:50:52 +00:00
Matthias Braun 1aed6ffa35 LiveRangeCalc: Rewrite subrange calculation 
This changes subrange calculation to calculate subranges sequentially
instead of in parallel. The code is easier to understand that way and
addresses the code review issues raised about LiveOutData being
hard to understand/needing more comments by removing them :)

llvm-svn: 224313
 2014-12-16 04:03:38 +00:00
Matthias Braun c3a72c2e5f Revert "LiveRangeCalc: Rewrite subrange calculation" 
Revert until I find out why non-subreg enabled targets break.

This reverts commit 6097277eefb9c5fb35a7f493c783ee1fd1b9d6a7.

llvm-svn: 224278
 2014-12-15 21:36:35 +00:00
Matthias Braun 0352201e15 LiveRangeCalc: Rewrite subrange calculation 
This changes subrange calculation to calculate subranges sequentially
instead of in parallel. The code is easier to understand that way and
addresses the code review issues raised about LiveOutData being
hard to understand/needing more comments by removing them :)

llvm-svn: 224272
 2014-12-15 21:16:21 +00:00
Matthias Braun 2f66232bde LiveIntervalAnalysis: Compute subregister ranges. 
llvm-svn: 223878
 2014-12-10 01:12:12 +00:00
Benjamin Kramer a7c40ef022 Canonicalize header guards into a common format. 
Add header guards to files that were missing guards. Remove #endif comments
as they don't seem common in LLVM (we can easily add them back if we decide
they're useful)

Changes made by clang-tidy with minor tweaks.

llvm-svn: 215558
 2014-08-13 16:26:38 +00:00
Craig Topper ada0857679 [C++11] More 'nullptr' conversion. In some cases just using a boolean check instead of comparing to nullptr. 
llvm-svn: 206356
 2014-04-16 04:21:27 +00:00
NAKAMURA Takumi d5d16d57eb LiveRangeCalc.h: Update a description corresponding to r192396. [-Wdocumentation] 
llvm-svn: 192421
 2013-10-11 04:52:03 +00:00
Matthias Braun 2d5c32b3b5 Work on LiveRange instead of LiveInterval where possible 
Also change some pointer arguments to references at some places where
0-pointers are not allowed.

llvm-svn: 192396
 2013-10-10 21:28:57 +00:00
Benjamin Kramer 079b96e6f7 Revert "Give internal classes hidden visibility." 
It works with clang, but GCC has different rules so we can't make all of those
hidden. This reverts commit r190534.

llvm-svn: 190536
 2013-09-11 18:05:11 +00:00
Benjamin Kramer 6a44af3629 Give internal classes hidden visibility. 
Worth 100k on a linux/x86_64 Release+Asserts clang.

llvm-svn: 190534
 2013-09-11 17:42:27 +00:00
Jakob Stoklund Olesen 874c412b6f Remove declaration of nonexistant function. 
Patch by Matthias Braun!

llvm-svn: 188390
 2013-08-14 17:28:44 +00:00
Jakob Stoklund Olesen b389271101 Copy single reaching defs directly into the LiveInterval. 
When findReachingDefs() finds that only one value can reach the basic
block, just copy the work list of visited blocks directly into the live
interval.

Sort the block list and use a LiveRangeUpdater to make the bulk add
fast.

When multiple reaching defs are found, transfer the work list to the
updateSSA() work list as before. Also use LiveRangeUpdater in
updateLiveIns() following updateSSA().

This makes live interval analysis more than 3x faster on one huge test
case.

llvm-svn: 175685
 2013-02-20 23:08:26 +00:00
Jakob Stoklund Olesen 3d604ab933 Be more verbose when detecting dominance problems. 
Catch uses of undefined physregs that haven't been added to basic block
live-in lists. Run the verifier to pinpoint the problem.

Also run the verifier when a virtual register use is not jointly
dominated by defs.

llvm-svn: 160207
 2012-07-13 23:39:05 +00:00
Jakob Stoklund Olesen 989b3b1516 Implement LiveRangeCalc::extendToUses() and createDeadDefs(). 
These LiveRangeCalc methods are to be used when computing a live range
from scratch.

llvm-svn: 158027
 2012-06-05 21:54:09 +00:00
Jakob Stoklund Olesen 5ef0e0b262 Pass context pointers to LiveRangeCalc::reset(). 
Remove the same pointers from all the other LiveRangeCalc functions,
simplifying the interface.

llvm-svn: 157941
 2012-06-04 18:21:16 +00:00
NAKAMURA Takumi cac923b556 Unbreak msvc. 
llvm-svn: 139581
 2011-09-13 03:58:34 +00:00
Jakob Stoklund Olesen 487f2a37bf Extract live range calculations from SplitKit. 
SplitKit will soon need two copies of these data structures, and the
algorithms will also be useful when LiveIntervalAnalysis becomes
independent of LiveVariables.

llvm-svn: 139572
 2011-09-13 01:34:21 +00:00