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164 Commits

Author SHA1 Message Date
Evan Cheng 1a99a5f501 It has finally happened. Spiller is now using live interval info. 
This fixes a very subtle bug. vr defined by an implicit_def is allowed overlap with any register since it doesn't actually modify anything. However, if it's used as a two-address use, its live range can be extended and it can be spilled. The spiller must take care not to emit a reload for the vn number that's defined by the implicit_def. This is both a correctness and performance issue.

llvm-svn: 69743
 2009-04-21 22:46:52 +00:00
Sanjiv Gupta 88e15b258f r66870 missed this out. 
llvm-svn: 67082
 2009-03-17 15:46:15 +00:00
Owen Anderson d37ddf5b5b Convert VirtRegMap to a MachineFunctionPass. 
llvm-svn: 66870
 2009-03-13 05:55:11 +00:00
Owen Anderson aabe06d92a Reorganization: Move the Spiller out of VirtRegMap.cpp into its own files. No (intended) functionality change. 
llvm-svn: 66720
 2009-03-11 22:31:21 +00:00
Evan Cheng c544cb0eca Change TargetInstrInfo::isMoveInstr to return source and destination sub-register indices as well. 
llvm-svn: 62600
 2009-01-20 19:12:24 +00:00
Misha Brukman 572f2646c2 * Moved author attribution to CREDITS.TXT 
* Removed trailing whitespace

llvm-svn: 61927
 2009-01-08 16:40:25 +00:00
Misha Brukman da46748ad2 * Alphabetized #includes 
* Removed trailing whitespace

llvm-svn: 61926
 2009-01-08 15:50:22 +00:00
Argyrios Kyrtzidis 4172d641d1 Fix compilation error on MSVC. 
llvm-svn: 59629
 2008-11-19 12:56:21 +00:00
Lang Hames 49ab8bc67d Big PBQP allocator update. Adds coalescing support, stack slot coloring, several bug-fixes. 
llvm-svn: 59414
 2008-11-16 12:12:54 +00:00
Lang Hames 9a91bd82c5 Test commit. 
llvm-svn: 59293
 2008-11-14 06:51:35 +00:00
Dan Gohman 9c4b7d5c4f Fix command-line option printing to print two spaces where needed, 
instead of requiring all "short description" strings to begin with
two spaces. This makes these strings less mysterious, and it fixes
some cases where short description strings mistakenly did not
begin with two spaces.

llvm-svn: 57521
 2008-10-14 20:25:08 +00:00
Evan Cheng 8428cfc93b Fix typos pointed out by Duncan. Also untabify these files. 
llvm-svn: 57018
 2008-10-03 17:11:58 +00:00
Dan Gohman 0d1e9a8e04 Switch the MachineOperand accessors back to the short names like 
isReg, etc., from isRegister, etc.

llvm-svn: 57006
 2008-10-03 15:45:36 +00:00
Evan Cheng b25f4637dd A Partitioned Boolean Quadratic Programming (PBQP) based register allocator. 
Contributed by Lang Hames.

llvm-svn: 56959
 2008-10-02 18:29:27 +00:00