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19 Commits

Author SHA1 Message Date
Andrew Trick
1525260b3e Move RegisterClassInfo.h. 
Allow targets to access this API. It's required for RegisterPressure.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158102 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-06-06 20:29:31 +00:00
Benjamin Kramer
cff4ad768e CriticalAntiDepBreaker: Replace a SmallSet of regs with a much denser BitVector. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152999 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-03-17 20:22:57 +00:00
Jakob Stoklund Olesen
fa796dd720 Teach antidependency breakers to use RegisterClassInfo. 
No functional change was intended.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133202 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-16 21:56:21 +00:00
Devang Patel
e29e8e100e Update DBG_VALUEs while breaking anti dependencies. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132487 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-02 21:26:52 +00:00
Mikhail Glushenkov
35edc42f98 Typo. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125232 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-09 22:55:48 +00:00
Andrew Trick
bc4bd92d52 Fix PostRA antidependence breaker. 
Avoid using the same register for two def operands or and earlyclobber
def and use operand. This fixes PR8986 and improves on the prior fix
for rdar://problem/8959122.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125089 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-08 17:39:46 +00:00
Andrew Trick
4638852696 Fixes <rdar://problem/8612856>: During postRAsched, the antidependence 
breaker needs to check all definitions of the antidepenent register to
avoid multiple defs of the same new register.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118032 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-02 18:16:45 +00:00
Bill Wendling
9c2a034730 Use std::vector instead of TargetRegisterInfo::FirstVirtualRegister. This time 
make sure to allocate enough space in the std::vector.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108449 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-15 19:58:14 +00:00
Chris Lattner
7fa889b946 revert bill's patches in an attempt to fix the buildbot. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108419 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-15 06:51:46 +00:00
Bill Wendling
f7f72bc1ea Use std::vector instead of a hard-coded array. The length of that array could 
get *very* large, but we only need it to be the size of thenumber of pregs.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108411 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-15 05:56:32 +00:00
Evan Cheng
46df4eb46e Make post-ra scheduling, anti-dep breaking, and register scavenger (conservatively) aware of predicated instructions. This enables ARM to move if-conversion before post-ra scheduler. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106091 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-16 07:35:02 +00:00
Dan Gohman
66db3a0f10 Make BreakAntiDependencies' SUnits argument const, and make the Begin 
and End arguments by-value rather than by-reference.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101830 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-19 23:11:58 +00:00
Jim Grosbach
80c2b0d9ef Anti-dependency breaking needs to be careful regarding instructions with 
multiple register definitions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92864 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-06 22:21:25 +00:00
Jim Grosbach
2973b57093 80 column and whitespace cleanup 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92837 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-06 16:48:02 +00:00
David Goodwin
557bbe6b5d Remove some old experimental code that is no longer needed. Remove additional, speculative scheduling pass as its cost did not translate into significant performance improvement. Minor tweaks. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89471 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-20 19:32:48 +00:00
David Goodwin
4de099d8ca Do a scheduling pass ignoring anti-dependencies to identify candidate registers that should be renamed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85939 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-03 20:57:50 +00:00
David Goodwin
82c7248518 Make AntiDepReg.h internal. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85412 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-28 18:29:54 +00:00
David Goodwin
e10deca33e Allow the aggressive anti-dep breaker to process the same region multiple times. This is necessary because new anti-dependencies are exposed when "current" ones are broken. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85166 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-26 22:31:16 +00:00
David Goodwin
2e7be612d5 Break anti-dependence breaking out into its own class. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85127 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-26 16:59:04 +00:00