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28 Commits

Author SHA1 Message Date
Sanjay Patel
6ce3689f46 mop up: "Don’t duplicate function or class name at the beginning of the comment." 
llvm-svn: 218218
 2014-09-21 14:48:16 +00:00
Benjamin Kramer
da144ed5a2 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
Sanjay Patel
def1964051 fixed a few typos in comments 
llvm-svn: 211634
 2014-06-24 21:11:51 +00:00
Craig Topper
b3cfc7916b [C++11] Add 'override' keyword to virtual methods that override their base class. 
llvm-svn: 203220
 2014-03-07 09:26:03 +00:00
Benjamin Kramer
23f676e21d 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
386bd314a1 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
Craig Topper
e345216c48 Use SmallVectorImpl instead of SmallVector as method argument to avoid specifying vector size. 
llvm-svn: 185513
 2013-07-03 05:16:59 +00:00
Bill Schmidt
28daa2bbf4 This patch addresses bug 15031. 
The common code in the post-RA scheduler to break anti-dependencies on the
critical path contained a flaw.  In the reported case, an anti-dependency
between the overlapping registers %X4 and %R4 exists:

	%X29<def> = OR8 %X4, %X4
	%R4<def>, %X3<def,dead,tied3> = LBZU 1, %X3<kill,tied1>

The unpatched code breaks the dependency by replacing %R4 and its uses
with %R3, the first register on the available list.  However, %R3 and
%X3 overlap, so this creates two overlapping definitions on the same
instruction.

The fix is straightforward, preventing selection of a register that
overlaps any other defined register on the same instruction.

The test case is reduced from the bug report, and verifies that we no
longer produce "lbzu 3, 1(3)" when breaking this anti-dependency.

llvm-svn: 173706
 2013-01-28 18:36:58 +00:00
Chandler Carruth
a98c778194 Sort includes for all of the .h files under the 'lib' tree. These were 
missed in the first pass because the script didn't yet handle include
guards.

Note that the script is now able to handle all of these headers without
manual edits. =]

llvm-svn: 169224
 2012-12-04 07:12:27 +00:00
Andrew Trick
3e809a2fba Move RegisterClassInfo.h. 
Allow targets to access this API. It's required for RegisterPressure.

llvm-svn: 158102
 2012-06-06 20:29:31 +00:00
Benjamin Kramer
5cfc07cf35 CriticalAntiDepBreaker: Replace a SmallSet of regs with a much denser BitVector. 
llvm-svn: 152999
 2012-03-17 20:22:57 +00:00
Jakob Stoklund Olesen
36ac2b0ece Teach antidependency breakers to use RegisterClassInfo. 
No functional change was intended.

llvm-svn: 133202
 2011-06-16 21:56:21 +00:00
Devang Patel
6455c3f6ae Update DBG_VALUEs while breaking anti dependencies. 
llvm-svn: 132487
 2011-06-02 21:26:52 +00:00
Mikhail Glushenkov
e8ece9bd63 Typo. 
llvm-svn: 125232
 2011-02-09 22:55:48 +00:00
Andrew Trick
3286438277 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.

llvm-svn: 125089
 2011-02-08 17:39:46 +00:00
Andrew Trick
f861447393 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.

llvm-svn: 118032
 2010-11-02 18:16:45 +00:00
Bill Wendling
5803639a36 Use std::vector instead of TargetRegisterInfo::FirstVirtualRegister. This time 
make sure to allocate enough space in the std::vector.

llvm-svn: 108449
 2010-07-15 19:58:14 +00:00
Chris Lattner
44b03b850b revert bill's patches in an attempt to fix the buildbot. 
llvm-svn: 108419
 2010-07-15 06:51:46 +00:00
Bill Wendling
ffdbca76f9 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.

llvm-svn: 108411
 2010-07-15 05:56:32 +00:00
Evan Cheng
46b89e05fd 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. 
llvm-svn: 106091
 2010-06-16 07:35:02 +00:00
Dan Gohman
60e18d1d07 Make BreakAntiDependencies' SUnits argument const, and make the Begin 
and End arguments by-value rather than by-reference.

llvm-svn: 101830
 2010-04-19 23:11:58 +00:00
Jim Grosbach
0beaad246d Anti-dependency breaking needs to be careful regarding instructions with 
multiple register definitions.

llvm-svn: 92864
 2010-01-06 22:21:25 +00:00
Jim Grosbach
2101815d36 80 column and whitespace cleanup 
llvm-svn: 92837
 2010-01-06 16:48:02 +00:00
David Goodwin
8954ccb109 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. 
llvm-svn: 89471
 2009-11-20 19:32:48 +00:00
David Goodwin
629a685f05 Do a scheduling pass ignoring anti-dependencies to identify candidate registers that should be renamed. 
llvm-svn: 85939
 2009-11-03 20:57:50 +00:00
David Goodwin
ae4f8e01b0 Make AntiDepReg.h internal. 
llvm-svn: 85412
 2009-10-28 18:29:54 +00:00
David Goodwin
0b5b62bfcf 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. 
llvm-svn: 85166
 2009-10-26 22:31:16 +00:00
David Goodwin
f6199e95b0 Break anti-dependence breaking out into its own class. 
llvm-svn: 85127
 2009-10-26 16:59:04 +00:00