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Author SHA1 Message Date
Bill Wendling
c9cfc16363 The ARM EH experiment worked! 
Place the LSDA into the TEXT section for ARM platforms. This involves making the
encoding indirect, pcrel, and sdata4 instead of an absolute pointer. The
references to the type infos are then non-lazy pointers. Revision 98019 changed
the encoding of non-lazy pointers to add the symbol to the non-lazy pointer
definition if it's a local symbol (otherwise, it's external and set to '0' so
that the loader can adjust it to the real value). This paved the way for this
change to work on ARM.

llvm-svn: 98068
 2010-03-09 18:31:07 +00:00
Richard Osborne
4077517135 In cases where the carry / borrow unused converted ladd / lsub 
to an add or a sub.

llvm-svn: 98059
 2010-03-09 16:34:25 +00:00
Richard Osborne
e33e24e6cb Canonicalize ladd constant to RHS. 
llvm-svn: 98058
 2010-03-09 16:13:57 +00:00
Richard Osborne
173efed224 Add DAG combine for ladd / lsub. 
llvm-svn: 98057
 2010-03-09 16:07:47 +00:00
Duncan Sands
26e65e7ee8 Attempt to fix random build failures seen when doing highly 
parallel builds: the gold plugin fails to link because the lto
library is in the middle of being written out by the linker.

llvm-svn: 98054
 2010-03-09 09:03:21 +00:00
Evan Cheng
625a7248d6 Allow more cross-rc coalescing. 
llvm-svn: 98048
 2010-03-09 06:38:17 +00:00
Chris Lattner
d51f1bdc58 reapply r98035: 
Now that setStartLabel takes an MCSymbol, we can de-ID'ize
beginScope and RecordSourceLine.

llvm-svn: 98047
 2010-03-09 04:54:43 +00:00
Chris Lattner
43b812b6a8 add some extra checks. I'm not sure why, but this does unbreak a 
failure remaining on mainline.

llvm-svn: 98046
 2010-03-09 04:48:35 +00:00
Evan Cheng
1b43094229 Revert accidental commit. 
llvm-svn: 98045
 2010-03-09 04:04:38 +00:00
Jakob Stoklund Olesen
cc6b4fdf11 Don't do illegal cross-class coalescing. 
llvm-svn: 98044
 2010-03-09 03:56:06 +00:00
Evan Cheng
8277a90f75 - Make the machine cse dumb coalescer (as opposed to the more awesome simple 
coalescer) handle sub-register classes.
- Add heuristics to avoid non-profitable cse. Given the current lack of live
  range splitting, avoid cse when an expression has PHI use and the would be
  new use is in a BB where the expression wasn't already being used.

llvm-svn: 98043
 2010-03-09 03:21:12 +00:00
Dan Gohman
18aa7d328e Don't try to fold V_SET0 and V_SETALLONES to loads in medium and 
large code models.

llvm-svn: 98042
 2010-03-09 03:01:40 +00:00
Bill Wendling
344fec6285 This is part of an LLC-beta test used to test <rdar://problem/6804645>. Please 
bear with the awful code. It won't last in its current state beyond tonight.

llvm-svn: 98040
 2010-03-09 02:46:12 +00:00
Eric Christopher
8875eba06a Speculatively revert r98035. It appears to have caused a set of buildbot 
failures.

llvm-svn: 98039
 2010-03-09 02:36:31 +00:00
Dan Gohman
0d69c61fec Attempt to make this debug output meaningful, both in the case of 
multibyte opcodes and in the case of multiple scopes.

llvm-svn: 98036
 2010-03-09 02:15:05 +00:00
Chris Lattner
c4a74bf48b Now that setStartLabel takes an MCSymbol, we can de-ID'ize 
beginScope and RecordSourceLine.

llvm-svn: 98035
 2010-03-09 02:08:02 +00:00
Chris Lattner
f7ad2622cc change DbgScope to keep track of the start/end label as MCSymbol* 
now that the dependence on ID is removed from MMI.

llvm-svn: 98034
 2010-03-09 01:58:53 +00:00
Dan Gohman
c421549beb Make isLCSSA ignore uses in blocks not reachable from the entry block, 
as LCSSA no longer transforms such uses.

llvm-svn: 98033
 2010-03-09 01:53:33 +00:00
Chris Lattner
a72a32a06b remove a useless optimization: now that label replacement never 
happens, the start/end of a scope can never be the same.

llvm-svn: 98032
 2010-03-09 01:52:43 +00:00
Chris Lattner
d4ce7a73e8 strength reduce MMI::MappedLabel to MMI::isLabelDeleted, 
and add a FIXME about how we are eventually going to zap this
lookup table once mc world domination is complete.

llvm-svn: 98031
 2010-03-09 01:51:43 +00:00
Chris Lattner
73de790f59 inline RemapLabel into its only caller and simplify. 
llvm-svn: 98029
 2010-03-09 01:29:59 +00:00
Daniel Dunbar
8e3e2688b5 MC/Mach-O: Tweak .dump() formatting. 
llvm-svn: 98028
 2010-03-09 01:12:23 +00:00
Daniel Dunbar
e3986eb967 MC/Mach-O: Don't adjust section sizes when aligning zero fill sections, just pad the address. 
llvm-svn: 98027
 2010-03-09 01:12:20 +00:00
Dale Johannesen
d79b87c260 Another place where debug info affected codegen. 
llvm-svn: 98026
 2010-03-09 01:08:11 +00:00
Chris Lattner
4494a28b3c mcstreamerize AsmPrinter::printLabel. 
llvm-svn: 98025
 2010-03-09 01:02:30 +00:00
Jakob Stoklund Olesen
5b150ee899 Add inlining threshold to log output. 
llvm-svn: 98024
 2010-03-09 00:59:53 +00:00
Jakob Stoklund Olesen
3d0157ae7e Disable physical register coalescing when the number of live ranges for the 
physreg becomes ridiculously high.

std::upper_bound may be log(N), but for sufficiently large live intervals, it
becomes log(N)*cachemiss = a long long time.

This patch improves coalescer time by 4500x for a function with 20000
function calls. The generated code is different, but not significantly worse -
the allocator hints are almost as good as physreg coalescing anyway.

llvm-svn: 98023
 2010-03-09 00:59:48 +00:00
Devang Patel
4995bb0450 Start using DIFile. See updated SourceLevelDebugging.html for more information. 
This patch updates LLVMDebugVersion to 8.
Debug info descriptors encoded using LLVMDebugVersion 7 is supported.

Corresponding llvmgcc and clang FE commits are required.

llvm-svn: 98020
 2010-03-09 00:44:10 +00:00
Bill Wendling
a2ed617fa9 Print blank line and clear stubs vector. 
llvm-svn: 98019
 2010-03-09 00:43:34 +00:00
Bill Wendling
a9e3eb7d2d MC-ize the stub printing in ARM. 
llvm-svn: 98018
 2010-03-09 00:40:17 +00:00
Chris Lattner
8147c144d9 add a EmitSymbolValue convenience method to MCStreamer. 
llvm-svn: 98017
 2010-03-09 00:39:24 +00:00
Chris Lattner
db93b91db1 make InlineInfoLabels hold MCSymbol*'s, avoiding 
recomputation of the labels.

llvm-svn: 98016
 2010-03-09 00:31:02 +00:00
Chris Lattner
a583d01e79 mc'ize the last use of PrintLabelName and eliminate PrintLabelName. 
llvm-svn: 98015
 2010-03-09 00:26:09 +00:00
Chris Lattner
644850459d eliminate an argument from PrintRelDirective, sinking 
the one special case into EmitSectionOffset.  MCize
the non-special case in EmitSectionOffset.

llvm-svn: 98014
 2010-03-09 00:17:58 +00:00
Dan Gohman
cc7ed51fa3 Print the correct index in the "match failed at index" message. 
llvm-svn: 98013
 2010-03-09 00:07:36 +00:00
Chris Lattner
06f5a077de remove the suffix form of PrintLabelName, which was only 
used for 'flavor'.

llvm-svn: 98012
 2010-03-09 00:00:57 +00:00
Chris Lattner
183e87502e now that the debug and eh emitters use a common .set counter, 
we can eliminate "flavor".

llvm-svn: 98011
 2010-03-09 00:00:15 +00:00
Chris Lattner
99ca33d324 move .set generation out of DwarfPrinter into AsmPrinter and 
MCize it.

llvm-svn: 98010
 2010-03-08 23:58:37 +00:00
Evan Cheng
8afdea401a Don't waste time trying to CSE labels, phis, inline asm. Definitely avoid cse implicit-def for obvious performance reason. 
llvm-svn: 98009
 2010-03-08 23:49:12 +00:00
Evan Cheng
ca86fb517c Restrict machine cse to really trivial coalescing. Leave the heavy lifting to a real coalescer. 
llvm-svn: 98007
 2010-03-08 23:28:08 +00:00
Chris Lattner
10d571f349 simplify EmitSectionOffset to always use .set if it is 
available, the only thing this affects is that we produce
.set in one case we didn't before, which shouldn't harm
anything.  Make EmitSectionOffset call EmitDifference
instead of duplicating it.

llvm-svn: 98005
 2010-03-08 23:23:25 +00:00
Chris Lattner
d8ca814af2 don't reset defaults. 
llvm-svn: 98004
 2010-03-08 23:18:21 +00:00
Chris Lattner
9dfcbeaca1 Remove a version of EmitDifference. 
llvm-svn: 98002
 2010-03-08 23:02:59 +00:00
Bob Wilson
116599fe52 Fix a crash compiling 254.gap for Thumb2. The Thumb2 add/sub with 12-bit 
immediate instructions cannot set the condition codes, so they do not have
the extra cc_out operand.  We hit an assertion during tail duplication
because the instruction being duplicated had more operands that expected.

llvm-svn: 98001
 2010-03-08 22:56:15 +00:00
Evan Cheng
db47eab2a3 Re-commit 97860 with fix. getMallocAllocatedType may return null. 
llvm-svn: 98000
 2010-03-08 22:54:36 +00:00
Chris Lattner
81bf3f933d eliminate a form of PrintLabelName. 
llvm-svn: 97999
 2010-03-08 22:52:49 +00:00
Chris Lattner
bbd8af41d3 remove another form of EmitReference. 
llvm-svn: 97998
 2010-03-08 22:50:36 +00:00
Chris Lattner
4ccfa3d315 eliminate the non-MCSymbol versions of EmitReference. 
llvm-svn: 97997
 2010-03-08 22:47:57 +00:00
Chris Lattner
2bbaab13d8 mc'ize EmitLabel. 
llvm-svn: 97996
 2010-03-08 22:44:40 +00:00
Chris Lattner
bfd38653e6 merge DIEObjectLabel and DIEDwarfLabel into DIELabel. 
Yes, DIE you fiendish labels, die all of you.

llvm-svn: 97995
 2010-03-08 22:31:46 +00:00