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Author SHA1 Message Date
Evan Cheng
ba3f6fa814 Only try to sink immediate when TLI is not null. It needs to check if immediate would fit in target addressing field. 
llvm-svn: 65268
 2009-02-22 07:31:19 +00:00
Nick Lewycky
ada4032dc9 Regenerate. 
llvm-svn: 65250
 2009-02-21 22:38:49 +00:00
Nick Lewycky
a4157c4b8a Remove tests for flex/bison which are no longer needed by LLVM. 
llvm-svn: 65249
 2009-02-21 22:36:26 +00:00
Nick Lewycky
2c8f0fd57f Don't sign extend the char when expanding char -> int during 
load(bitcast(char[4] to i32*)) evaluation.

llvm-svn: 65246
 2009-02-21 20:50:42 +00:00
Daniel Dunbar
4500ec59c2 Add makefile debugging target; use "make print-FOO" to print the 
value/definition/origin of FOO.

llvm-svn: 65245
 2009-02-21 20:42:39 +00:00
Richard Pennington
7a2ebd7d09 bug 3610: Floating point vaarg not softened. 
llvm-svn: 65239
 2009-02-21 19:11:18 +00:00
Ted Kremenek
17e17c7b44 Add version of StringsEqualNoCase that takes two null-terminated C-strings and compares up to 'len' characters. I tend to screw up string comparison functions, so anyone who is interested please review this\! 
llvm-svn: 65236
 2009-02-21 18:25:30 +00:00
Anton Korobeynikov
5df82e3e25 Drop bunch of half-working stuff in the ext_weak linkage support. 
Now we're using one gross, but quite robust hack :) (previous ones
did not work, for example, when ext_weak symbol was used deep inside
constant expression in the initializer).

The proper fix of this problem will require some quite huge asmprinter
changes and that's why was postponed. This fixes PR3629 by the way :)

llvm-svn: 65230
 2009-02-21 11:53:32 +00:00
Nick Lewycky
4d6ea70a06 Pass different flags on different platforms when building PIC. 
llvm-svn: 65229
 2009-02-21 08:41:09 +00:00
Evan Cheng
74d0dda00f Add AddrModeMatcher.cpp 
llvm-svn: 65228
 2009-02-21 07:05:11 +00:00
Evan Cheng
d4dc06f55a If two-address def is dead and the instruction does not define other registers, and it doesn't produce side effects, just delete the instruction. 
llvm-svn: 65218
 2009-02-21 03:14:25 +00:00
Evan Cheng
56b43045f6 Teach LSR sink to sink the immediate portion of the common expression back into uses if they fit in address modes of all the uses. 
llvm-svn: 65215
 2009-02-21 02:06:47 +00:00
Bill Wendling
bfc216c45a Make sure this doesn't access .end() too. 
llvm-svn: 65213
 2009-02-21 01:11:36 +00:00
Gabor Greif
8c7604ed23 fix and clean up a comment 
llvm-svn: 65212
 2009-02-21 01:09:07 +00:00
Bill Wendling
96430050a5 Make sure we don't dereference the .end() of the container. 
llvm-svn: 65211
 2009-02-21 01:07:26 +00:00
Chris Lattner
3adae91c70 rename a function to indicate that it checks for profitability as well 
as legality.  Make load sinking and gep sinking more careful: we only
do it when it won't pessimize loads from the stack.  This has the added
benefit of not producing code that is unanalyzable to SROA.

llvm-svn: 65209
 2009-02-21 00:46:50 +00:00
Bill Wendling
66c3ffa2de Propagate more debug loc infos. This also includes some code cleaning. 
llvm-svn: 65207
 2009-02-21 00:43:56 +00:00
Bill Wendling
09289bc433 We need to propagate the debug location information even when dealing with the 
prologue/epilogue.

llvm-svn: 65206
 2009-02-21 00:32:08 +00:00
Misha Brukman
10d6b192a4 * Fixed spelling 
* Linters now return their information instead of printing it, to
  enable easier unittesting
* Added support for finding tabs in files, added to C++ linter

llvm-svn: 65202
 2009-02-20 23:44:54 +00:00
Dan Gohman
c9cfc596a3 Fix a bug that David Greene found in the DAGCombiner's logic 
that checks whether it's safe to transform a store of a bitcast
value into a store of the original value.

llvm-svn: 65201
 2009-02-20 23:29:13 +00:00
Misha Brukman
5cfd666bde Removed trailing whitespace. 
llvm-svn: 65199
 2009-02-20 23:04:06 +00:00
Misha Brukman
4637ef9b4b Removed trailing whitespace. 
llvm-svn: 65197
 2009-02-20 22:54:36 +00:00
Misha Brukman
7ee4196e74 Removed trailing whitespace. 
llvm-svn: 65196
 2009-02-20 22:51:36 +00:00
Misha Brukman
13dd5f564d Keep the newline character at the end of the lines whose trailing whitespace we 
are deleting; otherwise, everything ends up on a single line.

llvm-svn: 65185
 2009-02-20 22:30:46 +00:00
Misha Brukman
9d4bf3a090 Only strip the newline character at the end of the lines that we're considering 
for length and for trailing whitespace; otherwise, the whitespace themselves
will also be removed.

llvm-svn: 65182
 2009-02-20 22:28:45 +00:00
Misha Brukman
380e3db1b4 Fixed lint errors: 
* Alphabetized #includes
* Removed trailing whitespace
* Wrapped or shortened lines over 80 chars

llvm-svn: 65181
 2009-02-20 22:20:18 +00:00
Bill Wendling
0a1cd0bf22 We have logic in there to emit a default debugging label at the beginning of a 
function. Emitting another label after the prologue messes up the debugging. We
are doing that because the first DebugLoc object it sees is different from the
previous, which was nothing. Check for this situation, and don't emit one if
it's the first.

llvm-svn: 65180
 2009-02-20 22:19:20 +00:00
Evan Cheng
c2541a4450 Fix strange logic in CollectIVUsers used to determine whether all uses are 
addresses, part 1. This fixes an obvious logic bug. Previously if the only
in-loop use is a PHI, it would return AllUsesAreAddresses as true.

llvm-svn: 65178
 2009-02-20 22:16:49 +00:00
Dan Gohman
b8783d240b Simplify code and reduce indentation. No functionality change. 
llvm-svn: 65167
 2009-02-20 21:27:23 +00:00
Dan Gohman
4612c1d92f Fix 80-column violations. 
llvm-svn: 65159
 2009-02-20 21:06:57 +00:00
Dan Gohman
33c5714553 It's not necessary to check if Base is null here. 
llvm-svn: 65157
 2009-02-20 21:05:23 +00:00
Evan Cheng
c40c3e28f7 Support return of MMX values in 64-bit mode. 
llvm-svn: 65152
 2009-02-20 20:43:02 +00:00
Bill Wendling
9e675be841 - Early exit a nested block. 
- Correct comment.
- Whitespace changes.

llvm-svn: 65149
 2009-02-20 20:40:28 +00:00
Dan Gohman
271a6f1142 Add a comment about how Imm can be used for loop-variant values. 
llvm-svn: 65147
 2009-02-20 20:29:04 +00:00
Torok Edwin
b399b47942 add note about sin 
llvm-svn: 65137
 2009-02-20 18:42:06 +00:00
Evan Cheng
d8aad94754 Factor address mode matcher out of codegen prepare to make it available to other passes, e.g. loop strength reduction. 
llvm-svn: 65134
 2009-02-20 18:24:38 +00:00
Zhou Sheng
0c2e862ad0 Just roll back the previous change to -mem2reg. 
Will re-think about this according to Chris's comments.

llvm-svn: 65126
 2009-02-20 17:49:33 +00:00
Zhou Sheng
580c176f47 patch to update the line number information in pass -mem2reg. 
Currently this pass will delete the variable declaration info, 
and keep the line number info. But the kept line number info is not updated, 
and some is redundant or not correct, this patch just updates those info.

llvm-svn: 65123
 2009-02-20 16:31:35 +00:00
Owen Anderson
8d12de1c25 Fix a crash in the pre-alloc splitter exposed by recent codegen changes. 
llvm-svn: 65121
 2009-02-20 10:02:23 +00:00
Owen Anderson
9268f1ec92 Add a quick pass to the stack slot colorer to eliminate some trivially redundant spills after coloring. 
Ideally these would never get created in the first place, but until we enhance the spiller to have a more
global picture of what's happening, this is necessary for code quality in some circumstances.

llvm-svn: 65120
 2009-02-20 09:11:36 +00:00
Chris Lattner
c25ea86424 make these tests pass when run on a G5. 
llvm-svn: 65117
 2009-02-20 07:10:11 +00:00
Dan Gohman
4e8fc41d48 Implement "superhero" strength reduction, or full strength 
reduction of address calculations down to basic pointer arithmetic.
This is currently off by default, as it needs a few other features
before it becomes generally useful. And even when enabled, full
strength reduction is only performed when it doesn't increase
register pressure, and when several other conditions are true.

This also factors out a bunch of exisiting LSR code out of
StrengthReduceStridedIVUsers into separate functions, and tidies
up IV insertion. This actually decreases register pressure even
in non-superhero mode. The change in iv-users-in-other-loops.ll
is an example of this; there are two more adds because there are
two fewer leas, and there is less spilling.

llvm-svn: 65108
 2009-02-20 04:17:46 +00:00
Bill Wendling
75751a4769 Add an accessor method to DwarfWriter to tell of debugging info should be emitted. 
llvm-svn: 65092
 2009-02-20 00:44:43 +00:00
Bill Wendling
9a2bbc9d15 Add a default debug location object to the Machine Function. It's used to emit a default debugging label at the beginning of a function. 
llvm-svn: 65091
 2009-02-20 00:42:52 +00:00
Bill Wendling
983f839148 Temporarily revert r65065. It was causing test failures. 
llvm-svn: 65068
 2009-02-19 21:57:07 +00:00
Bill Wendling
1c0692657d Print out debug info when printing the machine instruction. 
llvm-svn: 65067
 2009-02-19 21:44:55 +00:00
Bill Wendling
9af8f830c0 Check for -fast here too. 
llvm-svn: 65065
 2009-02-19 21:23:54 +00:00
Bill Wendling
4a86875529 Generate these labels when we're in "fast" mode, not simply when we're no in 
"optimize-for-size" mode.

llvm-svn: 65064
 2009-02-19 21:12:54 +00:00
Dale Johannesen
bd87541147 Describe tail merging's use of InsertBranch. 
llvm-svn: 65062
 2009-02-19 19:40:21 +00:00
Dan Gohman
eb7aa11e26 Use DEBUG() instead of passing *DOUT to WriteAsOperand, 
since the latter just passes a null reference when
debugging is not enabled.

llvm-svn: 65060
 2009-02-19 19:32:06 +00:00