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Author SHA1 Message Date
Dan Gohman
2d8e5654a8 Revert the main portion of r31856. It was causing BranchFolding 
to break up CFG diamonds by banishing one of the blocks to the end of
the function, which is bad for code density and branch size.

This does pessimize MultiSource/Benchmarks/Ptrdist/yacr2, the
benchmark cited as the reason for the change, however I've examined
the code and it looks more like a case of gaming a particular
branch than of being generally applicable.

llvm-svn: 84803
 2009-10-22 00:03:58 +00:00
Devang Patel
f9d56f4830 Derive metadata hierarchy from Value instead of User. 
llvm-svn: 84801
 2009-10-21 23:57:35 +00:00
Chris Lattner
bf5a89d82b revert r84754, it isn't the right approach. Edwin, please propose 
patches for fixes like this instead of committing them directly.

llvm-svn: 84799
 2009-10-21 23:41:58 +00:00
Jim Grosbach
f79f9afb91 Missing piece of the ARM frame index post-scavenging conditionalization 
llvm-svn: 84798
 2009-10-21 23:40:56 +00:00
Benjamin Kramer
1af3b8ca4d Fix thinko noticed by Chris. 
llvm-svn: 84797
 2009-10-21 23:29:32 +00:00
Dale Johannesen
59fd73831e Adjust testcases for msasm -> alignstack. 
llvm-svn: 84796
 2009-10-21 23:29:12 +00:00
Dale Johannesen
2bb120a97f Rename msasm to alignstack per review. 
llvm-svn: 84795
 2009-10-21 23:28:00 +00:00
Benjamin Kramer
87ca5b37b6 Remove pointless return; at end of function. 
llvm-svn: 84794
 2009-10-21 23:27:54 +00:00
Jim Grosbach
3ae825eccf The spill restore needs to be resolved to the SP/FP just like the spill 
llvm-svn: 84792
 2009-10-21 22:59:56 +00:00
Jim Grosbach
363a67d9c5 Conditionalize ARM/T2 frame index post-scavenging while working out fixes 
for a few bugs.

llvm-svn: 84791
 2009-10-21 22:59:24 +00:00
Benjamin Kramer
a5cb240184 Simplify code. No intended functionality change. 
llvm-svn: 84790
 2009-10-21 22:55:51 +00:00
Devang Patel
7e3d4b199c Use StringRef. 
llvm-svn: 84786
 2009-10-21 21:57:13 +00:00
Bob Wilson
26a4580439 Most of the NEON shuffle instructions do not support 64-bit element types. 
llvm-svn: 84785
 2009-10-21 21:36:27 +00:00
Devang Patel
d10159397a Do not use SmallVector to store MDNode elements. 
llvm-svn: 84784
 2009-10-21 21:25:09 +00:00
Anton Korobeynikov
141a4a2f42 Revert r84764, it breaks mingw build 
llvm-svn: 84783
 2009-10-21 21:15:18 +00:00
Bill Wendling
c1f8119933 XFAIL this test for PPC. 
llvm-svn: 84782
 2009-10-21 21:09:48 +00:00
Jim Grosbach
452de96b04 Improve handling of immediates by splitting 32-bit immediates into two 16-bit 
immediate operands when they will fit into the using instruction.

llvm-svn: 84778
 2009-10-21 20:44:34 +00:00
Anton Korobeynikov
23ea13afbb Add DAG printing for RMW stuff debugging 
llvm-svn: 84776
 2009-10-21 19:18:28 +00:00
Anton Korobeynikov
d233af8049 RMW preprocessing stuff was incorrect. Grab the stuff from x86 backend and disable some tests until it will be clever enough to handle them. 
llvm-svn: 84775
 2009-10-21 19:17:55 +00:00
Anton Korobeynikov
6329ddd231 Implement branch folding 
llvm-svn: 84774
 2009-10-21 19:17:18 +00:00
Anton Korobeynikov
c9ed87ea9a Cosmetic changes, no functionality changes 
llvm-svn: 84773
 2009-10-21 19:16:49 +00:00
Victor Hernandez
0996619220 Make changes to rev 84292 as requested by Chris Lattner. 
Most changes are cleanup, but there is 1 correctness fix:
I fixed InstCombine so that the icmp is removed only if the malloc call is removed (which requires explicit removal because the Worklist won't DCE any calls since they can have side-effects).

llvm-svn: 84772
 2009-10-21 19:11:40 +00:00
Bob Wilson
41f94edfb0 Fix NEON VST2LN instruction encoding. 
Patch by Johnny Chen.

llvm-svn: 84767
 2009-10-21 17:54:01 +00:00
Bob Wilson
5f9ea75e2b Revert 84732. It was the wrong fix. 
llvm-svn: 84766
 2009-10-21 17:52:34 +00:00
Devang Patel
7137e5f065 Incorporate various suggestions Chris gave during metadata review. 
- i < getNumElements()  instead of getNumElements() > i
- Make setParent() private
- Fix use of resizeOperands
- Reset HasMetadata bit after removing all metadata attached to an instruction
- Efficient use of iterators

llvm-svn: 84765
 2009-10-21 17:33:41 +00:00
Sanjiv Gupta
9e78b53be3 Build shared lib instead of an archive. 
llvm-svn: 84764
 2009-10-21 17:27:23 +00:00
Jim Grosbach
8b0af4b521 Cleanup of frame index scavenging. Better code flow and more accurately 
handles T2 and ARM use cases.

llvm-svn: 84761
 2009-10-21 15:26:21 +00:00
Oscar Fuentes
56b9c21b71 Two corrections for docs/CMake.html. 
Patch by Victor Zverovich!

llvm-svn: 84759
 2009-10-21 13:22:20 +00:00
Torok Edwin
a8a12b7d98 Fix PR5262: when folding select into PHI, make sure all operands are available 
in the PHI's Basic Block. This uses a conservative approach, because we don't
have dominator info in instcombine.

llvm-svn: 84754
 2009-10-21 10:49:00 +00:00
Sanjiv Gupta
d6fd961c5c Add a pass to overlay pic16 data sections for function frame and automatic 
variables. This pass can be invoked by llvm-ld or opt to traverse over the call graph 
to detect what function frames and their automatic variables can be overlaid.
Currently this builds an archive , but needs to be changed to a loadable module.

llvm-svn: 84753
 2009-10-21 10:42:44 +00:00
Sanjiv Gupta
021ed336bd Added more options to mcc16 driver. 
llvm-svn: 84752
 2009-10-21 10:38:59 +00:00
Evan Cheng
275a09e55d Match more patterns to movt. 
llvm-svn: 84751
 2009-10-21 08:15:52 +00:00
Evan Cheng
69e133fd77 Need a comma after imp-use. 
llvm-svn: 84749
 2009-10-21 07:56:02 +00:00
Douglas Gregor
fecaeae94b De-bork CMake build 
llvm-svn: 84744
 2009-10-21 06:01:54 +00:00
Chris Lattner
683419400b Set comment string, patch by Johnny Chen! 
llvm-svn: 84743
 2009-10-21 05:07:57 +00:00
Chris Lattner
82599d2b0e make GVN work better when TD is not around: 
"In the existing code, if the load and the value to replace it with are
of different types *and* target data is available, it tries to use the
target data to coerce the replacement value to the type of the load.
Otherwise, it skips all effort to handle the type mismatch and just
feeds the wrongly-typed replacement value to replaceAllUsesWith, which
triggers an assertion.

The patch replaces it with an outer if checking for type mismatch, and
an inner if-else that checks whether target data is available and, if
not, returns false rather than trying to replace the load."

Patch by Kenneth Uildriks!

llvm-svn: 84739
 2009-10-21 04:11:19 +00:00
Chris Lattner
690911b253 tidy 
llvm-svn: 84738
 2009-10-21 04:10:24 +00:00
Bob Wilson
02d3df4a87 Fix some more NEON instruction encoding problems. 
Thanks to Johnny Chen for discovering the problem.

llvm-svn: 84732
 2009-10-21 02:27:20 +00:00
Devang Patel
64fe3f9be0 Do not remove dead metadata for now. 
llvm-svn: 84731
 2009-10-21 02:21:34 +00:00
Bob Wilson
e85a3142bc Leave some NEON instruction encoding bits unspecified instead of setting 
a default value of zero.  This is important for decoding the instructions.
Patch by Johnny Chen, with some changes from me, too.

llvm-svn: 84730
 2009-10-21 02:15:46 +00:00
Mikhail Glushenkov
f7fe2d2ea9 Clarify documentation on multi_val options. 
llvm-svn: 84729
 2009-10-21 02:13:52 +00:00
Mikhail Glushenkov
33e504aef1 Implement any_[not_]empty and list versions of switch_on and [not_]empty. 
Useful for OptionPreprocessor.

llvm-svn: 84728
 2009-10-21 02:13:13 +00:00
Dan Gohman
c74da745a7 Revert r84658 and r84691. They were causing llvm-gcc bootstrap to fail. 
llvm-svn: 84727
 2009-10-21 01:44:44 +00:00
Chris Lattner
2363ec8194 IPSCCP is missing stuff. 
llvm-svn: 84725
 2009-10-21 01:10:37 +00:00
Bill Wendling
5736c06ae3 This is passing on Darwin PPC. 
llvm-svn: 84723
 2009-10-21 00:51:40 +00:00
Jeffrey Yasskin
4ea1de7bcf Delete the MacOSJITEventListener per echristo's request. It was disabled by 
default and didn't work anyway.

llvm-svn: 84720
 2009-10-21 00:43:48 +00:00
Anton Korobeynikov
7c7a801467 Add note 
llvm-svn: 84713
 2009-10-21 00:14:15 +00:00
Anton Korobeynikov
f7e27bb17e Be crazy and assert in case of unsupported modifier passed. 
llvm-svn: 84712
 2009-10-21 00:13:58 +00:00
Anton Korobeynikov
3b90c55321 Handle external symbols 
llvm-svn: 84711
 2009-10-21 00:13:42 +00:00
Anton Korobeynikov
d104087bfe Distinguish between pcrel imm operands and 'normal' ones. Fix fixes gross weirdness of asmprinting. 
llvm-svn: 84710
 2009-10-21 00:13:25 +00:00