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Author SHA1 Message Date
Chris Lattner
7cd70b8066 fix PR6533 by updating the br(xor) code to remember the case 
when it looked past a trunc.

llvm-svn: 98203
 2010-03-10 23:46:44 +00:00
Dale Johannesen
29afbd39e4 Cosmetic: lengthen names and improve comments. 
llvm-svn: 98202
 2010-03-10 23:37:24 +00:00
Bob Wilson
e49828788b Fix an obvious typo in an assert. 
Patch by Sean Callanan.

llvm-svn: 98200
 2010-03-10 22:38:45 +00:00
Bill Wendling
df325dee9d Add a bit along with the MCSymbols stored in the MachineModuleInfo maps that 
indicates that an MCSymbol is external or not. (It's true if it's external.)
This will be used to specify the correct information to add to non-lazy
pointers. That will be explained further when this bit is used.

llvm-svn: 98199
 2010-03-10 22:34:10 +00:00
Dale Johannesen
987770c05d Progress towards shepherding debug info through SelectionDAG. 
No functional effect yet.  This is still evolving and should
not be viewed as final.

llvm-svn: 98195
 2010-03-10 22:13:47 +00:00
Chris Lattner
d14ff9f87b move PR6576 here. 
llvm-svn: 98194
 2010-03-10 21:42:42 +00:00
Chris Lattner
37594c7a86 add DESTDIR support for TOOLALIAS, for PR6557, patch by 
Matthias Klose!

llvm-svn: 98193
 2010-03-10 21:27:53 +00:00
Dan Gohman
4c22c7a665 Fix another bitwidth calculation to handle vector types; based on a 
patch by Micah Villmow for PR6572.

llvm-svn: 98188
 2010-03-10 21:04:53 +00:00
Daniel Dunbar
a1827f9853 MC/Mach-O: Use the MCAssembler symbol map instead of reconstructing. 
llvm-svn: 98187
 2010-03-10 20:58:31 +00:00
Daniel Dunbar
fc99f844eb MC: Move the backend section and symbol data maps to MCAssembler. 
llvm-svn: 98186
 2010-03-10 20:58:29 +00:00
Daniel Dunbar
8e45a4269e Remove unneeded declarations. 
llvm-svn: 98185
 2010-03-10 20:58:25 +00:00
Jim Grosbach
c7983b0537 Make sure the LR gets pushed in functions that use vaargs. This fixes 
400.perlbench for the nightly tests.

llvm-svn: 98183
 2010-03-10 20:01:30 +00:00
Jim Grosbach
283a9fe231 comment why we use custom epilogue for t1 functions using vaargs. 
llvm-svn: 98182
 2010-03-10 19:59:47 +00:00
Dale Johannesen
5edf11aad3 Fix another place where DEBUG_VALUE affected codegen. 
llvm-svn: 98181
 2010-03-10 19:57:56 +00:00
Dan Gohman
07eb9cb4c2 Add a DominatorTree argument to isLCSSA so that it doesn't have to 
compute a set of reachable blocks for itself each time it is called, which
is fairly frequently.

llvm-svn: 98179
 2010-03-10 19:38:49 +00:00
Dan Gohman
d9d4889ccc Constant-fold GEP-of-GEP into a single GEP. 
llvm-svn: 98178
 2010-03-10 19:31:51 +00:00
Dan Gohman
7fa1298057 Fix whitespace. 
llvm-svn: 98173
 2010-03-10 19:00:54 +00:00
Johnny Chen
db62f78f10 Factored out the disassembly printing of CPS option, MSR mask, and Negative Zero 
operands into their own PrintMethod, in order not to pollute the printOperand()
impl with disassembly only Imm modifiers.

llvm-svn: 98172
 2010-03-10 18:59:38 +00:00
Tobias Grosser
64dd8298f5 Fix make check with cmake/lit 
PR6540: Set the newly introduced variables ENABLE_SHARED and
SHLIBPATH_VAR in lit.site.cfg not only in the autoconf build, but also
in a cmake one.

llvm-svn: 98171
 2010-03-10 18:41:59 +00:00
Richard Osborne
e018a3f184 The backend now makes a reasonable job of targeting lmul / macc 
llvm-svn: 98169
 2010-03-10 18:14:47 +00:00
Richard Osborne
41c5f84f1d Handle MVT::i64 type in DAG combine for ISD::ADD. Fold 64 bit 
expression add(add(mul(x,y),a),b) -> lmul(x,y,a,b) if all
operands are zero extended.

llvm-svn: 98168
 2010-03-10 18:12:27 +00:00
Daniel Dunbar
8f981447a6 Remove unneeded includes. 
llvm-svn: 98167
 2010-03-10 17:56:05 +00:00
Bob Wilson
92058c0473 Testcase for pr6552. I changed the code to use "ip" instead of "fp" because 
the "fp" register name is not valid on Darwin, and the "ip" register name was
broken for all ARM targets.

llvm-svn: 98166
 2010-03-10 17:54:11 +00:00
Richard Osborne
8e7cdbef01 Fix checking of intermediates having one use in isADDADDMUL 
llvm-svn: 98164
 2010-03-10 17:16:29 +00:00
Richard Osborne
a1f3ed1aeb Extract recognition of patterns such as add(add(mul(x,y),a),b) 
into a seperate function.

llvm-svn: 98162
 2010-03-10 17:10:35 +00:00
Richard Osborne
6120fdbd30 Fix thinko. 
llvm-svn: 98158
 2010-03-10 16:27:11 +00:00
Richard Osborne
d400202a43 Fold add(add(mul(x,y),a),b) -> lmul(x,y,a,b) if the intermediate 
results are unused elsewhere.

llvm-svn: 98157
 2010-03-10 16:19:31 +00:00
Benjamin Kramer
adf47face1 Remove duplicated code. No functionality change. 
llvm-svn: 98156
 2010-03-10 16:04:20 +00:00
Dale Johannesen
b68b96c0f6 Fix a bug in DEBUG_VALUE handling Devang ran into. 
I'll get this loop right yet.

llvm-svn: 98155
 2010-03-10 15:06:26 +00:00
Richard Osborne
c19c2bd177 Prefer LMUL to MACCU as LMUL has no tied operands. 
llvm-svn: 98153
 2010-03-10 13:27:10 +00:00
Richard Osborne
43210638f1 Custom lower (S|U)MUL_LOHI -> MACC(S|U) 
llvm-svn: 98152
 2010-03-10 13:20:07 +00:00
Richard Osborne
ed6df27ad0 Fix indentation 
llvm-svn: 98151
 2010-03-10 11:42:05 +00:00
Richard Osborne
c88a8e8d66 Lower add (mul a, b), c into MACCU / MACCS nodes which translate 
directly to the maccu / maccs instructions. We handle this in
ExpandADDSUB since after type legalisation it is messy to
recognise these operations.

llvm-svn: 98150
 2010-03-10 11:41:08 +00:00
Richard Osborne
6c55bfe516 Convert test to FileCheck. 
llvm-svn: 98148
 2010-03-10 11:24:03 +00:00
Chris Lattner
e34dde1e83 move three lowering hooks from MAI to TLOF and make one of them 
semantic instead of syntactic.  This completes MCization of
darwin/x86[-64]!

llvm-svn: 98145
 2010-03-10 07:20:42 +00:00
Evan Cheng
1f7af27386 Fix typo. 
llvm-svn: 98142
 2010-03-10 07:07:55 +00:00
Evan Cheng
96e1e20fd5 Unbreak test on Linux. 
llvm-svn: 98141
 2010-03-10 07:07:45 +00:00
Dale Johannesen
c9611b6d0a This survived a bootstrap, so let's try 98104 again. 
llvm-svn: 98137
 2010-03-10 05:45:47 +00:00
Evan Cheng
668ceddeec Enable machine cse pass. 
llvm-svn: 98132
 2010-03-10 03:07:41 +00:00
Chris Lattner
270a61db96 mcize the rest of EH emission, only one more directive missing 
for darwin/x86 to be completely mcized.

llvm-svn: 98130
 2010-03-10 02:48:06 +00:00
Chris Lattner
60b9c3a333 add missing filename! 
llvm-svn: 98125
 2010-03-10 02:29:31 +00:00
Chris Lattner
ed0b8d36e4 set the temporary bit on MCSymbols correctly. 
llvm-svn: 98124
 2010-03-10 02:25:11 +00:00
Dan Gohman
3f53795624 Fix a comment. 
llvm-svn: 98122
 2010-03-10 02:18:48 +00:00
Evan Cheng
f75338cfcb Add a couple more heuristics to neuter machine cse some more. 
1. Be careful with cse "cheap" expressions. e.g. constant materialization. Only cse them when the common expression is local or in a direct predecessor. We don't want cse of cheap instruction causing other expressions to be spilled.
2. Watch out for the case where the expression doesn't itself uses a virtual register. e.g. lea of frame object. If the common expression itself is used by copies (common for passing addresses to function calls), don't perform the cse. Since these expressions do not use a register, it creates a live range but doesn't close any, we want to be very careful with increasing register pressure.

Note these are heuristics so machine cse doesn't make register allocator unhappy. Once we have proper live range splitting and re-materialization support in place, these should be evaluated again.

Now machine cse is almost always a win on llvm nightly tests on x86 and x86_64.

llvm-svn: 98121
 2010-03-10 02:12:03 +00:00
Daniel Dunbar
54df3cead6 MC/Mach-O: Resolve a FIXME; these relocation types are no longer semanticaly different. 
llvm-svn: 98120
 2010-03-10 02:10:29 +00:00
Dan Gohman
107b6faef5 Clarify the documentation for MachineFunctionPasses. 
llvm-svn: 98119
 2010-03-10 01:29:39 +00:00
Chris Lattner
554f323da8 eliminate MCContext::CreateSymbol and CreateTemporarySymbol. 
Add a new GetOrCreateTemporarySymbol method and a version that
takes a twine.

llvm-svn: 98118
 2010-03-10 01:29:27 +00:00
Chris Lattner
e284f80948 inline away a form of IsPCRelative, eliminating the 
dead IsPCRel argument.

llvm-svn: 98117
 2010-03-10 01:17:49 +00:00
Chris Lattner
cff79125fb add some fixme's for MCizing. EH still has a few things that 
need to be MCized, but the last debug info thing are LEB and
cygwin specific (which the MC api doesn't support yet) and
one specific form of EmitReference which I'll tackle next.

llvm-svn: 98116
 2010-03-10 01:04:13 +00:00
Daniel Dunbar
14b4e621b0 MC/Mach-O: Use the SECTDIFF relocation type for (A - B + constant) where A is external. 
- I'm not sure why, but this is what 'as' does.

llvm-svn: 98115
 2010-03-10 00:58:25 +00:00