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Author SHA1 Message Date
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
Jim Grosbach
aa8617389c Clear up the last (famous last words) frame index value reuse issues for Thumb1. 
llvm-svn: 98109
 2010-03-10 00:13:42 +00:00
Dale Johannesen
3800f76c1a Speculatively revert 98104; could be what's causing crashes 
llvm-svn: 98108
 2010-03-10 00:11:34 +00:00
Chris Lattner
915a362856 mcize uses of PrintRelDirective and eliminate it. 
llvm-svn: 98107
 2010-03-10 00:09:21 +00:00
Chris Lattner
84561d5f46 inline the bool form of PrintRelDirective away, leaving just the unsigned form. 
llvm-svn: 98106
 2010-03-09 23:54:52 +00:00
Chris Lattner
d5d96f76d0 eliminate EOL, adding all comments with the OutStreamer.AddComment 
method.  With this, comments should end up on the same lines as the .byte
directives (for example) and we now get no output with:

$ llc CodeGen/X86/2009-02-12-DebugInfoVLA.ll -o - -filetype=null -asm-verbose

woot.

llvm-svn: 98105
 2010-03-09 23:52:58 +00:00
Dale Johannesen
02f3bfbecc Ever more complicated DEBUG_VALUE fixes for branch folding. 
llvm-svn: 98104
 2010-03-09 23:52:37 +00:00
Dan Gohman
a722142044 Avoid analyzing instructions in blocks not reachable from the entry block. 
They are lots of trouble, and they don't matter. This fixes PR6559.

llvm-svn: 98103
 2010-03-09 23:46:50 +00:00
Chris Lattner
58829fcfe9 eliminate a bunch of \n's that are being printed to O. Next up is to kill 
off "EOL".

llvm-svn: 98102
 2010-03-09 23:38:23 +00:00
Chris Lattner
2ede66313d convert the non-"ispcrel" case of EmitReference to MC, 
significant debug info testcases are now all going through
MCStreamer, though they print a lot of extraneous newlines to "O".

llvm-svn: 98101
 2010-03-09 23:19:15 +00:00
Chris Lattner
13cbdb1549 make the NullStreamer set the section on a label when emitted so that isDefined() works. 
llvm-svn: 98100
 2010-03-09 23:12:18 +00:00
Jakob Stoklund Olesen
189a55cc16 Try to keep the cached inliner costs around for a bit longer for big functions. 
The Caller cost info would be reset everytime a callee was inlined. If the
caller has lots of calls and there is some mutual recursion going on, the
caller cost info could be calculated many times.

This patch reduces inliner runtime from 240s to 0.5s for a function with 20000
small function calls.

This is a more conservative version of r98089 that doesn't break the clang
test CodeGenCXX/temp-order.cpp. That test relies on rather extreme inlining
for constant folding.

llvm-svn: 98099
 2010-03-09 23:02:17 +00:00
Daniel Dunbar
0bc3059b94 MC/X86: Rename alternate spellings of ADD{8,16,32} and mark as "code gen only" so they don't get selected by the asm matcher. 
llvm-svn: 98098
 2010-03-09 22:50:46 +00:00
Daniel Dunbar
d92e9bc7c1 MC/X86: Rename alternate spellings of CMP{8,16,32} and mark as "code gen only" so they don't get selected by the asm matcher. 
llvm-svn: 98097
 2010-03-09 22:50:40 +00:00
Chandler Carruth
97de5f241b Continue propagating the GoogleTest flags until we can update our version to 
eliminate this problem. This will hopefully let us make progress on Linux
bootstrapping.

llvm-svn: 98095
 2010-03-09 22:45:10 +00:00
Jakob Stoklund Olesen
24bdfeee51 Revert r98089, it was breaking a clang test. 
llvm-svn: 98094
 2010-03-09 22:43:37 +00:00