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19216 Commits

Author SHA1 Message Date
Devang Patel
8292a2ee90 Do not filter loop if candidate branch is in loop header. 
llvm-svn: 37792
 2007-06-29 01:39:53 +00:00
Evan Cheng
13b846b1ad Prevent PPC::BCC first operand, the PRED number, from being isel'd into a LI instruction. 
llvm-svn: 37790
 2007-06-29 01:25:06 +00:00
Owen Anderson
cff6ffe45c Add support for value numbering (but not actually optimizing) cast instructions. 
llvm-svn: 37789
 2007-06-29 00:51:03 +00:00
Owen Anderson
f134e54bb1 Add a type field to expressions in preparation for performing GVNPRE on casts. 
llvm-svn: 37788
 2007-06-29 00:40:05 +00:00
Evan Cheng
992f296a71 No vector fneg. 
llvm-svn: 37786
 2007-06-29 00:18:15 +00:00
Dan Gohman
ad9cbaba40 Fix an assertion failure in legalizing bitcast operators on targets where 
vectors are split down to single elements as part of legalization.

llvm-svn: 37785
 2007-06-29 00:09:08 +00:00
Evan Cheng
e233ec5e46 Type of vector extract / insert index operand should be iPTR. 
llvm-svn: 37784
 2007-06-29 00:01:20 +00:00
Owen Anderson
f1665858f3 Add support for performing GVNPRE on select instructions. This fixes test/Transforms/GVNPRE/select.ll. 
llvm-svn: 37783
 2007-06-28 23:51:21 +00:00
Dan Gohman
c6bdcfa8c0 Add new TargetLowering code to provide the final register type that an 
illegal value type will be transformed to, for code that needs the
register type after all transformations instead of just after the first
transformation.

Factor out the code that uses this information to do copy-from-regs and
copy-to-regs for various purposes into separate functions so that they
are done consistently.

llvm-svn: 37781
 2007-06-28 23:29:44 +00:00
Lauro Ramos Venancio
04172124dd Fix a bug in my previous patch. 
llvm-svn: 37778
 2007-06-28 20:06:38 +00:00
Lauro Ramos Venancio
eb29d717b3 When linking two modules, we should copy the alias. 
llvm-svn: 37776
 2007-06-28 19:02:54 +00:00
Devang Patel
03d844eebd - Undo previous check and allow loop switch for condtion that is not inside 
loop.
- Avoid loop unswich for loop header branch.
- While cloning dominators fix typo and handle self dominating blocks.

llvm-svn: 37772
 2007-06-28 02:05:46 +00:00
Devang Patel
7f468af921 Update LoopUnswitch pass to preserve DomiantorTree. 
llvm-svn: 37771
 2007-06-28 00:49:00 +00:00
Devang Patel
50d5420cdc If a condition is not inside a loop then the condition is suitable 
to loop unswitch candidate for the loop.

llvm-svn: 37770
 2007-06-28 00:44:10 +00:00
Owen Anderson
9372f36b3c Make many sets a much more reasonable size. This decreases the time to optimize 
Anton's testcase from 35.5s to 34.7s.

llvm-svn: 37769
 2007-06-28 00:34:34 +00:00
Bill Wendling
cc1f4cafa2 Set implied features based upon the CPU's feature list. 
llvm-svn: 37768
 2007-06-27 23:34:06 +00:00
Devang Patel
28d2851f39 Remove ETForest. 
llvm-svn: 37765
 2007-06-27 20:53:52 +00:00
Evan Cheng
e67385d712 If a livein is not used in the block. It's live through. 
llvm-svn: 37764
 2007-06-27 18:47:28 +00:00
Evan Cheng
26542e347a Partial fix for PR1502: If a EH register is needed in a successor of landing pad, add it as livein to all the blocks in the paths between the landing pad and the specified block. 
llvm-svn: 37763
 2007-06-27 18:45:32 +00:00
Owen Anderson
97dd99d761 Use cached information that has already been computed to make clean() simpler and faster. This is a small speedup on most cases. 
llvm-svn: 37761
 2007-06-27 17:38:29 +00:00
Owen Anderson
a7927caa56 Fold a lot of code into two cases: binary instructions and ternary instructions. 
This saves many lines of code duplication.  No functionality change.

llvm-svn: 37759
 2007-06-27 17:03:03 +00:00
Dan Gohman
cb89e19a6d Rename ("shrinkify") MVT::isExtendedValueType to MVT::isExtendedVT. 
llvm-svn: 37758
 2007-06-27 16:08:04 +00:00
Dan Gohman
ce1bca0bf9 Remove a redundant newline in the asm output for ELF .rodata sections. 
llvm-svn: 37756
 2007-06-27 15:09:47 +00:00
Dan Gohman
c1c4b0972f Use getVectorTypeBreakdown in FunctionLoweringInfo::CreateRegForValue 
to compute the number and type of registers needed for vector values
instead of computing it manually. This fixes PR1529.

llvm-svn: 37755
 2007-06-27 14:34:07 +00:00
Dan Gohman
69a6154359 Make the comment for ScalarizeVectorOp mention that it is only for use 
with single-element vectors.

llvm-svn: 37752
 2007-06-27 14:06:22 +00:00
Zhou Sheng
011fc80616 Fix a bug. 
llvm-svn: 37751
 2007-06-27 09:50:26 +00:00
Duraid Madina
d32d8b9726 ok, this is something of a dirty hack, but it seems to work. (fixes e.g. 
the SPASS miscompilation)

llvm-svn: 37750
 2007-06-27 09:01:14 +00:00
Duraid Madina
73b0d188c8 ok, this much doesn't seem to bork anything 
llvm-svn: 37749
 2007-06-27 08:31:07 +00:00
Duraid Madina
94cd67290b revert evan's fixes (and my doofusness) since they had a huge code 
quality hit. will look at this soon.

llvm-svn: 37748
 2007-06-27 08:11:59 +00:00
Duraid Madina
c0d3c96333 pull evan's fixes - should help the nightly tester (but there are still 
some issues)

llvm-svn: 37747
 2007-06-27 07:07:13 +00:00
Evan Cheng
480cd89fa1 Replace std::set with SmallPtrSet. 
llvm-svn: 37746
 2007-06-27 05:23:00 +00:00
Owen Anderson
97de56ae2b Add support for performing GVNPRE on the three vector-specific operations. 
llvm-svn: 37745
 2007-06-27 04:10:46 +00:00
Evan Cheng
f74e333161 Fix an obvious bug. Old code only worked for the entry block. 
llvm-svn: 37743
 2007-06-27 01:16:36 +00:00
Owen Anderson
dc1d567274 1. Correct some comments and clean up some dead code. 
2. When calculating ANTIC_IN, only iterate the changed blocks.  For most average
inputs this is a small speedup, but for cases with unusual CFGs, this can be a significant win.

llvm-svn: 37742
 2007-06-26 23:29:41 +00:00
Evan Cheng
5c0f03bce4 Correctly handle implcit def / use operands. 
llvm-svn: 37740
 2007-06-26 21:05:13 +00:00
Evan Cheng
0eaa723739 Properly handle kills of a physical register which has sub-registers that are read by later instructions. 
llvm-svn: 37739
 2007-06-26 21:03:35 +00:00
Evan Cheng
5506831e5b Silence a warning. 
llvm-svn: 37737
 2007-06-26 18:31:22 +00:00
Dan Gohman
94432fe813 Use utostr from StringExtras.h instead of ostringstream from <sstream>. 
llvm-svn: 37731
 2007-06-26 15:14:48 +00:00
Dan Gohman
9cbc3fb1ab Revert the earlier change that removed the M_REMATERIALIZABLE machine 
instruction flag, and use the flag along with a virtual member function
hook for targets to override if there are instructions that are only
trivially rematerializable with specific operands (i.e. constant pool
loads).

llvm-svn: 37728
 2007-06-26 00:48:07 +00:00
Duraid Madina
c4b17f9a08 tidy this file up a bit 
llvm-svn: 37725
 2007-06-26 00:21:58 +00:00
Duraid Madina
1d8c70bf83 A bunch of fixes to the BigBlock allocator improve compile-time by ~20% 
and code quality by ~2% on my tests.

A big thank you to Roman Levenstein for this patch! See
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20070618/050717.html
for more details.

llvm-svn: 37724
 2007-06-25 23:46:54 +00:00
Chris Lattner
64e8e4af59 fix Transforms/Inline/2007-06-25-WeakInline.ll by not inlining functions 
with weak linkage.

llvm-svn: 37723
 2007-06-25 21:50:09 +00:00
Owen Anderson
fb09af59e0 Use the built-in postorder iterators rather than computing a postorder walk by hand. 
llvm-svn: 37721
 2007-06-25 18:25:31 +00:00
Dan Gohman
354f02e03d Generalize MVT::ValueType and associated functions to be able to represent 
extended vector types. Remove the special SDNode opcodes used for pre-legalize
vector operations, and the special MVT::Vector type used with them. Adjust
lowering and legalize to work with the normal SDNode kinds instead, and to
use the normal MVT functions to work with vector types instead of using the
two special operands that the pre-legalize nodes held.

This allows pre-legalize and post-legalize DAGs, and the code that operates
on them, to be more consistent. Pre-legalize vector operators can be handled
more consistently with scalar operators. And, -view-dag-combine1-dags and
-view-legalize-dags now look prettier for vector code.

llvm-svn: 37719
 2007-06-25 16:23:39 +00:00
Dan Gohman
dc8a1730f7 Make minor adjustments to whitespace and comments to reduce differences 
between SSE1 instructions and their respective SSE2 analogues.

llvm-svn: 37718
 2007-06-25 15:44:19 +00:00
Dan Gohman
f40db01c32 Fix loadv2i32 to be loadv4i32, though it isn't actually used anywhere yet. 
llvm-svn: 37717
 2007-06-25 15:19:03 +00:00
Dan Gohman
d3b3703430 Say AT&T instead of Intel in the comments for AT&T support. 
llvm-svn: 37716
 2007-06-25 15:11:25 +00:00
Anton Korobeynikov
c8aa8f8ba7 Provide hook for alloca on VCPP. Patch by Scott Graham 
llvm-svn: 37715
 2007-06-25 07:12:14 +00:00
Owen Anderson
293173ccd2 1) Fix an issue with non-deterministic iteration order in phi_translate 
2) Remove some maximal-set computing code that is no longer used.
3) Use a post-order CFG traversal to compute ANTIC_IN instead of a postdom traversal.
This causes the ANTIC_IN calculation to converge much faster.  Thanks to Daniel Berlin for suggesting this.

With this patch, the time to optimize 403.gcc decreased from 17.5s to 7.5s, and Anton's huge
testcase decreased from 62 minutes to 38 seconds.

llvm-svn: 37714
 2007-06-25 05:41:12 +00:00
Nick Lewycky
59c02f6336 Fix value ranges. 
llvm-svn: 37713
 2007-06-24 20:14:22 +00:00