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3826 Commits

Author SHA1 Message Date
Dan Gohman
d258e80583 Add a parameter to getCopyToParts and getCopyFromParts to specify whether 
endian swapping should be done, and update the code to use it. This fixes
some register ordering issues on big-endian systems, such as PowerPC,
introduced by the recent illegal by-val arguments changes.

llvm-svn: 37921
 2007-07-05 20:12:34 +00:00
Gabor Greif
e16561cd5d Here is the bulk of the sanitizing. 
Almost all occurrences of "bytecode" in the sources have been eliminated.

llvm-svn: 37913
 2007-07-05 17:07:56 +00:00
Duncan Sands
4836e3a6f8 Make sure only one copy of a filter is placed in the 
exception handling table if we encounter it multiple
times.  Filters could be folded harder than this, but
that would mean a lot more work for not much gain.

llvm-svn: 37908
 2007-07-05 15:15:01 +00:00
Evan Cheng
bb6ecf0067 Better assertion messages. 
llvm-svn: 37890
 2007-07-05 07:05:38 +00:00
Duncan Sands
fe80638417 Extend eh.selector to support both catches and filters. 
Drop the eh.filter intrinsic.

llvm-svn: 37875
 2007-07-04 20:52:51 +00:00
Dan Gohman
06563a8702 Fix several over-aggressive folds for undef nodes in dagcombine, to 
follow the rules for undef used in instcombine.

llvm-svn: 37851
 2007-07-03 14:03:57 +00:00
Dale Johannesen
a2b3c175db Fix for PR 1505 (and 1489). Rewrite X87 register 
model to include f32 variants.  Some factoring
improvments forthcoming.

llvm-svn: 37847
 2007-07-03 00:53:03 +00:00
Dan Gohman
533dd16a7f Replace ExpandScalarFormalArgs and ExpandScalarCallArgs with the newly 
refactored getCopyFromParts and getCopyToParts, which are more general.
This effectively adds support for lowering illegal by-val vector call
arguments.

llvm-svn: 37843
 2007-07-02 16:18:06 +00:00
Dan Gohman
9a70823375 Teach GetNegatedExpression to negate 0-B to B in UnsafeFPMath mode, and 
visitFSUB to fold 0-B to -B in UnsafeFPMath mode. Also change visitFNEG
to use isNegatibleForFree/GetNegatedExpression instead of doing a subset
of the same thing manually.

This fixes test/CodeGen/X86/negative-sin.ll.

llvm-svn: 37842
 2007-07-02 15:48:56 +00:00
Evan Cheng
fa68d069ad Only do FNEG xform when the vector type is a floating point type. 
llvm-svn: 37818
 2007-06-29 21:44:35 +00:00
David Greene
cf2a51e8db Remove unused variables. 
llvm-svn: 37816
 2007-06-29 21:42:03 +00:00
Evan Cheng
9458e6a551 Fix a vector FP constant CSE bug. 
llvm-svn: 37814
 2007-06-29 21:36:04 +00:00
David Greene
4c1e6f3804 Remove unnecessary attributions in comments. 
llvm-svn: 37799
 2007-06-29 03:42:23 +00:00
David Greene
9468bfd932 Fix reference to cached end iterator invalidated by an erase operation. 
Uncovered by _GLIBCXX_DEBUG.

llvm-svn: 37795
 2007-06-29 02:49:11 +00:00
David Greene
5b6f755575 Remove the "special tie breaker" because it resulted in inconsistent 
ordering and thus violated the strict weak ordering requirement of
priority_queue.  Uncovered by _GLIBCXX_DEBUG.

llvm-svn: 37794
 2007-06-29 02:48:09 +00:00
David Greene
451d1a6ecd Fix misue of iterator pointing to erased object. Uncovered by 
_GLIBCXX_DEBUG.

llvm-svn: 37793
 2007-06-29 02:45:24 +00:00
Dan Gohman
0de7694de6 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
Dan Gohman
7867793aff 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
Evan Cheng
df0c705d7d 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
77f541ddfd 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
Dan Gohman
3b62d7265d Rename ("shrinkify") MVT::isExtendedValueType to MVT::isExtendedVT. 
llvm-svn: 37758
 2007-06-27 16:08:04 +00:00
Dan Gohman
7139a48057 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
f4e86da3a6 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
Duraid Madina
95759c0e78 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
89183dcc14 ok, this much doesn't seem to bork anything 
llvm-svn: 37749
 2007-06-27 08:31:07 +00:00
Duraid Madina
a415dcaa2a 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
540d329542 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
e66f822ecc Replace std::set with SmallPtrSet. 
llvm-svn: 37746
 2007-06-27 05:23:00 +00:00
Evan Cheng
6cf1371456 Fix an obvious bug. Old code only worked for the entry block. 
llvm-svn: 37743
 2007-06-27 01:16:36 +00:00
Evan Cheng
4bf87f1f44 Correctly handle implcit def / use operands. 
llvm-svn: 37740
 2007-06-26 21:05:13 +00:00
Evan Cheng
d8417d9199 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
Duraid Madina
f4dc5b26e2 tidy this file up a bit 
llvm-svn: 37725
 2007-06-26 00:21:58 +00:00
Duraid Madina
77416383e8 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
Dan Gohman
a866514528 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
309d3d51b3 Move ComputeMaskedBits, MaskedValueIsZero, and ComputeNumSignBits from 
TargetLowering to SelectionDAG so that they have more convenient
access to the current DAG, in preparation for the ValueType routines
being changed from standalone functions to members of SelectionDAG for
the pre-legalize vector type changes.

llvm-svn: 37704
 2007-06-22 14:59:07 +00:00
Duraid Madina
81a752aa95 check in the BigBlock local register allocator 
llvm-svn: 37703
 2007-06-22 08:27:12 +00:00
Evan Cheng
e3c4419953 std::set is really really terrible. Switch to SmallPtrSet to reduce compile time. For Duraid's example. The overall isel time is reduced from 0.6255 sec to 0.1876 sec. 
llvm-svn: 37701
 2007-06-22 01:35:51 +00:00
Dan Gohman
8e8d34b220 Tidy up ValueType names in comments. 
llvm-svn: 37688
 2007-06-21 14:48:26 +00:00
Dan Gohman
04deef3a49 Rename TargetLowering::getNumElements and friends to 
TargetLowering::getNumRegisters and similar, to avoid confusion with
the actual number of elements for vector types.

llvm-svn: 37687
 2007-06-21 14:42:22 +00:00
Evan Cheng
aa5f5d960d Xforms: 
(add (select cc, 0, c), x) -> (select cc, x, (add, x, c))
(sub x, (select cc, 0, c)) -> (select cc, x, (sub, x, c))

llvm-svn: 37685
 2007-06-21 07:39:16 +00:00
Evan Cheng
a955c02c9b Avoid if-converting simple block that ends with unconditional branch or fallthrough unless it branches / falls to the 'false' block. Not profitable, may end up increasing code size. 
llvm-svn: 37660
 2007-06-19 21:45:13 +00:00
Dan Gohman
a7644dd9b9 Pass a SelectionDAG into SDNode::dump everywhere it's used, in prepration 
for needing the DAG node to print pre-legalize extended value types, and
to get better debug messages with target-specific nodes.

llvm-svn: 37656
 2007-06-19 14:13:56 +00:00
Chris Lattner
37228f6ce5 document and hide two options. 
llvm-svn: 37651
 2007-06-19 05:47:49 +00:00
Dan Gohman
9e82064924 Replace M_REMATERIALIZIBLE and the newly-added isOtherReMaterializableLoad 
with a general target hook to identify rematerializable instructions. Some
instructions are only rematerializable with specific operands, such as loads
from constant pools, while others are always rematerializable. This hook
allows both to be identified as being rematerializable with the same
mechanism.

llvm-svn: 37644
 2007-06-19 01:48:05 +00:00
Evan Cheng
a7ca624028 Replace TargetInstrInfo::CanBeDuplicated() with a M_NOT_DUPLICABLE bit. 
llvm-svn: 37643
 2007-06-19 01:26:51 +00:00
Chris Lattner
26be02febf add isVarArg to CCState 
llvm-svn: 37640
 2007-06-19 00:11:09 +00:00
Evan Cheng
0598b2d5eb Fix some fragile code wrt CFG edge updating. 
llvm-svn: 37634
 2007-06-18 22:44:57 +00:00
Evan Cheng
2afd702c20 Move CorrectExtraCFGEdges() from BranchFolding.cpp to a MachineBasicBlock method. 
llvm-svn: 37633
 2007-06-18 22:43:58 +00:00
Chris Lattner
e31adc8ab9 make ComputeTopDownOrdering significantly faster and use less stack space 
by making it non-recursive

llvm-svn: 37629
 2007-06-18 21:28:10 +00:00
Dan Gohman
8c7333266c Make chain dependencies blue, in addition to being dashed. 
llvm-svn: 37626
 2007-06-18 15:30:16 +00:00