fad8be450d
Backed out 53031.
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llvm-svn: 53110
2008-07-03 18:20:14 +00:00
633e22b3ee
Back out 53091 for now.
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llvm-svn: 53109
2008-07-03 18:11:29 +00:00
3ea90a7d55
Use information already present in the ValueTable to fast-fail when we know there won't be a value number match. This speeds up GVN on a case where there are very few redundancies by ~25%.
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llvm-svn: 53108
2008-07-03 17:44:33 +00:00
eb611ddeb2
Do not try to update dominator info while manipulating CFG. This code does not handle all cases and keeps invalid dom info around some cases, which misleads other passes down stream.
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Right now, dom info is recaluclated in the end if the loop is switched.
llvm-svn: 53106
2008-07-03 17:37:52 +00:00
d57cdc3c60
Remove the ability for ADCE to remove unreachable blocks in loop nests, because, as Eli pointed out, SimplifyCFG already does this.
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llvm-svn: 53104
2008-07-03 17:21:41 +00:00
7d98a48f15
- Remove calls to copyKillDeadInfo which is an N^2 function. Instead, propagate kill / dead markers as new instructions are constructed in foldMemoryOperand, convertToThressAddress, etc.
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- Also remove LiveVariables::instructionChanged, etc. Replace all calls with cheaper calls which update VarInfo kill list.
llvm-svn: 53097
2008-07-03 09:09:37 +00:00
ba5d7efc6c
Add newline at the end of Constants.cpp.
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llvm-svn: 53092
2008-07-03 07:46:41 +00:00
4827deb74f
llvm-gcc sometimes marks external declarations hidden, because intializers are
...
processed separately. Honour such situation and emit PIC relocations properly
in such case.
llvm-svn: 53091
2008-07-03 07:43:14 +00:00
a96eabaab7
Remove unused function.
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llvm-svn: 53090
2008-07-03 07:10:03 +00:00
f94b9826b5
Preserve dom info.
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llvm-svn: 53089
2008-07-03 07:04:22 +00:00
874a3a0b0d
Keep track of inherited analysis (e.g. dominator tree).
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llvm-svn: 53088
2008-07-03 07:02:30 +00:00
226edd1826
Remove extra FIXME
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llvm-svn: 53087
2008-07-03 06:50:04 +00:00
c4dcf82a16
Reconstruct dom info, if loop is unswitched.
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llvm-svn: 53086
2008-07-03 06:48:21 +00:00
e491bb8845
LoopUnswitch does not preserve dominator info in all cases.
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llvm-svn: 53085
2008-07-03 05:55:03 +00:00
b261292917
Reapply r52988, "Simplify addRegisterKilled and addRegisterDead." The
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254.gap failure was not due to this mod.
llvm-svn: 53068
2008-07-03 01:18:51 +00:00
7722f791f6
Use operator new instead of new char[].
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llvm-svn: 53066
2008-07-03 00:53:09 +00:00
f3c4d7f877
Avoid unnecessarily copying APInt objects.
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llvm-svn: 53065
2008-07-03 00:52:03 +00:00
4c6db53a36
Correct a comment.
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llvm-svn: 53064
2008-07-03 00:51:05 +00:00
9f8b66f3f1
Use std::replace instead of std::find and push_back.
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llvm-svn: 53063
2008-07-03 00:28:27 +00:00
7dcfff392a
Undo previous patch. It is not that simple to fix dom info here.
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llvm-svn: 53062
2008-07-03 00:08:13 +00:00
7a265d83bf
- Add LiveVariables::replaceKillInstruction. This does a subset of instructionChanged. That is, it only update the VarInfo.kills if the new instruction is known to have the correct dead and kill markers.
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- CommuteInstruction copies kill / dead markers over to new instruction. So use replaceKillInstruction instead.
llvm-svn: 53061
2008-07-03 00:07:19 +00:00
c939f45fe7
commuteInstruction should preserve dead markers.
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llvm-svn: 53060
2008-07-03 00:04:51 +00:00
30cc028e4a
Make LiveVariables even more optional, by making it optional in the call to TargetInstrInfo::convertToThreeAddressInstruction
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Also, if LV isn't around, then TwoAddr doesn't need to be updating flags, since they won't have been set in the first place.
llvm-svn: 53058
2008-07-02 23:41:07 +00:00
22e9707480
Replace a few uses of SelectionDAG::getTargetNode with
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SelectionDAG::SelectNodeTo in the instruction selector. This
updates existing nodes in place instead of creating new ones.
Go back to selecting ISD::DBG_LABEL nodes into
TargetInstrInfo::DBG_LABEL nodes instead of leaving them
unselected, now that SelectNodeTo allows us to update them
in place.
llvm-svn: 53057
2008-07-02 23:23:19 +00:00
5adfcb5783
Preserve dom info while simplifing loop after the unswitch.
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llvm-svn: 53052
2008-07-02 22:58:54 +00:00
1b46bfecfe
Revert r52988. It broke 254.gap on x86-64.
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llvm-svn: 53050
2008-07-02 22:12:55 +00:00
8c10c2482a
TwoAddressInstructionPass doesn't really require LiveVariables, it just needs to update it if it's already around.
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llvm-svn: 53049
2008-07-02 21:28:58 +00:00
488b89f608
Use df_ext_iterator to capture the reachable set without allocating an extra set.
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Also, move large sets and vectors out of instance variables and onto the stack,
and give them more reasonable sizes.
llvm-svn: 53044
2008-07-02 18:41:09 +00:00
6acc782dad
Avoid a redundant call.
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llvm-svn: 53040
2008-07-02 18:15:31 +00:00
323b5755a6
Add support to ADCE for pruning unreachable blocks. This addresses the final
...
part of PR2509.
llvm-svn: 53038
2008-07-02 18:05:19 +00:00
739a0548c4
Add a new getMergeValues method that does not need
...
to be passed the list of value types, and use this
where appropriate. Inappropriate places are where
the value type list is already known and may be
long, in which case the existing method is more
efficient.
llvm-svn: 53035
2008-07-02 17:40:58 +00:00
9edcf24da9
Use DenseSet rather than SmallPtrSet for the alive set. Using SmallPtrSet
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with a huge "size" parameter is actually quite inefficient.
llvm-svn: 53034
2008-07-02 17:32:04 +00:00
b22a640fe4
A better fix for PR2503 that doesn't pessimize GVN in the presence of unreachable blocks.
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llvm-svn: 53032
2008-07-02 17:20:16 +00:00
4b7c1acf26
Fixed problem in EmitStackConvert where the source and target type
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have different alignment by creating a stack slot with the max
alignment of source and target type.
llvm-svn: 53031
2008-07-02 17:07:12 +00:00
6b2c4f6143
instead of aborting on shifts of i1, just implicitly fold them.
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The dag combiner can produce a shift of i1 when folding icmp i1's.
llvm-svn: 53030
2008-07-02 17:01:57 +00:00
d353c265ff
Fix typo compounded by a cut-and-pasto.
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llvm-svn: 53012
2008-07-02 10:03:53 +00:00
ed283c49d5
Let AnalyzeNewNode take care of calling ExpungeNode.
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This makes sure that all new nodes are expunged, not
just those the top node of a new subtree.
llvm-svn: 53011
2008-07-02 09:56:41 +00:00
7e4abde27c
- Use a faster priority comparison function if -fast.
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- Code clean up.
llvm-svn: 53010
2008-07-02 09:23:51 +00:00
bedd1b2427
Add a new (simple) StringMap::clear method, patch by Pratik
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Solanki!
llvm-svn: 53008
2008-07-02 05:26:32 +00:00
ed50fb5b61
reuse vectors.
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llvm-svn: 53007
2008-07-02 01:44:29 +00:00
57d94d6304
Fix comment.
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llvm-svn: 53006
2008-07-02 01:31:19 +00:00
e149d4ed4d
Preserve loop data so that it is not fetched everytime it is needed.
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Keep track of currentLoop.
llvm-svn: 53005
2008-07-02 01:18:13 +00:00
536fb95321
Use the canonical form for getting an empty structure.
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llvm-svn: 53003
2008-07-02 00:50:02 +00:00
82a9321f56
Sorry. I couldn't sleep at night knowing I put these ugly casts into the source tree.
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llvm-svn: 53001
2008-07-02 00:35:47 +00:00
31936d6ab6
Add a version of AddString that takes a const char* so we can avoid extraneous
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conversions to std::string.
llvm-svn: 52995
2008-07-01 23:49:59 +00:00
b7bd02be57
Darwin doesn't need exception handling information for the "move" info when
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debug information is being output, because it's leet!
llvm-svn: 52994
2008-07-01 23:34:48 +00:00
c963f6c14b
Avoid creating expensive comment string if it's not going to be printed.
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llvm-svn: 52992
2008-07-01 23:18:29 +00:00
501f207bdf
No need to use std::distance. We can just count the number of operands
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much more cheaply.
llvm-svn: 52990
2008-07-01 22:34:11 +00:00
f3202a6375
Simplify addRegisterKilled and addRegisterDead.
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llvm-svn: 52988
2008-07-01 22:21:21 +00:00
c8cdb883df
- Update comments.
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- Don't use GlobalVariable::LinkageTypes when unsigned works.
llvm-svn: 52987
2008-07-01 22:08:01 +00:00
Evan Cheng