1bb56dedf5
Properly link alias and function decls. This fixes PR2146
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llvm-svn: 53154
2008-07-05 23:03:21 +00:00
9f1a4dc672
Fix missed optimization opportunity when analyzing cast of mul and select.
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llvm-svn: 53151
2008-07-05 21:19:34 +00:00
5c755ff51b
Fixed generating incorrect aligned stores that I backout of r53031
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that fixed problems in EmitStackConvert where the source and target type
have different alignment by creating a stack slot with the max
alignment of source and target type.
llvm-svn: 53150
2008-07-05 20:40:31 +00:00
c9c3f49993
Several changes to Mips backend, experimental fp support being the most
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important.
- Cleanup in the Subtarget info with addition of new features, not all support
yet, but they allow the future inclusion of features easier. Among new features,
we have : Arch family info (mips1, mips2, ...), ABI info (o32, eabi), 64-bit
integer
and float registers, allegrex vector FPU (VFPU), single float only support.
- TargetMachine now detects allegrex core.
- Added allegrex (Mips32r2) sext_inreg instructions.
- *Added Float Point Instructions*, handling single float only, and
aliased accesses for 32-bit FPUs.
- Some cleanup in FP instruction formats and FP register classes.
- Calling conventions improved to support mips 32-bit EABI.
- Added Asm Printer support for fp cond codes.
- Added support for sret copy to a return register.
- EABI support added into LowerCALL and FORMAL_ARGS.
- MipsFunctionInfo now keeps a virtual register per function to track the
sret on function entry until function ret.
- MipsInstrInfo FP support into methods (isMoveInstr, isLoadFromStackSlot, ...),
FP cond codes mapping and initial FP Branch Analysis.
- Two new Mips SDNode to handle fp branch and compare instructions : FPBrcond,
FPCmp
- MipsTargetLowering : handling different FP classes, Allegrex support, sret
return copy, no homing location within EABI, non 32-bit stack objects
arguments, and asm constraint for float.
llvm-svn: 53146
2008-07-05 19:05:21 +00:00
93e180342a
Rather than having a different custom legalization
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hook for each way in which a result type can be
legalized (promotion, expansion, softening etc),
just use one: ReplaceNodeResults, which returns
a node with exactly the same result types as the
node passed to it, but presumably with a bunch of
custom code behind the scenes. No change if the
new LegalizeTypes infrastructure is not turned on.
llvm-svn: 53137
2008-07-04 11:47:58 +00:00
04fb6bf468
Linux also does not require exception handling
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moves in order to get correct debug info. Since
I can't imagine how any target could possibly
be any different, I've just stripped out the
option: now all the world's like Darwin!
llvm-svn: 53134
2008-07-04 09:55:48 +00:00
4bb9089db7
Don't return std::vector by value, but pass it in by reference to be filled.
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llvm-svn: 53123
2008-07-03 23:13:02 +00:00
2e50689435
Revert my previous check-in that split up MachineModuleInfo. It turns out to
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slow the compiler down at -O0 some 30% or more. Ooops.
llvm-svn: 53120
2008-07-03 22:53:42 +00:00
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
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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
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part of PR2509.
llvm-svn: 53038
2008-07-02 18:05:19 +00:00
739a0548c4
Add a new getMergeValues method that does not need
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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
Anton Korobeynikov