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8402 Commits

Author SHA1 Message Date
Devang Patel
f5a7a2c84a Remove DebugLabelFolder pass. It is not used by dwarf writer anymore. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89790 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-24 19:37:07 +00:00
Devang Patel
f3a0376a56 Swith to pubtypes section before emitting pub types. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89787 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-24 19:18:41 +00:00
Devang Patel
193f720f11 Emit pubtypes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89725 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-24 01:14:22 +00:00
David Goodwin
2601329106 <rdar://problem/6721894>. Allow multiple registers to be renamed together (super and sub) if necessary to break an anti-dependence. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89722 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-24 00:59:08 +00:00
Dan Gohman
735afe14ee Remove ISD::DEBUG_LOC and ISD::DBG_LABEL, which are no longer used. 
Note that "hasDotLocAndDotFile"-style debug info was already broken;
people wanting this functionality should implement it in the
AsmPrinter/DwarfWriter code.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89711 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-23 23:20:51 +00:00
Dan Gohman
277207e6cb Simplify this code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89702 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-23 21:30:55 +00:00
Dan Gohman
75ae593a27 Print the debug info line and column in MachineInstr::print even when there's 
no filename. This situation is apparently fairly common right now.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89701 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-23 21:29:08 +00:00
Devang Patel
05f6fa874e Revert r89487. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89686 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-23 18:43:37 +00:00
Dan Gohman
5fca8b1c8d Move CopyCatchInfo into FunctionLoweringInfo.cpp too, for consistency. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89683 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-23 18:12:11 +00:00
Dan Gohman
2048b85c7c Rename SelectionDAGLowering to SelectionDAGBuilder, and rename 
SelectionDAGBuild.cpp to SelectionDAGBuilder.cpp.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89681 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-23 18:04:58 +00:00
Dan Gohman
f9bd450a10 Move RegsForValue to an anonymous namespace, since it is only used 
in this file.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89675 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-23 17:46:23 +00:00
Dan Gohman
66336edf82 Move some more code out of SelectionDAGBuild.cpp and into 
FunctionLoweringInfo.cpp.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89674 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-23 17:42:46 +00:00
Ted Kremenek
9977ed0290 Update CMake file. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89671 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-23 17:26:04 +00:00
Dan Gohman
6277eb2bb9 Move the FunctionLoweringInfo class and some related utility functions out 
of SelectionDAGBuild.h/cpp into its own files, to help separate
general lowering logic from SelectionDAG-specific lowering logic.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89667 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-23 17:16:22 +00:00
Nick Lewycky
ce2c51b670 Pull LLVMContext out of PromoteMemToReg. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89645 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-23 03:50:44 +00:00
Jim Grosbach
a2f20b20a8 Add getFrameIndexReference() to TargetRegisterInfo, which allows targets to 
tell debug info which base register to use to reference a frame index on a
per-index basis. This is useful, for example, in the presence of dynamic
stack realignment when local variables are indexed via the stack pointer and
stack-based arguments via the frame pointer.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89620 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-22 20:14:00 +00:00
Jim Grosbach
7ab38dfccb 80-column cleanup 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89612 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-22 19:20:36 +00:00
Jakob Stoklund Olesen
e0239930eb Teach MachineBasicBlock::updateTerminator() to handle a failing TII->ReverseBranchCondition(Cond) call. 
This fixes the MallocBench/cfrac test case regression.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89608 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-22 18:28:04 +00:00
Jim Grosbach
31ef40e940 remove trailing whitespace 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89567 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-21 23:12:12 +00:00
Evan Cheng
e54cb16308 Allow target to disable if-converting predicable instructions. e.g. NEON instructions under ARM mode. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89541 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-21 06:20:26 +00:00
Devang Patel
2c4ceb177b Cosmetic changes, which were long overdue, in DwarfDebug.cpp. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89537 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-21 02:48:08 +00:00
Devang Patel
bef8888a91 We are not using DBG_STOPPOINT anymore. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89536 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-21 02:46:55 +00:00
Jakob Stoklund Olesen
323d8c3ed7 Be more clever about calculating live variables through new basic blocks. 
When splitting a critical edge, the registers live through the edge are:

- Used in a PHI instruction, or
- Live out from the predecessor, and
- Live in to the successor.

This allows the coalescer to eliminate even more phi joins.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89530 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-21 02:05:21 +00:00
Devang Patel
9bff5cbae8 Remove dead code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89522 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-21 00:54:03 +00:00
Dale Johannesen
5b8bce11d6 When generating a vector the really slow way, via loads 
and stores, handle the case where the element size is not
a valid target type correctly (PPC).



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89521 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-21 00:53:23 +00:00
Devang Patel
6f01d9c2f0 There is no need to use FoldingSet to unique DIEs. 
DIEs are created from MDNode, which are already uniqued. And DwarfDebug already uses ValueMaps to find and use existing DIE for a given MDNode.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89518 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-21 00:31:03 +00:00
David Goodwin
00621efb40 Restructure code to allow renaming of multiple-register groups for anti-dep breaking. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89511 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-20 23:33:54 +00:00
Evan Cheng
c26abd9487 Enable hoisting load from constant memories. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89510 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-20 23:31:34 +00:00
Dan Gohman
29cbade25a Target-independent support for TargetFlags on BlockAddress operands, 
and support for blockaddresses in x86-32 PIC mode.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89506 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-20 23:18:13 +00:00
Devang Patel
017d121c59 Do not hold on to a map slot while new entries may be inserted into the map. 
Use ValueMap, instead of std::map.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89490 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-20 21:37:22 +00:00
David Greene
a96fc2f3ad Cleanups. 
Make things a little more efficient as suggested by Evan.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89489 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-20 21:13:27 +00:00
Devang Patel
1f37b5b3af There is no need to emit source location info for DW_TAG_pointer_type. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89487 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-20 21:05:37 +00:00
Evan Cheng
87b75ba75e Add option -licm-const-load to hoist all loads from constant memory. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89477 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-20 19:55:37 +00:00
David Goodwin
557bbe6b5d Remove some old experimental code that is no longer needed. Remove additional, speculative scheduling pass as its cost did not translate into significant performance improvement. Minor tweaks. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89471 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-20 19:32:48 +00:00
Jakob Stoklund Olesen
6cd8103bea More consistent labelling of basic blocks in debug output 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89470 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-20 18:54:59 +00:00
Duncan Sands
c088ae8b84 Fix PR5558, which was caused by a wrong fix for PR3393 (see commit 63048), 
which was an expensive checks failure due to a bug in the checking.  This
patch in essence reverts the original fix for PR3393, and refixes it by a
tweak to the way expensive checking is done.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89454 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-20 10:45:10 +00:00
Dan Gohman
b4afb137ef Fix fast-isel to avoid selecting the return instruction if a 
tail call has been encountered.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89444 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-20 02:51:26 +00:00
Dan Gohman
2e7e94826a Add an experimental option to run gep-splitting and no-load GVN 
just before codegen.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89439 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-20 02:03:44 +00:00
Jakob Stoklund Olesen
324da7647c Add MachineBasicBlock::getName, and use it in place of getBasicBlock()->getName. 
Fix debug code that assumes getBasicBlock never returns NULL.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89428 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-20 01:17:03 +00:00
Lang Hames
8783e401a3 Removed references to LiveStacks from Spiller.* . They're no longer needed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89422 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-20 00:53:30 +00:00
David Goodwin
3e72d301e0 Fix a couple of problems with maintaining liveness information for antidep breaking. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89404 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-19 23:12:37 +00:00
Jakob Stoklund Olesen
160069d15a Place new basic blocks immediately after their predecessor when splitting 
critical edges in PHIElimination.

This has a huge impact on regalloc performance, and we recover almost all of
the 10% compile time regression that edge splitting introduced.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89381 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-19 19:42:16 +00:00
Bill Wendling
fb7634f1c7 Reverting the EH table patches. 
$ svn merge -c -89279 https://llvm.org/svn/llvm-project/llvm/trunk
--- Reverse-merging r89279 into '.':
U    lib/CodeGen/AsmPrinter/DwarfException.cpp
U    lib/Target/TargetLoweringObjectFile.cpp
$ svn merge -c -89270 https://llvm.org/svn/llvm-project/llvm/trunk
--- Reverse-merging r89270 into '.':
G    lib/CodeGen/AsmPrinter/DwarfException.cpp
G    lib/Target/TargetLoweringObjectFile.cpp



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89379 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-19 19:21:09 +00:00
David Greene
feb5bfbc6b Fix a small bug. 
Fix one case we missed to make sure we reserve registers from
allocation.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89376 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-19 19:09:39 +00:00
David Greene
7cfd336af6 Add support for spreading register allocation. 
Add a -linearscan-skip-count argument (default to 0) that tells the
allocator to remember the last N registers it allocated and skip them
when looking for a register candidate.  This tends to spread out
register usage and free up post-allocation scheduling at the cost of
slightly more register pressure.  The primary benefit is the ability
to backschedule reloads.

This is turned off by default.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89356 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-19 15:55:49 +00:00
Lang Hames
835ca07991 Added a new Spiller implementation which wraps LiveIntervals::addIntervalsForSpills. 
All spiller calls in RegAllocLinearScan now go through the new Spiller interface.
The "-new-spill-framework" command line option has been removed. To use the trivial in-place spiller you should now pass "-spiller=trivial -rewriter=trivial".
(Note the trivial spiller/rewriter are only meant to serve as examples of the new in-place modification work. Enabling them will yield terrible, though hopefully functional, code).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89311 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-19 04:15:33 +00:00
Bill Wendling
01c69374b5 The "ReadOnlyWithRel" enum seems to apply more to what Darwin does with the EH 
exception table than DataRel.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89279 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-19 00:09:14 +00:00
Bob Wilson
fbb6b67df0 There should be no need to keep renumbering blocks during tail duplication. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89275 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-18 23:48:57 +00:00
Bill Wendling
ec04458551 Attempt #2: 
Place the EH table in the __TEXT section on MachO. It saves space.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89270 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-18 23:18:46 +00:00
Bob Wilson
60f34b9fb0 Tail duplication still needs to iterate. Duplicating new instructions onto 
the tail of a block may make that block a new candidate for duplication.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89264 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-18 22:52:37 +00:00
Bob Wilson
79d621035e Add another statistic to measure code size due to tail duplication. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89254 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-18 22:12:31 +00:00
Jakob Stoklund Olesen
0b25ae1afb Fix PR5300. 
When TwoAddressInstructionPass deletes a dead instruction, make sure that all
register kills are accounted for. The 2-addr register does not get special
treatment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89246 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-18 21:33:35 +00:00
Jakob Stoklund Olesen
8f16e02fc9 Allow the machine verifier to be run outside the PassManager. 
Verify LiveVariables information when present.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89241 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-18 20:36:57 +00:00
Jakob Stoklund Olesen
1e78aa445c Remove the -early-coalescing option 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89240 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-18 20:36:47 +00:00
Lang Hames
38283e23df Fixed the in-place spiller and trivial rewriter, which had been broken by the recent SlotIndexes work. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89238 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-18 20:31:20 +00:00
Bob Wilson
7cd5d3e05c Add statistics for tail duplication. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89225 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-18 19:29:37 +00:00
Jakob Stoklund Olesen
0257dd375d Don't require LiveVariables for PHIElimination. Enable critical edge splitting 
when LiveVariables is available.

The -split-phi-edges is now gone, and so is the hack to disable it when using
the local register allocator. The PHIElimination pass no longer has
LiveVariables as a prerequisite - that is what broke the local allocator.
Instead we do critical edge splitting when possible - that is when
LiveVariables is available.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89213 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-18 18:01:35 +00:00
Bob Wilson
834b08af8d Add a target hook to allow changing the tail duplication limit based on the 
contents of the block to be duplicated.  Use this for ARM Cortex A8/9 to
be more aggressive tail duplicating indirect branches, since it makes it
much more likely that they will be predicted in the branch target buffer.
Testcase coming soon.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89187 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-18 03:34:27 +00:00
Jakob Stoklund Olesen
5052c1547e Fix inverted test and add testcase from failing self-host. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89167 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-18 00:02:18 +00:00
Jakob Stoklund Olesen
202344e124 Disable -split-phi-edges to unbreak the buildbots 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89142 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-17 21:23:49 +00:00
Jakob Stoklund Olesen
5493acac6f Never call UpdateTerminator() when AnalyzeBranch would fail. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89139 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-17 20:46:00 +00:00
Evan Cheng
2a085c3493 Add a WriteAsOperand for MachineBasicBlock so MachineLoopInfo dump looks sane. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89130 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-17 19:19:59 +00:00
Evan Cheng
7adcdc313f Fix comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89129 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-17 19:19:01 +00:00
Jakob Stoklund Olesen
95a2c8f1d0 Enable -split-phi-edges by default, except when -regalloc=local. 
The local register allocator doesn't like it when LiveVariables is run.
We should also disable edge splitting under -O0, but that has to wait a bit.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89125 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-17 19:15:50 +00:00
Bob Wilson
aa60ddac39 Remove a special case for tail merging that seems to be both broken and 
unnecessary.  It is broken because the "isIdenticalTo" check should be
negated.  If that is fixed, this code causes the CodeGen/X86/tail-opts.ll
test to fail, in the dont_merge_oddly function.  And, I confirmed that the
regression is real -- the generated code is worse.  As far as I can tell,
that tail-opts.ll test is checking for what this code is supposed to handle
and we're doing the right thing anyway.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89121 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-17 18:30:09 +00:00
Dan Gohman
37d60fd142 Set MadeChange instead of MadeChangeThisIteration. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89114 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-17 18:04:15 +00:00
Bob Wilson
465c8252f2 Update a comment, now that tail duplication happens after other branch 
folding optimizations.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89109 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-17 17:40:31 +00:00
Bob Wilson
56ea69c3a2 Perform tail duplication only once, after tail merging is complete. 
It was too difficult to keep the heuristics for merging and duplication
consistent.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89105 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-17 17:06:18 +00:00
Evan Cheng
9e97f3c2e2 Revert 89021. It's miscompiling llvm-gcc driver driver at -O0. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89082 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-17 09:55:52 +00:00
Nick Lewycky
381afae68f Remove VISIBILITY_HIDDEN from the classes in this directory. Fixes bug 5507. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89075 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-17 09:17:08 +00:00
Nick Lewycky
5f9843f68f Revert r88939. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89066 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-17 08:11:44 +00:00
Bill Wendling
7378b1bd00 Refactor the code that creates the "dot-label" difference. This may be used in 
more than one place. No intended functionality change.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89024 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-17 01:23:53 +00:00
Jakob Stoklund Olesen
2cbe71cdf0 Enable -split-phi-edges by default 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89021 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-17 01:07:22 +00:00
Dan Gohman
e0f06c78d3 Remove the optimizations that convert BRCOND and BR_CC into 
unconditional branches or fallthroghes. Instcombine/SimplifyCFG
should be simplifying branches with known conditions.

This fixes some problems caused by these transformations not
updating the MachineBasicBlock CFG.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89017 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-17 00:47:23 +00:00
Dan Gohman
834651c945 Initialize the new AsmPrinterFlags field to 0, fixing uses of 
uninitialized memory.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88985 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-16 22:49:38 +00:00
Devang Patel
f76a3d634f Revert r88939. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88973 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-16 21:53:40 +00:00
Dan Gohman
6ac0e76ff4 Sink a #include <map> to where it's actually needed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88956 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-16 20:40:47 +00:00
Dan Gohman
552c0dff34 Fix a typo in a comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88953 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-16 20:35:59 +00:00
Bob Wilson
4a504c6ff8 Fix a comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88940 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-16 19:33:27 +00:00
Devang Patel
270a97430d Add VISIBILITY_HIDDEN marker. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88939 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-16 19:20:48 +00:00
Bob Wilson
c4a0c843e4 Fix some comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88932 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-16 18:54:08 +00:00
Bob Wilson
d34f5d91bc Whitespace: be consistent with pointer syntax. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88929 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-16 18:08:46 +00:00
Bob Wilson
3cbc312087 Clean up whitespace. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88927 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-16 17:56:13 +00:00
David Greene
ddff941357 Support spill comments. 
Have the asm printer emit a comment if an instruction is a spill or
reload and have the spiller mark copies it introdues so the asm printer
can also annotate those.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88911 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-16 15:12:23 +00:00
Evan Cheng
39aa7251a2 Check if subreg index is zero. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88899 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-16 06:31:49 +00:00
Evan Cheng
285a7d57dc For some targets, a copy can use a register multiple times, e.g. ppc. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88895 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-16 05:52:06 +00:00
Lang Hames
79ac32de3b Fixes the bug exposed by Anton's test case in PR 5495: 
Make sure when ProcessImplicitDefs removes a copy which kills its source reg that it
removes the copy from said reg's Kills list.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88881 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-16 02:07:31 +00:00
Lang Hames
b126d0530d Fix for the original bug in PR5495 - Look at uses as well as defs when determining the PHI-copy insert point. 
- Patch by Andrew Canis!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88880 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-16 02:00:09 +00:00
Lang Hames
e98b4b0695 Added an assert to the PBQP allocator to catch infinite cost solutions which might otherwise lead to miscompilations. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88829 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-15 04:39:51 +00:00
Jim Grosbach
c04cae9c9b Do not merge jump tables this early. Branch folding will do any necessary 
merges, and until then, it's useful to keep the tables separate for ease
of manipulation.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88806 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-14 20:15:03 +00:00
Jim Grosbach
68bb60f6a4 Add function to replace a destination MBB in a single jump table 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88804 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-14 20:09:13 +00:00
Sanjiv Gupta
9a501cf19d revert 88761 as it fails builds. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88762 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-14 07:22:25 +00:00
Sanjiv Gupta
6fb01a7750 Fix debug info crashes for PIC16. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88761 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-14 06:19:49 +00:00
Evan Cheng
fae3e92345 Added getSubRegIndex(A,B) that returns subreg index of A to B. Use it to replace broken code in VirtRegRewriter. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88753 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-14 03:42:17 +00:00
Evan Cheng
d57cdd5683 - Change TargetInstrInfo::reMaterialize to pass in TargetRegisterInfo. 
- If destination is a physical register and it has a subreg index, use the
  sub-register instead.
This fixes PR5423.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88745 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-14 02:55:43 +00:00
Evan Cheng
8fdd84cfa7 Fix PR5412: Fix an inverted check and another missing sub-register check. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88738 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-14 02:09:09 +00:00
Dan Gohman
ed9bab3b4d Enable the tail call optimization when the caller returns undef. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88737 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-14 02:06:30 +00:00
Jakob Stoklund Olesen
3b6ced1510 Fix bug in -split-phi-edges. 
When splitting an edge after a machine basic block with fall-through, we
forgot to insert a jump instruction. Fix this by calling updateTerminator() on
the fall-through block when relevant.

Also be more precise in PHIElimination::isLiveIn.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88728 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-14 00:38:13 +00:00
Jakob Stoklund Olesen
9aebb61daf Update MachineDominator information 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88727 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-14 00:38:06 +00:00
Lang Hames
b3661585c0 Added an API to the SlotIndexes pass to allow new instructions to be inserted into the numbering. 
PreAllocSplitting is now using this API to insert code.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88725 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-14 00:02:51 +00:00