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a24986d8bf
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12129 Commits

Author SHA1 Message Date
Jakob Stoklund Olesen
a24986d8bf Replace a big gob of old coalescer logic with the new CoalescerPair class. 
CoalescerPair can determine if a copy can be coalesced, and which register gets
merged away. The old logic in SimpleRegisterCoalescing had evolved into
something a bit too convoluted.

This second attempt fixes some crashes that only occurred Linux.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106769 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 18:15:01 +00:00
Bob Wilson
f0e1b89421 Edit and clarify comments for TargetInstrInfo methods: 
None of the existing implementations of commuteInstruction create new
instructions unless the NewMI parameter is true, but the comment had
implied otherwise.

findCommutedOpIndices returns false, not true, when it doesn't know
how to commute the instruction.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106761 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 16:48:26 +00:00
Dan Gohman
27da66db3e Add a comment about a thread safety issue in Statistic.h. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106756 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 16:31:32 +00:00
Dan Gohman
60e6f3d412 Add overloads for getFile and getFileOrSTDIN which take a const char * 
instead of a StringRef, avoiding the need to copy the string in the
common case.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106754 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 16:25:50 +00:00
Jakob Stoklund Olesen
8df08017d8 Be more strict about subreg-to-subreg copies in CoalescerPair. 
Also keep track of the original DstREg before subregister adjustments.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106753 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 16:19:28 +00:00
Dan Gohman
4e39e9da0f Reapply r106634, now that the bug it exposed is fixed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106746 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 14:30:44 +00:00
Jakob Stoklund Olesen
b8ac3b035b Revert "Replace a big gob of old coalescer logic with the new CoalescerPair class." 
Whiny buildbots.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106710 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 00:52:22 +00:00
Devang Patel
e9916a302f Use ValueMap instead of DenseMap. 
The ValueMapper used by various cloning utility maps MDNodes also.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106706 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 00:33:28 +00:00
Jakob Stoklund Olesen
e9c59711d3 Replace a big gob of old coalescer logic with the new CoalescerPair class. 
CoalescerPair can determine if a copy can be coalesced, and which register gets
merged away. The old logic in SimpleRegisterCoalescing had evolved into
something a bit too convoluted.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106701 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-24 00:12:39 +00:00
Devang Patel
29d3dd8a64 Cosmetic change. 
Do not use "ValueMap" as a name for a local variable or an argument.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106698 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-23 23:55:51 +00:00
Gabor Greif
02680f946b minor enhancement to llvm::isFreeCall API: return CallInst; no functional change 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106686 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-23 21:51:12 +00:00
Daniel Dunbar
cbe762b5d1 Revert r106263, "Fold the ShrinkDemandedOps pass into the regular DAGCombiner pass,"... it was causing both 'file' (with clang) and 176.gcc (with llvm-gcc) to be miscompiled. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106634 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-23 17:09:26 +00:00
Jim Grosbach
9a526495e0 Some targets don't require the fencing MEMBARRIER instructions surrounding 
atomic intrinsics, either because the use locking instructions for the
atomics, or because they perform the locking directly. Add support in the
DAG combiner to fold away the fences.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106630 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-23 16:07:42 +00:00
Jim Grosbach
b9cd499dec remove trailing whitespace 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106628 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-23 15:49:18 +00:00
Dan Gohman
605c14fb11 Replace ScalarEvolution's private copy of getLoopPredecessor 
with LoopInfo's public copy.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106603 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-22 23:43:28 +00:00
Eric Christopher
654dee4875 Look for and use a different darwin crash reporter library. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106576 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-22 21:01:04 +00:00
Dan Gohman
853d3fb8d2 Move PHIElimination's SplitCriticalEdge for MachineBasicBlocks out 
into a utility routine, teach it how to update MachineLoopInfo, and
make use of it in MachineLICM to split critical edges on demand.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106555 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-22 17:25:57 +00:00
Dan Gohman
5cf27f81f4 Split out the code for finding a unique loop predecessor from 
getLoopPreheader into a separate function, for clients which don't
require a proper preheader.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106543 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-22 15:25:42 +00:00
Dan Gohman
30f30e4386 Add a comment explaining a non-obvious API. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106539 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-22 13:57:08 +00:00
Devang Patel
a762b09310 Use single interface, using twine, to get named metadata. 
getNamedMetadata().


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106518 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-22 01:19:38 +00:00
Evan Cheng
4d54e5b2dd Tail merging pass shall not break up IT blocks. rdar://8115404 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106517 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-22 01:18:16 +00:00
Eric Christopher
1f4a1493fb Remove isTwoAddress from llvm. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106470 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-21 20:35:09 +00:00
Dan Gohman
e407c1d158 Move several non-performance-critical member functinos out of line. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106444 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-21 18:46:45 +00:00
Chris Lattner
44781a0a79 make the Value constructor protected. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106427 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-21 16:46:37 +00:00
Dan Gohman
485c43fc47 Factor out duplicated code for reusing and inserting casts into 
a helper function.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106388 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-19 13:25:23 +00:00
Dan Gohman
db4971259c Teach regular and fast isel to set dead flags on unused implicit defs 
on calls and similar instructions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106353 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-18 23:28:01 +00:00
Evan Cheng
86050dc8cc Allow ARM if-converter to be run after post allocation scheduling. 
- This fixed a number of bugs in if-converter, tail merging, and post-allocation
  scheduler. If-converter now runs branch folding / tail merging first to
  maximize if-conversion opportunities.
- Also changed the t2IT instruction slightly. It now defines the ITSTATE
  register which is read by instructions in the IT block.
- Added Thumb2 specific hazard recognizer to ensure the scheduler doesn't
  change the instruction ordering in the IT block (since IT mask has been
  finalized). It also ensures no other instructions can be scheduled between
  instructions in the IT block.

This is not yet enabled.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106344 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-18 23:09:54 +00:00
Jim Grosbach
ef6eb9c7ab back-end libcall handling for ATOMIC_SWAP (__sync_lock_test_and_set) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106342 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-18 23:03:10 +00:00
Jim Grosbach
e03262fcfc Add Expand-to-libcall support for additional atomics. This covers the usual 
entries used by llvm-gcc. *_[U]MIN and such can be added later if needed.

This enables the front ends to simplify handling of the atomic intrinsics by
removing the target-specific decision about which targets can handle the
intrinsics.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106321 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-18 21:43:38 +00:00
Dan Gohman
3bf63768e5 Revert r106304 (105548 and friends), which are the SCEVComplexityCompare 
optimizations. There is still some nondeterminism remaining.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106306 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-18 19:54:20 +00:00
Dan Gohman
78db186d2d Reapply 105540, 105542, and 105548, and revert r105732. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106304 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-18 19:26:04 +00:00
Dan Gohman
5af58d885e Add explicit keywords. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106300 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-18 19:04:37 +00:00
Dan Gohman
a606d955de Start TargetRegisterClass indices at 0 instead of 1, so that 
MachineRegisterInfo doesn't have to confusingly allocate an extra
entry.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106296 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-18 18:13:55 +00:00
Jim Grosbach
2bff8abbf2 Grammar. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106292 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-18 17:40:42 +00:00
Dan Gohman
4593433015 Don't bother calling releaseMemory before destroying the DominatorTreeBase. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106287 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-18 16:09:11 +00:00
Dan Gohman
03c3dc7b68 Give NamedRegionTimer an Enabled flag, allowing all its clients to 
switch from this:

  if (TimePassesIsEnabled) {
    NamedRegionTimer T(Name, GroupName);
    do_something();
  } else {
    do_something(); // duplicate the code, this time without a timer!
  }

to this:

  {
    NamedRegionTimer T(Name, GroupName, TimePassesIsEnabled);
    do_something();
  }


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106285 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-18 15:56:31 +00:00
Dan Gohman
027657db7c Change UpdateNodeOperands' operand and return value from SDValue to 
SDNode *, since it doesn't care about the ResNo value.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106282 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-18 15:30:29 +00:00
Dan Gohman
07587a4500 Remove getIntegerSCEV; it's redundant with getConstant, and getConstant 
is more consistent with the ConstantInt API.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106281 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-18 14:33:50 +00:00
Dan Gohman
e368b460a2 Eliminate unnecessary uses of getZExtValue(). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106279 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-18 14:22:04 +00:00
Dan Gohman
7720cb3823 isValueValidForType can be a static member function. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106278 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-18 14:01:07 +00:00
Dan Gohman
8a7f7426ee Fold the ShrinkDemandedOps pass into the regular DAGCombiner pass, 
which is faster, simpler, and less surprising.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106263 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-18 01:05:21 +00:00
Stuart Hastings
3bf9125933 Add a DebugLoc parameter to TargetInstrInfo::InsertBranch(). This 
addresses a longstanding deficiency noted in many FIXMEs scattered
across all the targets.

This effectively moves the problem up one level, replacing eleven
FIXMEs in the targets with eight FIXMEs in CodeGen, plus one path
through FastISel where we actually supply a DebugLoc, fixing Radar
7421831.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106243 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-17 22:43:56 +00:00
Jason Molenda
f7a503e6bb Add the entire range of DW_OP_lit[0..31], DW_OP_reg[0..31], and 
DW_OP_breg[0..31] to Dwarf.h.

Add "DW_" prefix to the llvm::dwarf::*String methods which did not
already have them in Dwarf.cpp.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106197 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-17 01:23:24 +00:00
Douglas Gregor
41f98a295a Revert r106117, which was the result of me misreading the C++98/03 
specification.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106162 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-16 22:32:18 +00:00
Daniel Dunbar
843aa1f15b MC: Simplify MCAssembler::isSymbolLinkerVisible to only take an MCSymbol. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106142 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-16 20:04:29 +00:00
Daniel Dunbar
83b467178a MC: Lift SwitchSection() and Finish() into MCObjectStreamer. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106141 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-16 20:04:25 +00:00
Daniel Dunbar
8dc68ab931 MC: Factor out an MCObjectStreamer class, which will be shared by the concrete 
object file format writers.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106140 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-16 20:04:22 +00:00
Douglas Gregor
0964b4a3f5 Eliminate a redundant "typename" keyword 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106117 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-16 17:42:01 +00:00
Devang Patel
2f7d5291de Use separate named MDNode to hold each function's local variable info. 
This speeds up local variable handling in DwarfDebug.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106075 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-16 00:53:55 +00:00
Jakob Stoklund Olesen
8a3eab9b20 Remove the local register allocator. 
Please use the fast allocator instead.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106051 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-15 21:58:33 +00:00