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8307 Commits

Author SHA1 Message Date
Devang Patel
fb0ee43438 Ignore variable if scope info is not available. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86753 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-10 23:20:04 +00:00
Dale Johannesen
9a645cd9d4 Emit correct code when making a ConstantPool entry for a vector 
constant whose component type is not a legal type for the target.
(If the target ConstantPool cannot handle this type either, it has
an opportunity to merge elements.  In practice any target with
8-bit bytes must support i8 *as data*).  7320806 (partial).



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86751 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-10 23:16:41 +00:00
Devang Patel
53bb5c95af Implement support to debug inlined functions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86748 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-10 23:06:00 +00:00
Jakob Stoklund Olesen
f235f13931 Teach PHIElimination to split critical edges when -split-phi-edges is enabled. 
Critical edges leading to a PHI node are split when the PHI source variable is
live out from the predecessor block. This help the coalescer eliminate more
PHI joins.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86725 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-10 22:01:05 +00:00
Jakob Stoklund Olesen
e35e3c33dc Refactoring: Extract method PHIElimination::isLiveOut(). 
Clean up some whitespace.
No functional changes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86724 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-10 22:00:56 +00:00
Duncan Sands
f07c9497b2 Codegen support for the llvm.invariant/lifetime.start/end intrinsics: 
just throw them away.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86678 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-10 09:08:09 +00:00
Dan Gohman
7071528e4e Remove an unused variable. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86642 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-10 01:37:57 +00:00
Dan Gohman
b2e40990c4 Minor code simplification. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86641 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-10 01:36:20 +00:00
Jeffrey Yasskin
81cf432569 Fix DenseMap iterator constness. 
This patch forbids implicit conversion of DenseMap::const_iterator to
DenseMap::iterator which was possible because DenseMapIterator inherited
(publicly) from DenseMapConstIterator. Conversion the other way around is now
allowed as one may expect.

The template DenseMapConstIterator is removed and the template parameter
IsConst which specifies whether the iterator is constant is added to
DenseMapIterator.

Actually IsConst parameter is not necessary since the constness can be
determined from KeyT but this is not relevant to the fix and can be addressed
later.

Patch by Victor Zverovich!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86636 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-10 01:02:17 +00:00
David Goodwin
c2e8a7e8d2 Fixed to address code review. No functional changes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86634 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-10 00:48:55 +00:00
David Goodwin
0855dee564 Allow targets to specify register classes whose member registers should not be renamed to break anti-dependencies. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86628 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-10 00:15:47 +00:00
Dan Gohman
ba565bfc21 Remove an unneeded #include. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86601 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-09 22:28:30 +00:00
Mike Stump
70e5e6834c Fix for 64-bit builds. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86600 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-09 22:28:21 +00:00
Dan Gohman
80f6c58981 Print "..." instead of all the uninteresting register clobbers on call 
instructions. This makes CodeGen dumps significantly less noisy.

Example before:
  BL <ga:@bar>, %R0<imp-def>, %R1<imp-def,dead>, %R2<imp-def,dead>, %R3<imp-def,dead>, %R12<imp-def,dead>, %LR<imp-def,dead>, %D0<imp-def,dead>, %D1<imp-def,dead>, %D2<imp-def,dead>, %D3<imp-def,dead>, %D4<imp-def,dead>, %D5<imp-def,dead>, %D6<imp-def,dead>, %D7<imp-def,dead>, %D16<imp-def,dead>, %D17<imp-def,dead>, %D18<imp-def,dead>, %D19<imp-def,dead>, %D20<imp-def,dead>, %D21<imp-def,dead>, %D22<imp-def,dead>, %D23<imp-def,dead>, %D24<imp-def,dead>, %D25<imp-def,dead>, %D26<imp-def,dead>, %D27<imp-def,dead>, %D28<imp-def,dead>, %D29<imp-def,dead>, %D30<imp-def,dead>, %D31<imp-def,dead>, %CPSR<imp-def,dead>, %FPSCR<imp-def,dead>

Same example after:
  BL <ga:@bar>, %R0<imp-def>, %R1<imp-def,dead>, %LR<imp-def,dead>, %CPSR<imp-def,dead>, ...


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86583 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-09 19:38:45 +00:00
David Goodwin
980d494ab6 Fix dependencies added to model memory aliasing for post-RA scheduling. The dependencies were overly conservative for memory access that are known not to alias. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86580 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-09 19:22:17 +00:00
Dan Gohman
28a4c78621 Constify MachineFunctionAnalysis' TargetMachine reference. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86564 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-09 18:18:49 +00:00
Evan Cheng
df8ed02473 Hide a couple of options. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86522 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-09 06:49:37 +00:00
Evan Cheng
63040ce858 80 col. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86521 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-09 06:49:22 +00:00
Lang Hames
16dcaf5996 Moved some ManagedStatics out of the SlotIndexes header. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86446 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-08 08:49:59 +00:00
Anton Korobeynikov
8983da729a Add 8 bit libcalls and make use of them for msp430 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86384 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-07 17:14:39 +00:00
Chris Lattner
e880efe446 Fix PR5421 by APInt'izing switch lowering. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86354 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-07 07:50:34 +00:00
Lang Hames
d6ef7fac1a Update some globals to use ManagedStatic. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86342 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-07 05:50:28 +00:00
Mon P Wang
bdea34807a Fix memoizing of CvtRndSatSDNode 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86340 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-07 04:46:25 +00:00
Evan Cheng
78e5c1140a - Add TargetInstrInfo::isIdentical(). It's similar to MachineInstr::isIdentical 
except it doesn't care if the definitions' virtual registers differ. This is
  used by machine LICM and other MI passes to perform CSE.
- Teach Thumb2InstrInfo::isIdentical() to check two t2LDRpci_pic are identical.
  Since pc relative constantpool entries are always different, this requires it
  it check if the values can actually the same.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86328 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-07 03:52:02 +00:00
Kenneth Uildriks
b4997aeab7 Add code to check at SelectionDAGISel::LowerArguments time to see if return values can be lowered to registers. Coming soon, code to perform sret-demotion if return values cannot be lowered to registers 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86324 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-07 02:11:54 +00:00
Jakob Stoklund Olesen
3de23e6f6c Fix inverted conflict test in -early-coalesce. 
A non-identity copy cannot be coalesced when the phi join destination register
is live at the copy site.

Also verify the condition that the PHI join source register is only used in
the PHI join. Otherwise the coalescing is invalid.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86322 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-07 01:58:40 +00:00
Bob Wilson
c0ef244499 Fix comment typos. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86295 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-06 22:38:38 +00:00
Dan Gohman
8d4e3b5b48 Use WriteAsOperand to print GlobalAddress MachineOperands. This 
prints them with the leading '@'.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86261 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-06 18:03:10 +00:00
Devang Patel
84c73e9b82 Do not bother to emit debug info for nameless global variable. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86259 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-06 17:58:12 +00:00
Devang Patel
465c3bed16 Do not try to emit debug info entry for dead global variable. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86212 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-06 01:30:04 +00:00
Dan Gohman
40c57860da Factor out the printing of the leading tab into printInlineAsm. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86199 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-06 00:04:54 +00:00
Dan Gohman
568a3be545 Fix the label name generation for address-taken labels to avoid potential 
problems with name collisions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86189 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-05 23:14:35 +00:00
Lang Hames
fbb8fa247e Added support for renumbering existing index list elements. Removed some junk from the initial numbering code in runOnMachineFunction. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86184 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-05 22:20:57 +00:00
David Goodwin
7040d6e2f5 Fix bug in aggressive antidep breaking; liveness was not updated correctly for regions that do not have antidep candidates. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86172 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-05 21:06:09 +00:00
Dan Gohman
c5600c89d6 Avoid printing a redundant space in SDNode->dump(). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86151 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-05 18:49:11 +00:00
David Goodwin
98f2f1aff8 Replace std::map.at() with std::map[]. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86102 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-05 01:45:50 +00:00
David Goodwin
54097836f3 Break anti-dependencies using free registers in a round-robin manner to avoid introducing new anti-dependencies. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86098 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-05 01:19:35 +00:00
Evan Cheng
517e2556e3 Now that code placement optimization pass is run for JIT, make sure it's before pre-emit passes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86092 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-05 01:16:59 +00:00
Evan Cheng
9fb744e169 Code refactoring. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86085 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-05 00:51:13 +00:00
David Goodwin
5be870add9 Correctly add chain dependencies around calls and unknown-side-effect instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86080 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-05 00:16:44 +00:00
Devang Patel
61ecbd196c While calculating original type size for a derived type, handle type variants encoded as DIDerivedType appropriately. 
This improves bitfield support.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86073 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-04 23:48:00 +00:00
Devang Patel
33db508283 Fix DW_AT_data_member_location for bit-fields. It points to the location of annonymous field that covers respective field. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86054 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-04 22:06:12 +00:00
Lang Hames
0368e500eb Handle empty/tombstone keys for LiveIndex more cleanly. Check for index sanity when constructing index list entries. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86049 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-04 21:24:15 +00:00
Eric Christopher
522c01ac65 Add some options to disable various code gen optimizations. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86044 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-04 19:57:50 +00:00
Devang Patel
c416d3b25d Array element size does not match array size but array is not a bitfield. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86043 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-04 19:37:40 +00:00
Jakob Stoklund Olesen
ad68264f59 Print out an informative comment for KILL instructions. 
The KILL pseudo-instruction may survive to the asm printer pass, just like the IMPLICIT_DEF. Print the KILL as a comment instead of just leaving a blank line in the output.

With -asm-verbose=0, a blank line is printed, like IMPLICIT?DEF.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86041 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-04 19:24:37 +00:00
Evan Cheng
50608bac2f RangeIsDefinedByCopyFromReg() should check for subreg_to_reg, insert_subreg, 
and extract_subreg as a "copy" that defines a valno.
Also fixes a typo. These two issues prevent a simple subreg coalescing from
happening before.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86022 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-04 08:33:14 +00:00
Douglas Gregor
dece1e217a Fix CMake makefiles 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85994 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-04 01:32:06 +00:00
Lang Hames
233a60ec40 The Indexes Patch. 
This introduces a new pass, SlotIndexes, which is responsible for numbering
instructions for register allocation (and other clients). SlotIndexes numbering
is designed to match the existing scheme, so this patch should not cause any
changes in the generated code.

For consistency, and to avoid naming confusion, LiveIndex has been renamed
SlotIndex.

The processImplicitDefs method of the LiveIntervals analysis has been moved
into its own pass so that it can be run prior to SlotIndexes. This was
necessary to match the existing numbering scheme.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85979 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-03 23:52:08 +00:00
Bob Wilson
888acc35a3 Fix branch folding bug for indirect branches: for a block containing only 
an unconditional branch (possibly from tail merging), this code is
trying to redirect all of its predecessors to go directly to the branch
target, but that isn't feasible for indirect branches.  The other
predecessors (that don't end with indirect branches) could theoretically
still be handled, but that is not easily done right now.

The AnalyzeBranch interface doesn't currently let us distinguish jump table
branches from indirect branches, and this code is currently handling
jump tables.  To avoid punting on address-taken blocks, we would have to give
up handling jump tables.  That seems like a bad tradeoff.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85975 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-03 23:44:31 +00:00
Evan Cheng
777c6b7caa Re-apply 85799. It turns out my code isn't buggy. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85947 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-03 21:40:02 +00:00
David Goodwin
4de099d8ca Do a scheduling pass ignoring anti-dependencies to identify candidate registers that should be renamed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85939 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-03 20:57:50 +00:00
David Goodwin
a9e610768b <rdar://problem/7352605>. When building schedule graph use mayAlias information to avoid chaining loads/stores of spill slots with non-aliased memory ops. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85934 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-03 20:15:00 +00:00
Devang Patel
1b845976d0 Ignore unnamed variables. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85909 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-03 18:30:27 +00:00
Jeffrey Yasskin
36d52bf4df Fix a funky "declared with greater visibility than the type of its field" 
warning from gcc by removing VISIBILITY_HIDDEN attributes.  


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85873 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-03 06:29:36 +00:00
Evan Cheng
454ac8961b Revert 85799 for now. It might be breaking llvm-gcc driver. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85827 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-02 21:49:14 +00:00
David Goodwin
7c9b1ac507 Chain dependencies used to enforce memory order should have latency of 0 (except for true dependency of Store followed by aliased Load... we estimate that case with a single cycle of latency assuming the hardware will bypass) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85807 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-02 17:06:28 +00:00
Evan Cheng
72ed88feac Initilize the machine LICM CSE map upon the first time an instruction is hoisted to 
the loop preheader. Add instructions which are already in the preheader block that
may be common expressions of those that are hoisted out. These does get a few more
instructions CSE'ed.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85799 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-02 08:09:49 +00:00
Evan Cheng
f57b1baa44 Add PseudoSourceValue::mayAlias. It returns true if the object can ever alias any LLVM IR value. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85762 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-01 23:50:04 +00:00
Dan Gohman
b953c944b6 Fix a missing newline in the dwarf output code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85684 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-31 20:59:09 +00:00
Dan Gohman
0ba90f3e34 Make -print-machineinstrs more readable. 
- Be consistent when referring to MachineBasicBlocks: BB#0.
 - Be consistent when referring to virtual registers: %reg1024.
 - Be consistent when referring to unknown physical registers: %physreg10.
 - Be consistent when referring to known physical registers: %RAX
 - Be consistent when referring to register 0: %reg0
 - Be consistent when printing alignments: align=16
 - Print jump table contents.
 - Don't print host addresses, in general.
 - and various other cleanups.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85682 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-31 20:19:03 +00:00
Dan Gohman
499a9377a3 Factor out more code into addCommonCodeGenPasses. The JIT wasn't 
previously running CodePlacementOpt. Also print headers before
each dump in -print-machineinstrs mode, so that it's clear which
dump is which.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85681 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-31 20:17:39 +00:00
Dan Gohman
9f476e3179 Remove CodeGenLICM. It's largely obsoleted by MachineLICM's new ability 
to unfold loop-invariant loads.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85657 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-31 14:35:41 +00:00
Dan Gohman
75832d7d4f When discarding SrcValue information, discard all of it so that code 
that uses this information knows to behave conservatively.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85654 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-31 14:14:04 +00:00
Dan Gohman
60d686df54 Fix 80-column violation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85653 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-31 14:12:53 +00:00
Eric Christopher
cdfa666c30 Fix warning with gcc-4.0 and signed/unsigned. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85648 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-31 09:24:35 +00:00
Dan Gohman
1410b7620a Add assertion checks here to turn silent miscompiles into aborts. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85639 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-30 23:59:06 +00:00
Dan Gohman
4cddfd9b6f Don't mark registers dead here when processing nodes with MVT::Flag 
results. This works around a problem affecting targets which rely on
MVT::Flag to handle physical register defs.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85638 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-30 23:57:47 +00:00
Dan Gohman
0115e164ba Fix MachineLICM to use the correct virtual register class when 
unfolding loads for hoisting.  getOpcodeAfterMemoryUnfold returns the
opcode of the original operation without the load, not the load
itself, MachineLICM needs to know the operand index in order to get
the correct register class. Extend getOpcodeAfterMemoryUnfold to
return this information.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85622 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-30 22:18:41 +00:00
Lang Hames
788fa17af8 Stop the iterator in ValueLiveAt from potentially running off the end of the interval. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85599 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-30 18:12:09 +00:00
Dan Gohman
ab918103d2 Don't delete blocks which have their address taken. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85572 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-30 02:13:27 +00:00
Dan Gohman
dfbbf6e023 Mention if a block has its address taken in debug output. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85571 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-30 02:08:26 +00:00
Dan Gohman
6a55e62996 Add support for BlockAddress static initializers. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85562 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-30 01:45:18 +00:00
Dan Gohman
6ae5b32e48 Add a FIXME comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85559 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-30 01:38:20 +00:00
Dan Gohman
b1cac33856 Add some comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85558 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-30 01:34:35 +00:00
Dan Gohman
8c2b52552c Initial target-independent CodeGen support for BlockAddresses. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85556 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-30 01:27:03 +00:00
David Goodwin
5b3c308970 Between scheduling regions, correctly maintain anti-dep breaking state so that we don't incorrectly rename registers that span these regions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85537 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-29 23:30:59 +00:00
Dan Gohman
6c1de1830b Remove some unnecessary spaces in debug output. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85536 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-29 23:30:06 +00:00
Dan Gohman
e1f188fe27 Move some code from being emitted as boilerplate duplicated in every 
*ISelDAGToDAG.cpp to being regular code in SelectionDAGISel.cpp.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85530 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-29 22:30:23 +00:00
David Goodwin
67a8a7b3bd Fix a couple of bugs in aggressive anti-dep breaking. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85522 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-29 19:17:04 +00:00
Bob Wilson
7b888b8ad0 Refactor complicated predicate into a separate function. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85519 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-29 18:40:06 +00:00
Dan Gohman
533297b58d Rename usesCustomDAGSchedInserter to usesCustomInserter, and update a 
bunch of associated comments, because it doesn't have anything to do
with DAGs or scheduling. This is another step in decoupling MachineInstr
emitting from scheduling.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85517 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-29 18:10:34 +00:00
Dan Gohman
5c95230f25 Refactor the code for unfolding a load into a separate function. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85515 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-29 17:47:20 +00:00
Bill Wendling
a33ac6a4c1 Reapply r85338. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85514 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-29 17:39:46 +00:00
Jim Grosbach
f2ce516828 When the function is doing dynamic stack realignment, the spill slot will be 
indexed via the stack pointer, even if a frame pointer is present. Update the
heuristic to place it nearest the stack pointer in that case, rather than
nearest the frame pointer.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85474 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-29 02:33:47 +00:00
Dale Johannesen
78c5cdaf2a When there is a 2-instruction spill sequence, record 
the second (store) instruction in SpillSlotToUsesMap
consistently.  I don't think this matters functionally,
but it's cleaner and Evan wants it this way.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85463 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-29 01:15:40 +00:00
Bill Wendling
8bedf97f68 Don't put in these EH changes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85460 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-29 00:37:35 +00:00
Bill Wendling
f58898fd41 Reverting r85338 for now. It's causing a bootstrap failure on PPC darwin9. 
--- Reverse-merging r85338 into '.':
U    lib/CodeGen/SimpleRegisterCoalescing.cpp
U    lib/CodeGen/SimpleRegisterCoalescing.h



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85454 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-29 00:22:16 +00:00
Bob Wilson
2c04dae715 Reimplement BranchFolding change to avoid tail merging for a 1 instruction 
common tail, except when the OptimizeForSize function attribute is present.
Radar 7338114.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85441 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-28 22:10:20 +00:00
Dale Johannesen
e841d2f867 When we generate spill code, then decide we don't need 
to spill after all, we weren't handling 2-instruction
spill sequences correctly (PPC Altivec).  We need to
remove the store in this case.  Removing the other
instruction(s) would be goodness but is not needed for
correctness, and isn't done here.  7331562.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85437 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-28 21:56:18 +00:00
Eric Christopher
7e5d2ff20f Make sure we return the right sized type here. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85436 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-28 21:32:16 +00:00
Bob Wilson
a597103c32 Revert r85346 change to control tail merging by CodeGenOpt::Level. 
I'm going to redo this using the OptimizeForSize function attribute.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85426 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-28 20:46:46 +00:00
David Goodwin
82c7248518 Make AntiDepReg.h internal. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85412 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-28 18:29:54 +00:00
Dan Gohman
1507cd03a6 Don't call SDNode::isPredecessorOf when it isn't necessary. If the load's 
chains have no users, they can't be predecessors of the condition.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85394 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-28 15:28:02 +00:00
Dan Gohman
b8457a1a29 Simplify this code: if the unfolded load can't be hoisted, just delete 
the new instructions and leave the old one in place.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85393 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-28 15:23:36 +00:00
Dan Gohman
6688d61797 Rewrite SelectionDAG::isPredecessorOf to be iterative instead of 
recursive to avoid consuming extraordinary amounts of stack space
when processing tall graphs.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85369 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-28 03:44:30 +00:00
Dan Gohman
589f1f5a43 Teach MachineLICM to unfold loads from constant memory from 
otherwise unhoistable instructions in order to allow the loads
to be hoisted.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85364 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-28 03:21:57 +00:00
Evan Cheng
a1eaa3c52b Add a second ValueType argument to isFPImmLegal. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85361 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-28 01:43:28 +00:00
Dan Gohman
a104d1eab2 Mark dead physregdefs dead immediately. This helps MachineSink and 
MachineLICM and other things which run before LiveVariables is run.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85360 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-28 01:13:53 +00:00
Dan Gohman
83f6120c9a Allow constants of different types to share constant pool entries 
if they have compatible encodings.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85359 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-28 01:12:16 +00:00
Chris Lattner
ab21db79ef rename indbr -> indirectbr to appease the residents of #llvm. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85351 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-28 00:19:10 +00:00
Bob Wilson
cd4f04d6bc Record CodeGen optimization level in the BranchFolding pass so that we can 
use it to control tail merging when there is a tradeoff between performance
and code size.  When there is only 1 instruction in the common tail, we have
been merging.  That can be good for code size but is a definite loss for
performance.  Now we will avoid tail merging in that case when the
optimization level is "Aggressive", i.e., "-O3".  Radar 7338114.

Since the IfConversion pass invokes BranchFolding, it too needs to know
the optimization level.  Note that I removed the RegisterPass instantiation
for IfConversion because it required a default constructor.  If someone
wants to keep that for some reason, we can add a default constructor with
a hard-wired optimization level.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85346 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-27 23:49:38 +00:00
Lang Hames
1239c9656b Fixed a bug in the coalescer where intervals were occasionally merged despite a real interference. This fixes rdar://problem/7157961. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85338 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-27 23:16:58 +00:00
Dan Gohman
eef55dc3fd Update the MachineBasicBlock CFG for an indirect branch. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85325 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-27 22:10:34 +00:00
Dan Gohman
64825153a2 Add CodeGen support for indirect branches. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85323 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-27 21:56:26 +00:00
Devang Patel
bdf45cbe15 Do not held on to DenseMap slot accross map insertion. The insertion may cause the map to grow rending the slot invalid. 
Use this opportunity to use ValueMap instead of DenseMap.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85298 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-27 20:47:17 +00:00
Chris Lattner
98eef869ae don't use stdio 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85296 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-27 20:42:54 +00:00
Evan Cheng
eb2f969a4d Do away with addLegalFPImmediate. Add a target hook isFPImmLegal which returns true if the fp immediate can be natively codegened by target. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85281 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-27 19:56:55 +00:00
Chris Lattner
f9be95f867 add enough support for indirect branch for the feature test to pass 
(assembler,asmprinter, bc reader+writer) and document it.  Codegen
currently aborts on it.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85274 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-27 19:13:16 +00:00
Chris Lattner
75c478a96a pseudosourcevalue is also still using getGlobalContext(), so it isn't 
thread safe either.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85253 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-27 17:02:08 +00:00
Eric Christopher
7b5e61707a Add objectsize intrinsic and hook it up through codegen. Doesn't 
do anything than return "I don't know" at the moment.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85189 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-27 00:52:25 +00:00
Victor Hernandez
046e78ce55 Remove FreeInst. 
Remove LowerAllocations pass.
Update some more passes to treate free calls just like they were treating FreeInst.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85176 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-26 23:43:48 +00:00
David Goodwin
e10deca33e Allow the aggressive anti-dep breaker to process the same region multiple times. This is necessary because new anti-dependencies are exposed when "current" ones are broken. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85166 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-26 22:31:16 +00:00
David Goodwin
ada0ef86d9 Define virtual destructor in *.cpp file. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85146 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-26 19:41:00 +00:00
David Goodwin
348777110a Add aggressive anti-dependence breaker. Currently it is not the default for any target. Enable with -break-anti-dependencies=all. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85145 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-26 19:32:42 +00:00
Dan Gohman
91203cf87b When checking whether a def of an aliased register is dead, ask the 
machineinstr whether the aliased register is dead, rather than the original
register is dead. This allows it to get the correct answer when examining
an instruction like this:
  CALLpcrel32 <ga:foo>, %AL<imp-def>, %EAX<imp-def,dead>
where EAX is dead but a subregister of it is still live. This fixes PR5294.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85135 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-26 18:26:18 +00:00
David Goodwin
2e7be612d5 Break anti-dependence breaking out into its own class. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85127 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-26 16:59:04 +00:00
Evan Cheng
a5dc45e3c8 - Revert some changes from 85044, 85045, and 85047 that broke x86_64 tests and 
bootstrapping. It's not safe to leave identity subreg_to_reg and insert_subreg
  around.
- Relax register scavenging to allow use of partially "not-live" registers. It's
  common for targets to operate on registers where the top bits are undef. e.g.
  s0 =
  d0 = insert_subreg d0<undef>, s0, 1
  ...
     = d0
  When the insert_subreg is eliminated by the coalescer, the scavenger used to
  complain. The previous fix was to keep to insert_subreg around. But that's
  brittle and it's overly conservative when we want to use the scavenger to 
  allocate registers. It's actually legal and desirable for other instructions
  to use the "undef" part of d0. e.g.
  s0 =
  d0 = insert_subreg d0<undef>, s0, 1
  ...
  s1 =
     = s1
     = d0
  We probably need add a "partial-undef" marker on machine operand so the
  machine verifier would not complain.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85091 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-26 04:56:07 +00:00
Chandler Carruth
8b67f774e9 Move DataTypes.h to include/llvm/System, update all users. This breaks the last 
direct inclusion edge from System to Support.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85086 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-26 01:35:46 +00:00
Evan Cheng
427c3ba97a Use isIdentityCopy. Fix a bozo bug (flipped condition) in InvalidateRegDef. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85047 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-25 07:51:47 +00:00
Evan Cheng
d98e30f618 Code clean up. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85046 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-25 07:49:57 +00:00
Evan Cheng
d66f0015ad Do not delete identity insert_subreg even if dest is virtual. Let later passes delete them. This avoids register scavenger complain. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85045 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-25 07:48:51 +00:00
Nick Lewycky
f5a86f45e7 Remove includes of Support/Compiler.h that are no longer needed after the 
VISIBILITY_HIDDEN removal.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85043 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-25 06:57:41 +00:00
Nick Lewycky
6726b6d75a Remove VISIBILITY_HIDDEN from class/struct found inside anonymous namespaces. 
Chris claims we should never have visibility_hidden inside any .cpp file but
that's still not true even after this commit.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85042 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-25 06:33:48 +00:00
Jim Grosbach
07d4964d1f When the scavenger is looking for a good candidate location to restore from a 
spill, it should avoid doing so inside the live range of a virtual register.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85026 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-25 00:45:07 +00:00
Dan Gohman
32663b719b Rename isLoopExit to isLoopExiting, for consistency with the wording 
used elsewhere - an exit block is a block outside the loop branched to
from within the loop. An exiting block is a block inside the loop that
branches out.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85019 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-24 23:34:26 +00:00
Anton Korobeynikov
efcd89a5f6 Add some asserts to catch copyRegToReg() fails early 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84983 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-24 00:27:00 +00:00
Evan Cheng
c9dfeb1be8 Identity copies should not contribute to spill weight. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84978 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-23 23:09:19 +00:00
Dan Gohman
7abbd04e90 APInt-ify the gep scaling code, so that it correctly handles the case where 
the scale overflows pointer-sized arithmetic. This fixes PR5281.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84954 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-23 17:57:43 +00:00
Bill Wendling
dfd85c142f Neuter stack protectors by only checking character arrays. This is what GCC 
does.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84916 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-23 00:01:05 +00:00
David Goodwin
4c3715c2e5 Allow the target to select the level of anti-dependence breaking that should be performed by the post-RA scheduler. The default is none. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84911 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-22 23:19:17 +00:00
Bill Wendling
48dc29ef91 Tidying up some code and comments. No functionality change. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84894 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-22 20:48:59 +00:00
Anton Korobeynikov
443b2153e3 Fix null pointer dereference. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84806 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-22 00:15:17 +00:00
Dan Gohman
6d31268a7d Revert the main portion of r31856. It was causing BranchFolding 
to break up CFG diamonds by banishing one of the blocks to the end of
the function, which is bad for code density and branch size.

This does pessimize MultiSource/Benchmarks/Ptrdist/yacr2, the
benchmark cited as the reason for the change, however I've examined
the code and it looks more like a case of gaming a particular
branch than of being generally applicable.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84803 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-22 00:03:58 +00:00
Jim Grosbach
29bed1c8bb The spill restore needs to be resolved to the SP/FP just like the spill 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84792 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-21 22:59:56 +00:00
Jim Grosbach
3325537682 Cleanup of frame index scavenging. Better code flow and more accurately 
handles T2 and ARM use cases.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84761 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-21 15:26:21 +00:00
Evan Cheng
5affca0763 Need a comma after imp-use. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84749 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-21 07:56:02 +00:00
Dan Gohman
c1ae8c9b8f Revert r84658 and r84691. They were causing llvm-gcc bootstrap to fail. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84727 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-21 01:44:44 +00:00
David Goodwin
7441d14873 Respect src register allocation requirements when breaking anti-dependencies. Remove some dead code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84691 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-20 22:50:43 +00:00
Anton Korobeynikov
2bcf60a9cc Fix invalid for vector types fneg(bitconvert(x)) => bitconvert(x ^ sign) 
transform.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84683 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-20 21:37:45 +00:00
Lang Hames
3fd7a68ba9 Oops. Backing out 84681 - needs to wait for the indexing patch. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84682 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-20 21:28:22 +00:00
Lang Hames
67f25669db Added some debugging output to pre-alloc splitting. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84681 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-20 21:25:13 +00:00
David Goodwin
480c529e02 Checkpoint more aggressive anti-dependency breaking for post-ra scheduler. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84658 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-20 19:54:44 +00:00
Jim Grosbach
03d02d4faa Better handle instructions that re-def a scratch register 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84657 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-20 19:52:35 +00:00
Jim Grosbach
f7a0c0de6d Register re-use for scavenged frame indices must check for re-deginition 
of the register in the instruction which kills the scavenged value.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84641 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-20 16:33:57 +00:00
Dan Gohman
07adb85cb7 Re-apply r84295, with fixes to how the loop "top" and "bottom" blocks are 
tracked. Instead of trying to manually keep track of these locations
while doing complex modifications, just recompute them when they're needed.
This fixes a bug in which the TopMBB and BotMBB were not correctly updated,
leading to invalid transformations.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84598 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-20 04:50:37 +00:00
Evan Cheng
5f4fb86d58 Trim unnecessary includes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84597 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-20 04:23:20 +00:00
Dan Gohman
81b16a3558 Add getTopBlock and getBottomBlock member functions to MachineLoopInfo. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84596 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-20 04:16:37 +00:00
Evan Cheng
0222a8cfb8 If the physical register being spilled does not have an interval, spill its sub-registers instead. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84586 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-20 01:31:09 +00:00
Jim Grosbach
7e831db1d4 Enable post-pass frame index register scavenging for ARM and Thumb2 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84585 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-20 01:26:58 +00:00