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Author SHA1 Message Date
Dan Gohman
1dcad96dc6 Don't split critical edges during the AddUsersIfInteresting phase 
of LSR. This makes the AddUsersIfInteresting phase of LSR a pure
analysis instead of a phase that potentially does CFG modifications.

The conditions where this code would actually perform a split are
rare, and in the cases where it actually would do a split the split
is usually undone by CodeGenPrepare, and in cases where splits
actually survive into codegen, they appear to hurt more often than
they help.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70625 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-02 05:36:01 +00:00
Dan Gohman
dd47f88cfe Add Base.td to svn:ignore. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70619 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-02 01:29:12 +00:00
Chris Lattner
c650f1f141 'The attached patch fixes an issue where llc -march=cpp fails with 
"Invalid primitive type" on input containing the x86_fp80 type.'
Patch by Collin Winter!




git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70610 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-01 23:54:26 +00:00
Chris Lattner
837e59e2e8 Drop the default assumption about alignment down to 2 bits from 3. This apparently 
helps some problems on win32 platforms (PR4119)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70603 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-01 23:48:33 +00:00
Dan Gohman
7e5440404b Change the description string of the LoopInfo pass. 
"Construction" makes it sound like a pass that might
modify the CFG to construct natural loops.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70580 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-01 21:58:05 +00:00
Stuart Hastings
f0e4cac7eb Prevent looping when DenseSet is abused. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70572 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-01 20:47:53 +00:00
Misha Brukman
1af789f74c HTML-escape '>' as '>' in sample C++ code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70569 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-01 20:40:51 +00:00
Bob Wilson
5ee24e54d7 Allow CONCAT_VECTORS nodes to be legal or have custom lowering for some targets. 
Changes to take advantage of this will come later.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70560 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-01 17:55:32 +00:00
Dan Gohman
cf5ab82022 Actually insert inserted instructions into the InsertedValues map. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70557 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-01 17:13:31 +00:00
Dan Gohman
b52e1c587f Add an accessor method to allow clients to test if a given expression 
is associated with a SCEV expansion.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70556 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-01 17:08:34 +00:00
Dan Gohman
9f2d671b15 Make RequiresTypeConversion canonicalize the types before calling the 
target hooks canLosslesslyBitCastTo and isTruncateFree. This allows
targets to avoid worrying about handling all combinations of integer
and pointer types.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70555 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-01 17:07:43 +00:00
Dan Gohman
9032b78c98 When printing a SCEVUnknown with pointer type, don't print an 
artificial "ptrtoint", as it tends to clutter up complicated
expressions. The cast operators now print both source and
destination types, which is usually sufficient.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70554 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-01 17:02:22 +00:00
Dan Gohman
80dcdee0f4 Short-circuit inttoptr-ptrtoint constant expressions; these aren't 
always folded by the regular constant folder because it doesn't have
TargetData information.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70553 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-01 17:00:00 +00:00
Dan Gohman
99a1302ae4 Make SCEVExpander::addInsertedValue able to accept Values, not just 
Instructions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70552 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-01 16:58:31 +00:00
Dan Gohman
3d81e31724 Minor whitespace fix. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70551 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-01 16:56:32 +00:00
Dan Gohman
99243b3830 Fix an 80-column violation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70550 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-01 16:44:56 +00:00
Dan Gohman
10b9479f55 When creating cast scevs, canonicalize the destination type. This 
avoids duplicate scevs that differ only in type.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70549 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-01 16:44:18 +00:00
Dan Gohman
fbccdef106 Fix a compiler warning on hosts where uint64_t isn't unsigned long long. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70548 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-01 16:33:33 +00:00
Dan Gohman
cc2ad058b3 Fix some code to work if TargetLowering is not available. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70546 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-01 16:29:14 +00:00
Bill Wendling
d5a6381195 Simplify more code and add timer stuff. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70539 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-01 08:40:06 +00:00
Bill Wendling
ff86ef33e2 Simplify more code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70537 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-01 08:35:12 +00:00
Torok Edwin
e3d12854b8 hasSCEV() was declared in ScalarEvolution.h, but never defined. This must have 
gone lost during the pImpl conversion.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70536 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-01 08:33:47 +00:00
Bill Wendling
ef956fc784 Simplify some code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70534 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-01 08:32:14 +00:00
Bill Wendling
7fa8162f08 Fix whitespace. It was confusing me. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70533 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-01 08:25:13 +00:00
Mike Stump
166c9e244c Lets install the manual page with install-clang! Radar 6838692 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70529 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-01 01:47:55 +00:00
Evan Cheng
5b16cd2cdd Code clean up. Bye bye PhysRegTracker. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70524 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-01 01:03:49 +00:00
Argyrios Kyrtzidis
9eddfd3687 Fix compilation for some targets other than x86. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70522 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-30 23:50:26 +00:00
Stefanus Du Toit
c26672a2d2 Add a comment to refer to the section of the programmer's manual that explains what the pointer tagging in Use is for. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70521 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-30 23:28:50 +00:00
Argyrios Kyrtzidis
a26eae64dd Make DebugLoc independent of DwarfWriter. 
-Replace DebugLocTuple's Source ID with CompileUnit's GlobalVariable*
-Remove DwarfWriter::getOrCreateSourceID
-Make necessary changes for the above (fix callsites, etc.)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70520 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-30 23:22:31 +00:00
Argyrios Kyrtzidis
19fee415f6 Set FnEnd in JITEmitter::finishFunction to point strictly to the end of function's machine code. 
Don't include memory allocated for global variables during relocations resolution.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70517 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-30 23:01:58 +00:00
Jeffrey Yasskin
714257f5de Add a mention of TypeBuilder to the programmer's manual, and clean up the class 
comment a bit.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70515 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-30 22:33:41 +00:00
Jakob Stoklund Olesen
3a155f0e34 Join cross class copies using getCommonSubClass() 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70513 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-30 21:24:03 +00:00
Jakob Stoklund Olesen
ba67d87fe4 getCommonSubClass() - Calculate the largest common sub-class of two register 
classes.

This is implemented as a function rather than a method on TargetRegisterClass
because it is symmetric in its arguments.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70512 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-30 21:23:32 +00:00
Jakob Stoklund Olesen
7afcc6aa27 Slightly change TableGen's definition of a register subclass. 
A subclass is allowed to have a larger spill size than the superclass, and the
spill alignment must be a multiple of the superclass alignment. This causes
the following new subclass relations:

=== Alpha ===
F4RC -> F8RC

=== PPC ===
F4RC -> F8RC

=== SPU ===
R8C -> R16C -> R32C/R32FP -> R64C/R64FP -> GPRC/VECREG

=== X86 ===
FR32  -> FR64  -> VR128
RFP32 -> RFP64 -> RFP80

These subclass relations are consistent with the behaviour of -join-cross-class-copies.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70511 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-30 21:22:44 +00:00
Dan Gohman
3d739fe375 Add some comments, and tidy up some whitespace. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70510 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-30 20:48:53 +00:00
Dan Gohman
a1af757e0a Extend ScalarEvolution's getBackedgeTakenCount to be able to 
compute an upper-bound value for the trip count, in addition to
the actual trip count. Use this to allow getZeroExtendExpr and
getSignExtendExpr to fold casts in more cases.

This may eventually morph into a more general value-range
analysis capability; there are certainly plenty of places where
more complete value-range information would allow more folding.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70509 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-30 20:47:05 +00:00
Evan Cheng
0490dcb1b7 Add a smarter heuristic to determine when to coalesce a virtual register with a physical one. More specifically, it avoid tying a virtual register in the loop with a physical register defined / used outside the loop. When it determines it's not profitable, it will use the physical register as the allocation preference instead. 
This is *not* turned on by default. Testing indicates this is just as likely to pessimize code. The main issue seems to be allocation preference doesn't work effectively. That will change once I've taught register allocator "swapping".


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70503 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-30 18:39:57 +00:00
Bob Wilson
440548dd1f Rename the CurMultiClass formal parameter of TGParser::AddSubMultiClass 
so that it doesn't shadow the instance variable of the same name.
Make the parameter names in method declarations match the definitions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70502 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-30 18:26:19 +00:00
Bob Wilson
1d512df4a9 Remove unnecessary "class" keywords. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70499 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-30 17:46:20 +00:00
Bob Wilson
293b13350c Change forward declaration of MultiClass to use the "struct" keyword instead 
of "class", so that it matches the subsequent definition.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70498 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-30 17:35:11 +00:00
Torok Edwin
7f09dd2f63 Make dataflow iteration possible on Value*, not only on User*: df_ext_iterator<Value*, SmallPtrSet<const Value*, 16> > 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70496 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-30 17:09:22 +00:00
Dan Gohman
4acd12a0cb Don't try to mix integers and pointers in an icmp instruction 
in getSCEVAtScope.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70495 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-30 16:40:30 +00:00
Nick Lewycky
1d621f71c8 Oops! Missed a file in my last commit. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70491 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-30 15:29:26 +00:00
Nick Lewycky
195bea3498 Allow a user of libLTO to specify the full pathname of the gcc executable to 
run when assembling.

Wire this up to the gold plugin. You can now pass --plugin-opt gcc=/foo/bar/gcc
and it will run that gcc instead of looking for it on the path.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70490 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-30 15:24:09 +00:00
Jay Foad
4e5ea553d0 Move helper functions for optimizing division by constant into the APInt 
class.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70488 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-30 10:15:35 +00:00
Dan Gohman
78e04d4aa0 Set mayLoad on MOVZX32_NOREXrm8 too. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70466 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-30 03:11:48 +00:00
Dan Gohman
d9c1c85c2a Fix ScalarEvolution::print to print a value for any Instruction with 
a SCEVable type, not just integer types.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70463 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-30 01:30:18 +00:00
Evan Cheng
8c1474050d Mark MOV8mr_NOREX and MOV8rm_NOREX as mayStore / mayLoad respectively. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70461 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-30 00:58:57 +00:00
Bill Wendling
581b93415e Remove unused flags. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70459 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-30 00:57:51 +00:00
Chris Lattner
6c147293d6 fix a regression handling indirect results: these need to be considered 
memory operands otherwise the writebacks get lost when the inline asm 
doesn't otherwise have side effects.  This fixes rdar://6839427, though
clang really shouldn't generate these anymore.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70455 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-30 00:48:50 +00:00