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Author SHA1 Message Date
Bill Wendling
1c40c8c242 Oy! When reverting r68073, I added in experimental code. Sorry... 
llvm-svn: 68099
 2009-03-31 08:41:31 +00:00
Owen Anderson
59cff6919d Remove the "fast" cases for spill and restore point determination, as these were subtlely wrong in obscure cases. Patch the testcase 
to account for this change.

llvm-svn: 68093
 2009-03-31 08:27:09 +00:00
Bill Wendling
4706abded2 Revert r68073. It's causing a failure in the Apple-style builds. 
llvm-svn: 68092
 2009-03-31 08:26:26 +00:00
Chris Lattner
95a32aa18b shrink subclassid, liberating some bits for future (ab)use. 
llvm-svn: 68087
 2009-03-31 07:25:22 +00:00
Dan Gohman
cba99ee717 Fix live-out reg logic to not insert over-aggressive AssertZExt 
instructions. This fixes lua.

llvm-svn: 68083
 2009-03-31 01:38:29 +00:00
Evan Cheng
5c02e62620 X86 address mode isel tweak. If the base of the address is also used by a CopyToReg (i.e. it's likely live-out), do not fold the sub-expressions into the addressing mode to avoid computing the address twice. The CopyToReg use will be isel'ed to a LEA, re-use it for address instead. 
This is not yet enabled.

llvm-svn: 68082
 2009-03-31 01:13:53 +00:00
Douglas Gregor
41ab75e9ef Really, really fix PointerUnion3::is 
llvm-svn: 68079
 2009-03-31 00:34:31 +00:00
Dan Gohman
29694088d3 Except in asm-verbose mode, avoid printing labels for blocks that are 
only reachable via fall-through edges. This dramatically reduces the
number of labels printed, and thus also the number of labels the
assembler must parse and remember.

llvm-svn: 68073
 2009-03-30 22:55:17 +00:00
Devang Patel
ec65625744 Loop Index Split can eliminate a loop if it can determin if loop body is executed only once. There was a bug in determining IV based value of the iteration for which the loop body is executed. Fix it. 
llvm-svn: 68071
 2009-03-30 22:24:10 +00:00
Douglas Gregor
0beaefea25 Make PointerUnion3::get work properly 
llvm-svn: 68067
 2009-03-30 21:44:13 +00:00
Evan Cheng
3e30bcbd69 When optimzing a mul by immediate into two, the resulting mul's should get a x86 specific node to avoid dag combiner from hacking on them further. 
llvm-svn: 68066
 2009-03-30 21:36:47 +00:00
Evan Cheng
d7824e208a Turn a 2-address instruction into a 3-address one when it's profitable even if the two-address operand is killed. 
e.g.
%reg1024<def> = MOV r1
%reg1025<def> = ADD %reg1024, %reg1026
r0            = MOV %reg1025

If it's not possible / profitable to commute ADD, then turning ADD into a LEA saves a copy.

llvm-svn: 68065
 2009-03-30 21:34:07 +00:00
Chris Lattner
ccc73c9327 update comment. 
llvm-svn: 68060
 2009-03-30 20:44:04 +00:00
Bill Wendling
76042faa52 Balance out quote in debug output. 
llvm-svn: 68059
 2009-03-30 20:32:22 +00:00
Bill Wendling
3b2cea6ef5 Fix grammar-o in comment. 
llvm-svn: 68057
 2009-03-30 20:30:02 +00:00
Chris Lattner
a172ae1d4f add a PointerUnion3 class and generalize PointerUnion to work with 
anything pointer-like, which may or may not actually be a pointer.

llvm-svn: 68056
 2009-03-30 20:29:27 +00:00
Chris Lattner
2d00a451cb fix the PointerLikeTypeTraits specialization for PointerIntPair to 
allow the traits to be specified as well.

llvm-svn: 68055
 2009-03-30 20:28:50 +00:00
Dan Gohman
abcfb30fc2 Constify arguments in isSuccessor and isLayoutSuccessor. 
llvm-svn: 68054
 2009-03-30 20:06:29 +00:00
Dan Gohman
d85cf9d361 Update the polygen grammer to reflect that zext and sext are no longer 
valid argument attributes (zeroext and signext are).

llvm-svn: 68053
 2009-03-30 19:59:02 +00:00
John Mosby
9b1b8d54fe docs/TestingGuide.html: correction to prev. text (objdir!=srcdir required for running test-suite), removed refs to llvm-test 
llvm-svn: 68051
 2009-03-30 18:56:53 +00:00
Bob Wilson
d59a64d436 Fix comment to match function name. 
llvm-svn: 68050
 2009-03-30 18:49:37 +00:00
Devang Patel
94dbbb5768 getEntryFor() may invalidate DenseMap iterator. 
Walking an invalidated iterator is not a good idea.

llvm-svn: 68047
 2009-03-30 18:34:47 +00:00
Mike Stump
b50565295f Add ccc back for now. 
llvm-svn: 68038
 2009-03-30 17:43:04 +00:00
Anton Korobeynikov
a11549d252 Clearify local/global relocations wording 
llvm-svn: 68037
 2009-03-30 17:38:00 +00:00
Anton Korobeynikov
880f98920c Fix thinko: put stuff with both global and local relocations into data.rel{.ro}, not .local 
llvm-svn: 68036
 2009-03-30 17:37:43 +00:00
Anton Korobeynikov
497fd0e996 Tweak test for recent relro stuff 
llvm-svn: 68035
 2009-03-30 15:28:40 +00:00
Anton Korobeynikov
d03a7a7e8c Fix infinite looping 
llvm-svn: 68034
 2009-03-30 15:28:21 +00:00
Anton Korobeynikov
b026804e7c Properly propagate Kind. 
llvm-svn: 68033
 2009-03-30 15:28:00 +00:00
Anton Korobeynikov
0404baca28 Do not propagate ELF-specific stuff (data.rel) into other targets. This simplifies code and also ensures correctness. 
llvm-svn: 68032
 2009-03-30 15:27:43 +00:00
Anton Korobeynikov
2ea565a37b Add data.rel stuff 
llvm-svn: 68031
 2009-03-30 15:27:03 +00:00
Chris Lattner
1901988355 fix some validation problems. 
llvm-svn: 68026
 2009-03-30 06:34:59 +00:00
Evan Cheng
5c460dbc3d Forgot this test. 
llvm-svn: 68025
 2009-03-30 06:17:34 +00:00
John Mosby
8d4d6376bb Clarify section on setting up and running test-suite 
llvm-svn: 68023
 2009-03-30 04:37:51 +00:00
Misha Brukman
78da0fbc46 Updated the comment for isArithmeticShift() to match reality. 
llvm-svn: 68016
 2009-03-29 20:41:38 +00:00
Bill Wendling
668e03b2b8 Constify check. This fixes PR3900. 
llvm-svn: 68013
 2009-03-29 20:08:56 +00:00
Anton Korobeynikov
d24f576124 Testcase for recent ro/relocs stuff 
llvm-svn: 68008
 2009-03-29 17:14:57 +00:00
Anton Korobeynikov
424bf7a0b5 IA64 is as weird as Alpha wrt r/o relocs :) 
llvm-svn: 68007
 2009-03-29 17:14:35 +00:00
Anton Korobeynikov
55097e65d6 Alpha always requires global relocations to be r/w regardless of PIC. 
llvm-svn: 68006
 2009-03-29 17:14:14 +00:00
Anton Korobeynikov
ec131d94ff Honour relocation behaviour stuff for ro objects 
llvm-svn: 68005
 2009-03-29 17:13:49 +00:00
Anton Korobeynikov
9b5ffaf6ca Extend the relocation tracker handler, so we can filter on different 'kinds' of relocations required. 
llvm-svn: 68004
 2009-03-29 17:13:18 +00:00
Duncan Sands
602234cdf3 Fix PR3899: add support for extracting floats from vectors 
when using -soft-float.
Based on a patch by Jakob Stoklund Olesen.

llvm-svn: 67996
 2009-03-29 13:51:06 +00:00
Chris Lattner
8e83bd3891 add missing space. 
llvm-svn: 67995
 2009-03-29 13:26:05 +00:00
Chris Lattner
be9cd842ae add some comments, add a dyn_cast method. 
llvm-svn: 67992
 2009-03-29 07:03:30 +00:00
Chris Lattner
f3d562df05 When forming sentinels for empty/tombstone, make sure to respect the 
pointer's expected number of zero low-bits.

This should fix the breakage I introduced recently.

llvm-svn: 67990
 2009-03-29 06:33:22 +00:00
Chris Lattner
696742399a add helper method. 
llvm-svn: 67989
 2009-03-29 06:32:46 +00:00
Chris Lattner
2c6632d760 Add a simple type-safe bit-mangling pointer union class. This allows 
you to do things like:

  ///    PointerUnion<int*, float*> P;
  ///    P = (int*)0;
  ///    printf("%d %d", P.is<int*>(), P.is<float*>()); // prints "1 0"
  ///    X = P.get<int*>();     // ok.
  ///    Y = P.get<float*>();   // runtime assertion failure.
  ///    Z = P.get<double*>();  // does not compile.
  ///    P = (float*)0;
  ///    Y = P.get<float*>();   // ok.
  ///    X = P.get<int*>();     // runtime assertion failure.

llvm-svn: 67987
 2009-03-29 06:06:02 +00:00
Chris Lattner
b71e26c380 Allow a specific PointerIntPair instance to use a specific Pointer trait: 
some pointer instances have properties that not all of a type have.

llvm-svn: 67986
 2009-03-29 06:02:20 +00:00
Chris Lattner
afd5e460c3 Add a PointerLikeTypeTraits specialization for uintptr_t 
llvm-svn: 67985
 2009-03-29 06:00:21 +00:00
Chris Lattner
8957cdb71d Value* only has 2 bits free as well. 
llvm-svn: 67984
 2009-03-29 05:45:43 +00:00
Chris Lattner
9dc97aa7bf Replace the PointerLikeTypeTraits::getNumLowBitsAvailable 
function with a new NumLowBitsAvailable enum, which makes the
value available as an integer constant expression.

Add PointerLikeTypeTraits specializations for Instruction* and
Use** since they are only guaranteed 4-byte aligned.

Enhance PointerIntPair to know about (and enforce) the alignment
specified by PointerLikeTypeTraits.  This should allow things 
like PointerIntPair<PointerIntPair<void*, 1,bool>, 1, bool> 
because the inner one knows that 2 low bits are free.

llvm-svn: 67979
 2009-03-29 04:32:37 +00:00