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19295 Commits

Author SHA1 Message Date
Zhou Sheng
5cbf316686 Add assert to check if the attributes ZExt/SExt, NoAlias are apply to the 
correct type of parameters.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37486 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-07 06:12:03 +00:00
Evan Cheng
d4de6d91b2 Lots of bug fixes. Now finally in a reasonable state. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37485 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-07 02:12:15 +00:00
Evan Cheng
9328c1ac66 Stupid cut-n-paste bug caused me soooo much grief. Why wasn't there a compilation warning? I blame it on the FE folks. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37484 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-07 01:37:54 +00:00
Lauro Ramos Venancio
9613e871d2 Propagate alignment, section name and visibility when linking "appending 
global values".
Fix noinline linkage.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37482 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-06 22:01:12 +00:00
Tanya Lattner
682f683669 Instruct the inliner to obey the noinline attribute. Add test case. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37481 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-06 21:59:26 +00:00
Chris Lattner
4e2288b9de simplify this code and fix PR1493, now that llvm-gcc3 is dead. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37478 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-06 20:51:41 +00:00
Devang Patel
7d832fe6c1 Add new dominator tree node into dominator tree node map. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37475 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-06 20:08:11 +00:00
Lauro Ramos Venancio
d0499af703 Fix PR1499. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37472 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-06 17:08:48 +00:00
Owen Anderson
96dd9a8b1b Quick patch to fix the build, based on what it appears Evan meant to write. 
Evan, please check that this is in fact correct.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37471 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-06 16:22:00 +00:00
Duncan Sands
b32edb4b22 Fold the exception actions table harder: if two typeid lists start the 
same, only output one copy of the common part.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37470 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-06 15:37:31 +00:00
Nick Lewycky
51e844b601 Optimize this test. Firstly, only Instructions may use other Instructions. 
Secondly, checking whether removal succeeded tells you whether it was in
the map to begin with.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37469 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-06 11:26:20 +00:00
Evan Cheng
2c614c5c69 Mark these instructions clobbersPred. They modify the condition code register. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37468 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-06 10:17:05 +00:00
Evan Cheng
7a655479ae Lots of bug fixes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37467 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-06 10:16:17 +00:00
Evan Cheng
c1d7384cb0 Added clobbersPred. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37466 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-06 10:15:28 +00:00
Duncan Sands
9fac0b5ff2 Additional fix for PR1422: make sure the landing pad label is placed in the 
correct machine basic block - do not rely on the eh.exception intrinsic
being in the landing pad: the loop optimizers can move it out.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37463 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-06 10:05:18 +00:00
Bruno Cardoso Lopes
972f5896e4 Initial Mips support, here we go! =) 
- Modifications from the last patch included
  (issues pointed by Evan Cheng are now fixed).
- Added more MipsI instructions.
- Added more patterns to match branch instructions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37461 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-06 07:42:06 +00:00
Nick Lewycky
9d0332f7b4 Fix PR1487 and Transforms/IndVar/2007-06-06-DeleteDanglesPtr.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37459 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-06 04:12:20 +00:00
Nick Lewycky
5adcefb04d Inform ScalarEvolutions that we're deleting Values. 
This is the obviously correct part of the fix for PR1487.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37457 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-06 03:51:56 +00:00
Evan Cheng
3d6f60ec19 If a unconditional branch is added to branch to the false path during ifcvt, the predicated block cannot be iteratively ifcvted. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37456 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-06 02:08:52 +00:00
Owen Anderson
12112af5e8 Add simple full redundancy elimination. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37455 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-06 01:27:49 +00:00
Chris Lattner
b47f6124f4 Fix PR1495 and CodeGen/X86/2007-06-05-LSR-Dominator.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37454 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-06 01:23:55 +00:00
Evan Cheng
cb78d67a1a Minor statistics counting bug. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37451 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-06 01:12:44 +00:00
Evan Cheng
e705213b67 Fix a couple of typos and be smarter about order of blocks when ifcvt a diamond. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37449 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-06 00:57:55 +00:00
Devang Patel
743f7e8839 Avoid non-trivial loop unswitching while optimizing for size. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37446 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-06 00:21:03 +00:00
Chris Lattner
1405d008d8 Fix a user-reported error building with GCC 3.4.4 on Cygwin. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37445 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-05 23:49:06 +00:00
Evan Cheng
993fc9594e Fix diamond shape ifcvt bugs. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37444 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-05 23:46:14 +00:00
Owen Anderson
1d4eb6ab0d Fix a misunderstanding of the algorithm. Really, we should be tracking values 
and expression separately.  We can get around this, however, by only keeping
opaque values in TMP_GEN.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37443 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-05 23:46:12 +00:00
Owen Anderson
8f862c80bc Don't leak memory. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37442 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-05 22:11:49 +00:00
Evan Cheng
a1a9f408da ReplaceUsesOfBlockWith() can modify the predecessors list. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37441 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-05 22:03:53 +00:00
Evan Cheng
e004317c66 Do not ifcvt if either true / false path is a backedge. Not profitable in almost all cases. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37440 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-05 20:38:42 +00:00
Devang Patel
a301a16841 Fix PR 1497 
Use separate pass id for CFGOnlyPrinter.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37439 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-05 20:24:36 +00:00
Evan Cheng
5e148a37d3 Print predicate of the second instruction of the two-piece constant MI. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37437 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-05 18:55:18 +00:00
Owen Anderson
359208032b Fix a small bug, some 80 cols violations, and add some more debugging output. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37436 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-05 17:31:23 +00:00
Dan Gohman
d8af90c1da Allow insertelement, extractelement, and shufflevector to be hoisted/sunk 
by LICM.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37435 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-05 16:05:55 +00:00
Evan Cheng
341dcccb4e PIC label asm printing cosmetic changes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37434 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-05 07:36:38 +00:00
Evan Cheng
c53ef58a35 I had a senior moment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37433 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-05 07:05:25 +00:00
Zhou Sheng
febca3499e Commit first round work of PR1373. "noalias" is now fully supported in 
VMCore, BitCode, and Assembly. Documentation and test case paramattrs.ll
updated also.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37432 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-05 05:28:26 +00:00
Evan Cheng
8ed680cce3 If the predicated block requires an early exit, end the block there and add a unconditional branch to false block. AnalyzeBranch() does not understand early exits. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37430 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-05 01:31:40 +00:00
Evan Cheng
f5305f9cc7 Fix some subtle bugs: bug during succeessor copying; incorrectly updating states of ifcvted blocks. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37429 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-05 00:07:37 +00:00
Bill Wendling
851879c4cf Patches by Chuck Rose to unbreak V Studio builds. 
Thanks Chuck!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37428 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-04 23:52:59 +00:00
Dale Johannesen
fe7e397100 Tail merging wasn't working for predecessors of landing pads. PR 1496. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37427 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-04 23:52:54 +00:00
Devang Patel
170f2b9bef s/ETNode::getChildren/ETNode::getETNodeChildren/g 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37426 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-04 23:45:02 +00:00
Owen Anderson
dbc705b73f Don't use std::set_difference when the two sets are sorted differently. Compute 
the difference manually instead.

This allows GVNPRE to produce correct analysis for the example in the GVNPRE
paper.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37425 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-04 23:34:56 +00:00
Owen Anderson
082fe7185e Fix a bunch of small bugs, and improve the debugging output significantly. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37424 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-04 23:28:33 +00:00
Chris Lattner
f0a9aaba4c When rebuilding constant structs, make sure to honor the isPacked bit. 
This fixes PR1491 and GlobalOpt/2007-06-04-PackedStruct.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37423 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-04 22:23:42 +00:00
Evan Cheng
916d07cdfa Global ctors / dtors alignment shouldn't be hard-coded at 4. e.g. It could be 8 for 64-bit targets. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37421 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-04 20:39:18 +00:00
Evan Cheng
3ec425470f Forgot to check for if iterator reached the end. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37420 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-04 20:33:36 +00:00
Evan Cheng
111354ff99 Misuse of hasExternalLinkage(), should be checking isDeclaration(). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37419 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-04 18:54:57 +00:00
Owen Anderson
5ea069fdda Make phi_translate correct. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37418 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-04 18:05:26 +00:00
Devang Patel
055756bf52 Add FIXMEs. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37417 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-04 17:38:00 +00:00
Devang Patel
83beaee227 s/DominatorTree::createNewNode/DominatorTree::addNewBlock/g 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37415 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-04 16:43:25 +00:00
Devang Patel
26a6908768 Add basic block level interface to change immediate dominator 
and create new node.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37414 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-04 16:22:33 +00:00
Dan Gohman
3983358555 Pass the DAG to SDNode::dump to let it do more detailed dumps in some cases. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37413 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-04 16:17:33 +00:00
Dan Gohman
575e2f4ea8 Resolve implicit alignment before computing the FoldingSet information so 
that the CSE map always contains explicit alignment information. This allows
more loads to be CSE'd when there is a mix of explicit-alignment loads and
implicit-alignment loads.

Also, in SelectionDAG::FindModifiedNodeSlot, add the operands to the
FoldingSetNodeID before the load/store information instead of after, so
that it matches what is done elsewhere.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37411 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-04 15:49:41 +00:00
Devang Patel
69bdf68fe6 Fix LLVM build on NetBSD. Patch by Neil Booth. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37410 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-04 15:28:57 +00:00
Evan Cheng
b6665f62c5 Let IfConverter loose. Allow more aggressive subsumptions; reorder basic blocks to expose more ifcvt opportunities; code clean up and fixes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37409 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-04 06:47:22 +00:00
Evan Cheng
0370fad74b Move ReplaceUsesOfBlockWith() out of BranchFolding into a MachineBasicBlock general facility. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37408 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-04 06:44:01 +00:00
Devang Patel
26042420d6 s/llvm::DominatorTreeBase::DomTreeNode/llvm::DomTreeNode/g 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37407 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-04 00:32:22 +00:00
Owen Anderson
0fa6b37c6f Don't use the custom comparator where it's not necessary. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37406 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-03 22:02:14 +00:00
Anton Korobeynikov
fb45086027 Add comments to fallsthrough cases. Also, this fixes PR1492 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37405 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-03 19:20:49 +00:00
Anton Korobeynikov
499d8f0c3b Check arguments & return types of main(). Abort in case of no match. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37404 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-03 19:17:35 +00:00
Devang Patel
bec7647f98 s/DominatorTreeBase::Node/DominatorTreeBase:DomTreeNode/g 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37403 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-03 06:26:14 +00:00
Owen Anderson
10ac137d0b Remove an unused method. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37402 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-03 05:58:25 +00:00
Owen Anderson
a724ac1a73 There's no need to have an Expression class... Value works just as well! This simplifies a lot of code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37401 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-03 05:55:58 +00:00
Chris Lattner
c621ae7bba update this entry, now that Anton implemented shift/and lowering for 
switches.  There is one really easy isel thing here with tst we are not
getting.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37400 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-02 18:45:14 +00:00
Duncan Sands
09085fe63d The semantics of invoke require that we always jump to the unwind block 
(landing pad) when an exception unwinds through the call.  This doesn't
quite match the way the dwarf unwinder works: by default it only jumps to
the landing pad if the catch or filter specification matches, and otherwise
it keeps on unwinding.  There are two ways of specifying to the unwinder
that it should "always" (more on why there are quotes here later) jump to
the landing pad: follow the specification by a 0 typeid, or follow it by
the typeid for the NULL typeinfo.  GCC does the first, and this patch makes
LLVM do the same as gcc.  However there is a problem: the unwinder performs
optimizations based on C++ semantics (it only expects destructors to be
run if the 0 typeid fires - known as "cleanups"), meaning it assumes that no
exceptions will be raised and that the raised exception will be reraised
at the end of the cleanup code.  So if someone writes their own LLVM code
using the exception intrinsics they will get a nasty surprise if they don't
follow these rules.  The other possibility of using the typeid corresponding
to NULL (catch-all) causes the unwinder to make no assumptions, so this is
probably what we should use in the long-run.  However since we are still
having trouble getting exception handling working properly, for the moment
it seems best to closely imitate GCC.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37399 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-02 17:16:06 +00:00
Duncan Sands
73ef58ab92 Integrate exception filter support and exception catch support. This 
simplifies the code in DwarfWriter, allows for multiple filters and
makes it trivial to specify filters accompanied by cleanups or catch-all
specifications (see next patch).  What a deal!  Patch blessed by Anton.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37398 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-02 16:53:42 +00:00
Zhou Sheng
02031c0ff8 Make LowerCTPOP() support arbitrary bitwidth integer type. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37397 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-02 04:10:33 +00:00
Dale Johannesen
8e63bf375d Fix CorrectExtraCFGEdges to allow for multiple LandingPad targets. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37394 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-02 00:08:15 +00:00
Dale Johannesen
b468163869 Fancier algorithm in tail-merge comment implemented, so remove comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37393 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-01 23:04:28 +00:00
Dale Johannesen
a5a2117a46 Implement smarter algorithm for choosing which blocks to tail-merge. 
See test/CodeGen/X86/test-pic-jtbl.ll for a case where it works well;
shaves another 10K off our favorite benchmark.  I was hesitant about
this because of compile speed, but seems to do OK on a bootstrap.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37392 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-01 23:02:45 +00:00
Reid Spencer
e770787be1 For PR1486: 
Avoid overwriting the APInt instance with 0 bytes which causes the bitwidth
to be set to 0 (illegal) producing a subsequent assert.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37391 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-01 22:23:29 +00:00
Devang Patel
e7ae1a9dee Insert new instructions in AliasSet. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37390 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-01 22:15:31 +00:00
Owen Anderson
aa7d3351f0 clean() needs to process things in topological order. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37389 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-01 22:00:37 +00:00
Evan Cheng
c354334ac4 Opcode modifier s comes after condition code. e.g. addlts, not addslt. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37388 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-01 20:51:29 +00:00
Evan Cheng
b5a0690788 Correctly mark early-exit on the false path. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37387 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-01 20:29:21 +00:00
Owen Anderson
8e21fb7df8 Fix Expression comparison, which in turn fixes a value numbering error. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37386 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-01 17:34:47 +00:00
Evan Cheng
144fd1ff0f Set ARM ifcvt duplication limit to 3 for now. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37385 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-01 08:28:59 +00:00
Duncan Sands
398898cc6a Since TypeInfos are passed as i8 pointers, a NULL TypeInfo should be passed 
as a null i8 pointer not as a 0 i32.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37383 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-01 08:18:30 +00:00
Evan Cheng
8c52938e44 Ifcvt triangle: don't ifcvt 'true' BB if it has other predecessors; don't merge 'false' BB if it has other predecessors. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37382 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-01 07:41:07 +00:00
Evan Cheng
df4da14948 Make jumptable non-predicable for now. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37381 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-01 00:56:15 +00:00
Evan Cheng
fe57a7e4df Remove a bogus check. Even terminators in a ifcvt need to be predicated. Unconditional branches can usually be converted to conditional ones. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37380 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-01 00:55:26 +00:00
Evan Cheng
5f70218c75 Allow multiple ifcvt candidates to share children blocks; add some debugging code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37379 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-06-01 00:12:12 +00:00
Owen Anderson
243f348c2a Add a topological sort function. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37376 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-31 22:44:11 +00:00
Dale Johannesen
a52dd15137 Arrange for only 1 of multiple branches to landing pad to be kept. 
Do not remove empty landing pads (EH table needs to be updated)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37375 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-31 21:54:00 +00:00
Evan Cheng
f15d44cc10 Fix a typo. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37374 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-31 20:53:33 +00:00
Chris Lattner
3a4205367d Fix the asmprinter so that a globalvalue can specify an explicit alignment 
smaller than the preferred alignment, but so that the target can actually
specify a minimum alignment if needed.  This fixes some objc protocol
failures Devang tracked down.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37373 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-31 18:57:45 +00:00
Lauro Ramos Venancio
8d410b6938 Fix PR1424. 
When a function has FP, the register scavenging spill slot offset already
was calculated.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37371 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-31 18:27:58 +00:00
Owen Anderson
8214d50338 Attempt to fix up phi_translate. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37366 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-31 00:42:15 +00:00
Evan Cheng
8258210ed4 Change traversal order to bottom up in preparation for more aggressive if-conversion. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37365 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-30 19:49:19 +00:00
Chris Lattner
4e7e6cd13a Fix CodeGen/PowerPC/2007-05-30-dagcombine-miscomp.ll, and PR1473. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37362 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-30 16:30:06 +00:00
Devang Patel
f38ac5dd39 Fix typo. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37360 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-30 15:29:37 +00:00
Chris Lattner
39a1c04323 Fix Transforms/ScalarRepl/2007-05-29-MemcpyPreserve.ll and the second 
half of PR1421, by not decimating structs with holes that are the source and
destination of a memcpy.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37358 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-30 06:11:23 +00:00
Dale Johannesen
44008c5918 Changed per review comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37355 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-30 00:32:01 +00:00
Dale Johannesen
95ef406e0f Make stable_sort in tail merging actually be stable (it never was, but didn't 
matter until my last change).  Reenable tail merging by default.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37354 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-29 23:47:50 +00:00
Evan Cheng
58fbb9f5ba Don't merge in tail block of a diamond if it has more than one predecessors after if-conversion. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37353 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-29 23:37:20 +00:00
Evan Cheng
c6f2f6fbb9 For VFP2 fldm, fstm instructions, the condition code is printed after the address mode and size specifier. e.g. fstmiaseq, not fstmeqias. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37351 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-29 23:34:19 +00:00
Owen Anderson
2c0c51593d Fix a typo 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37350 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-29 23:34:14 +00:00
Evan Cheng
fd488edb1d For ldrb, strh, etc., the condition code is before the width specifier. e.g. streqh, not strheq. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37349 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-29 23:32:06 +00:00
Owen Anderson
e3072b292f Re-fix a bug, where I was now being too aggressive. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37348 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-29 23:26:30 +00:00
Owen Anderson
cdf8efde6a Use proper debugging facilities so other people don't have to look at my commented-out 
debugging lines.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37347 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-29 23:15:21 +00:00
Owen Anderson
9b6bd12ef0 Comment debug code out that I accidentally uncommented last time. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37346 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-29 22:43:03 +00:00
Owen Anderson
b502bdb604 Add a place where I missed using the maximal set. Note that using the maximal 
set this way is _SLOW_.  Somewhere down the line, I'll look at speeding it up.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37345 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-29 22:35:41 +00:00
Evan Cheng
c8ed9badfa If there is an empty block between a source and its successor block, it still requires a unconditional branch. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37344 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-29 22:31:16 +00:00
Owen Anderson
ea12a06a81 Very first part of a GVN-PRE implementation. It currently performs a bunch of analysis, and nothing more. It is also quite slow for the moment. However, 
it should give a sense of what's going on.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37343 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-29 21:53:49 +00:00
Evan Cheng
62ccdbf0b3 Add missing const qualifiers. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37342 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-29 18:42:18 +00:00
Evan Cheng
f277ee4be7 Add missing const qualifiers. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37341 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-29 18:35:22 +00:00
Nicolas Geoffray
2fb813d70b Implementation of compilation callback in PPC ELF32 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37340 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-29 16:33:18 +00:00
Zhou Sheng
924361aef9 Correct the logic in LowerPartSet which cleared the bits from 0 to low-1. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37331 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-26 03:43:13 +00:00
Chris Lattner
3adf951364 tighten up recursion depth again 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37330 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-25 02:19:06 +00:00
Evan Cheng
4bec8ae694 Silly boog. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37328 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-25 00:59:01 +00:00
Chris Lattner
7139406707 Fix PR1446 by not scalarrepl'ing giant structures. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37326 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-24 18:43:04 +00:00
Dale Johannesen
035fdeb370 Blocks that cond-br and uncond-br/fallthrough to same block should have 
only one successor.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37324 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-24 18:31:55 +00:00
Dale Johannesen
de0963df42 Fix for PR1444: do not create two successors to the same block. 
Temporarily, this breaks CodeGen/Generic/2006-02-12-InsertLibraryCall.ll
by exposing an unrelated latent problem; working on that.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37323 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-24 17:39:32 +00:00
Zhou Sheng
849c5b4537 Compute the correct word number. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37322 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-24 15:03:18 +00:00
Dan Gohman
fa73ea2d9f Minor comment cleanups. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37321 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-24 14:36:04 +00:00
Dan Gohman
237898ac1f Add explicit qualification for namespace MVT members. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37320 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-24 14:33:05 +00:00
Dan Gohman
d520559d58 Add cases for v2f32. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37319 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-24 14:29:12 +00:00
Evan Cheng
c843abe868 Fix a typo that caused combiner to create mal-formed pre-indexed store where value store is the same as the base pointer. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37318 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-24 02:35:39 +00:00
Dale Johannesen
7aea832034 Two tail merging improvements: 
When considering blocks with more than 2 predecessors, merge the block with
the largest number of matching insns, rather than the first block found.
Considering that 1 matching insn is enough to show a win for candidates that
already end with a branch.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37315 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-23 21:07:20 +00:00
Devang Patel
79b48b8bc0 Add dump() routines for debugging assistance. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37314 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-23 19:55:36 +00:00
Anton Korobeynikov
070280e97f Mark all calls as "could throw", when exceptions are enabled. Emit necessary LP info too. This fixes PR1439 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37311 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-23 11:08:31 +00:00
Chris Lattner
501fee71e0 prevent exponential recursion in isNegatibleForFree 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37310 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-23 07:35:22 +00:00
Evan Cheng
a13aa95bc8 Preliminary iterative if-conversion support. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37309 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-23 07:23:16 +00:00
Evan Cheng
69d555611a Hooks for predication support. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37308 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-23 07:22:05 +00:00
Evan Cheng
d90733035d Rename a parameter. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37307 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-23 07:21:11 +00:00
Chris Lattner
f711fb7af8 when merging two alias sets together, be sure to propagate the volatility of 
the inner set.  This fixes PR1435 and Transforms/LICM/2007-05-22-VolatileSink.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37305 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-23 06:36:35 +00:00
Devang Patel
b3b87708eb If user wants to run instcombine twice, do not block it. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37301 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-23 05:08:52 +00:00
Chris Lattner
2b7e0ade62 fix a miscompilation when passing a float through varargs 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37297 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-23 01:17:04 +00:00
Reid Spencer
4ad513ca15 Reinstate the patch for escaping non-printing characters and allow for 
\\ to escape \. All these cases are now handled by the AsmParser.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37295 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-22 19:27:35 +00:00
Reid Spencer
e2aa96140e Regenerate. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37294 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-22 19:08:16 +00:00
Reid Spencer
8ecdbf2d5f Don't allow the UnEscape code to read or write beyond the end of yytext. 
Make sure we convert \\ into \.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37293 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-22 19:07:45 +00:00
Reid Spencer
0a8a16b727 Regenerate. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37292 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-22 18:52:55 +00:00
Reid Spencer
6ecdcc1c03 Implement full unescaping of escaped hex characters in all quoted identifiers 
and strings.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37291 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-22 18:52:21 +00:00
Dale Johannesen
e6e435498c name change requested by review of previous patch 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37289 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-22 18:31:04 +00:00
Owen Anderson
2b77d3b091 Silence a warning. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37288 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-22 18:13:40 +00:00
Dale Johannesen
81da02b553 Make tail merging the default, except on powerPC. There was no prior art 
for a target-dependent default with a command-line override; this way
should be generally usable.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37285 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-22 17:14:46 +00:00
Chris Lattner
9621921acb temporarily revert reid's asmwriter patch, it is missing the asmparser piece 
that decodes the escape sequences, thus breaking all cases that use them.

This fixes test/Assembler/2007-05-21-Escape.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37284 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-22 07:00:50 +00:00
Chris Lattner
d3bd070540 update comment 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37282 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-22 06:56:32 +00:00
Chris Lattner
8e00832ae1 regenerate 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37281 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-22 06:47:55 +00:00
Chris Lattner
86fd6304ac simplify code 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37280 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-22 06:47:11 +00:00
Bill Wendling
cd6cea0823 We only need to specify the most-implied feature for an architecture. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37275 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-22 05:15:37 +00:00
Evan Cheng
94679e66bb Fix some -march=thumb regressions. tBR_JTr is not predicable. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37272 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-21 23:17:32 +00:00
Dale Johannesen
f23b8cf239 Use AXI3 not AXI2 for appropriate PIC PC-relative loads and stores. Cosmetic. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37271 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-21 22:42:04 +00:00
Evan Cheng
a6b4f43eaa If-convert early exit blocks (returns, etc.); bug fixes, etc. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37270 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-21 22:22:58 +00:00
Dale Johannesen
86d4069666 Add some patterns for PIC PC-relative loads and stores. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37269 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-21 22:14:33 +00:00
Evan Cheng
5a18ebc70c BlockHasNoFallThrough() now returns true if block ends with a return instruction; AnalyzeBranch() should ignore predicated instructionsd. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37268 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-21 18:56:31 +00:00
Duncan Sands
7bf7a446a5 Only emit one entry in the exception action table for each action, even if 
it occurs for multiple landing pads.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37267 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-21 18:50:28 +00:00
Evan Cheng
126f17a176 BlockHasNoFallThrough() now returns true if block ends with a return instruction. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37266 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-21 18:44:17 +00:00
Reid Spencer
a24f6dfc90 Get the order of the hext digits right! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37261 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-19 14:44:42 +00:00
Reid Spencer
922d0bcf8b Adjust how LLVM names are produced: 
1. Always use % for local and @ for global.
2. Replace NameNeedsQuotes with QuoteNameIfNeeded so that any adjustments
   to the name can be done in one pass.
3. Implement generation of hex escapes so we don't get "wonky" characters
   in the output.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37260 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-19 07:25:21 +00:00
Reid Spencer
ed951ea4ec Regenerate 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37258 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-19 07:22:10 +00:00
Reid Spencer
aa7c2f8c03 Make the %"..." syntax legal for local name. This just makes it symmetric 
with global names which can already be @"..."


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37257 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-19 07:21:26 +00:00
Chris Lattner
a2b18de4ba Fix Transforms/InstCombine/2007-05-18-CastFoldBug.ll, a bug that devastates 
objc code due to the way the FE lowers objc message sends.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37256 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-19 06:51:32 +00:00
Reid Spencer
cc442cabf6 On Linux platforms and at optimization levels -O1 and above, llvm-gcc can 
turn "putchar" calls into _IO_putc calls which is a lower-level interface.
This patch allows these calls to be executed by lli in interpreter mode.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37254 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-19 01:36:17 +00:00
Chris Lattner
fb3e1190fc Handle negative strides much more optimally. This compiles X86/lsr-negative-stride.ll 
into:

_t:
        movl 8(%esp), %ecx
        movl 4(%esp), %eax
        cmpl %ecx, %eax
        je LBB1_3       #bb17
LBB1_1: #bb
        cmpl %ecx, %eax
        jg LBB1_4       #cond_true
LBB1_2: #cond_false
        subl %eax, %ecx
        cmpl %ecx, %eax
        jne LBB1_1      #bb
LBB1_3: #bb17
        ret
LBB1_4: #cond_true
        subl %ecx, %eax
        cmpl %ecx, %eax
        jne LBB1_1      #bb
        jmp LBB1_3      #bb17

instead of:

_t:
        subl $4, %esp
        movl %esi, (%esp)
        movl 12(%esp), %ecx
        movl 8(%esp), %eax
        cmpl %ecx, %eax
        je LBB1_4       #bb17
LBB1_1: #bb.outer
        movl %ecx, %edx
        negl %edx
LBB1_2: #bb
        cmpl %ecx, %eax
        jle LBB1_5      #cond_false
LBB1_3: #cond_true
        addl %edx, %eax
        cmpl %ecx, %eax
        jne LBB1_2      #bb
LBB1_4: #bb17
        movl (%esp), %esi
        addl $4, %esp
        ret
LBB1_5: #cond_false
        movl %ecx, %edx
        subl %eax, %edx
        movl %eax, %esi
        addl %esi, %esi
        cmpl %ecx, %esi
        je LBB1_4       #bb17
LBB1_6: #cond_false.bb.outer_crit_edge
        movl %edx, %ecx
        jmp LBB1_1      #bb.outer


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37252 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-19 01:22:21 +00:00
Chris Lattner
7667c0bac3 same patch as the previous one, but the symmetric case 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37249 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-19 00:46:51 +00:00
Chris Lattner
2ad913b342 Disable the (A == (B-A)) -> 2*A == B xform when the sub has multiple uses (in 
this case, the xform introduces an extra operation).  This compiles
PowerPC/compare-duplicate.ll into:

_test:
        subf r2, r3, r4
        cmplw cr0, r2, r3
        bne cr0, LBB1_2 ;F

instead of:

_test:
        slwi r2, r3, 1
        subf r3, r3, r4
        cmplw cr0, r4, r2
        bne cr0, LBB1_2 ;F

This is target independent of course.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37246 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-19 00:43:44 +00:00
Reid Spencer
20a4c23bcc Fix an assertion introduced by my last change to the toString method. We 
can't use getZExtValue() to extract the low order bits for each digit.
Instead, we need to access the low order word directly.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37242 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-19 00:29:55 +00:00
Dan Gohman
f5135be3fc Apply this patch: 
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20070514/049845.html


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37240 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-18 23:21:46 +00:00
Chris Lattner
60c7a136f3 add a note 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37239 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-18 20:18:14 +00:00
Evan Cheng
7f8ff8af1a Clean up. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37237 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-18 19:32:08 +00:00
Evan Cheng
36489bbbac Change to depth-first traversal. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37236 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-18 19:26:33 +00:00
Dale Johannesen
a469b69dda Document an inefficiency in tail merging. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37235 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-18 18:46:40 +00:00
Dan Gohman
fa0f77d9b7 Use MVT::FIRST_VECTOR_VALUETYPE and MVT::LAST_VECTOR_VALUETYPE. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37234 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-18 18:44:07 +00:00
Dan Gohman
fcc4dd91e5 Qualify calls to getTypeForValueType with MVT:: too. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37233 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-18 18:41:29 +00:00
Evan Cheng
cf6cc112d5 Some restructuring in preparation for most aggressive if-conversion. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37231 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-18 18:14:37 +00:00
Dan Gohman
b55757ec5f Qualify several calls to functions in the MVT namespace, for consistency. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37230 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-18 17:52:13 +00:00
Evan Cheng
6092ca1556 Watch out for blocks that end with a return. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37227 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-18 17:06:53 +00:00
Chris Lattner
b348bb8125 Fix PR1434 and test/Linker/link-archive.ll, this is a regression from 1.9. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37204 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-18 04:02:46 +00:00
Evan Cheng
47d2502072 If true / false blocks fallthrough before ifcvt, add unconditional branches to ifcvt'd block. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37200 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-18 01:55:58 +00:00
Evan Cheng
dcc50a4aee Mark calls non-predicable for now. Need to ensure it's the last instruction in the if-converted block or make sure it preserve condition code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37199 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-18 01:53:54 +00:00
Dale Johannesen
1cf08c1d6d Remove some unneeded branches. (spotted by Evan, thanks) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37198 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-18 01:28:58 +00:00
Evan Cheng
e5e7ce458a Silence some compilation warnings. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37197 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-18 01:19:57 +00:00
Evan Cheng
86cbfea33b Make use of target specific block size limits; bug fixes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37195 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-18 00:20:58 +00:00
Evan Cheng
9f8cbd147c Set ARM if-conversion block size threshold to 10 instructions for now. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37194 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-18 00:19:34 +00:00
Evan Cheng
6ae3626a4f RemoveBranch() and InsertBranch() now returns number of instructions deleted / inserted. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37193 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-18 00:18:17 +00:00
Evan Cheng
b5cdaa257e RemoveBranch() and InsertBranch() now returns number of instructions deleted / inserted. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37192 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-18 00:05:48 +00:00
Evan Cheng
4f098788d3 Move isSuccessor() offline, change it to use std::find. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37190 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-17 23:58:53 +00:00
Devang Patel
9f26f73179 Fix PR1431 
Test case at Transformations/SCCP/2007-05-16-InvokeCrash.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37185 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-17 22:10:15 +00:00
Dale Johannesen
8dd86c14d4 More effective breakdown of memcpy into repeated load/store. These are now 
in the order lod;lod;lod;sto;sto;sto which means the load-store optimizer
has a better chance of producing ldm/stm.  Ideally you would get cooperation
from the RA as well but this is not there yet.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37179 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-17 21:31:21 +00:00
Reid Spencer
fb0709a180 Get rid of leading zeros in the output of toString. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37175 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-17 19:23:02 +00:00
Evan Cheng
213d2cf94f Fix a bogus check that prevented folding VECTOR_SHUFFLE to UNDEF; add an optimization to fold VECTOR_SHUFFLE to a zero vector. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37173 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-17 18:45:50 +00:00
Evan Cheng
174f803395 Added missing patterns for UNPCKH* and PUNPCKH*. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37172 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-17 18:44:37 +00:00
Chris Lattner
3fc5b01d38 disable MaskedValueIsZero, ComputeMaskedBits, and SimplifyDemandedBits for 
i128 integers.  The 64-bit masks are not wide enough to represent the results.
These should be converted to APInt someday.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37169 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-17 18:19:23 +00:00
Chris Lattner
b429f7303e add expand support for ADDC/SUBC/ADDE/SUBE so we can codegen 128-bit add/sub on 32-bit (or less) targets 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37168 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-17 18:15:41 +00:00
Chris Lattner
07c70cd866 This is the correct fix for PR1427. This fixes mmx-shuffle.ll and doesn't 
cause other regressions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37160 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-17 17:13:13 +00:00
Anton Korobeynikov
f840202953 Revert patch for PR1427. It breaks almost all vector tests. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37159 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-17 07:50:14 +00:00
Chris Lattner
ccde4cb8ab add support for 128-bit add/sub on ppc64 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37158 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-17 06:52:46 +00:00
Reid Spencer
09d8c9278e Print integer values as both decimal and hexadecimal for convenience 
of verifying result values when debugging.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37156 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-17 06:47:54 +00:00
Chris Lattner
a066810681 add support for 128-bit integer add/sub 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37154 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-17 06:35:11 +00:00
Reid Spencer
02ae8b78ff For lshr by 0 bits, just return *this as a short cut. This also prevents 
undefined behavior when the width > 64 bits.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37153 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-17 06:26:29 +00:00
Chris Lattner
da66472ea6 Fix PR1427 and test/CodeGen/X86/mmx-shuffle.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37141 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-17 03:29:42 +00:00
Evan Cheng
d9e9efb253 Remove. Not needed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37139 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-17 00:11:35 +00:00
Evan Cheng
e425956b72 Default implementation of TargetInstrInfo::getBlockSize(). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37138 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-16 23:53:44 +00:00
Evan Cheng
d60483ef99 Add target hook to specify block size limit for if-conversion. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37134 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-16 23:45:53 +00:00
Dale Johannesen
98a6c62aff Don't fold bitconvert(load) for preinc/postdec loads. Likewise stores. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37130 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-16 22:45:30 +00:00
Evan Cheng
d6ddc308f0 isBlockPredicable() always ignore terminal instructions; add comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37126 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-16 21:54:37 +00:00
Evan Cheng
3f8602cf20 ARM::tB is also predicable. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37125 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-16 21:53:43 +00:00
Evan Cheng
02c602b333 PredicateInstruction returns true if the operation was successful. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37124 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-16 21:53:07 +00:00
Evan Cheng
2eb80fa433 Add default implementation of PredicateInstruction(). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37123 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-16 21:20:37 +00:00
Evan Cheng
c3a289c4b5 Rename M_PREDICATED to M_PREDICABLE; Moved isPredicable() to MachineInstr. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37121 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-16 20:56:08 +00:00
Evan Cheng
75604f81b7 Move if-conversion after all passes that may use register scavenger. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37120 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-16 20:52:46 +00:00
Evan Cheng
b5f8eff566 Removed isPredicable(). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37119 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-16 20:50:23 +00:00
Evan Cheng
5ada199246 Make ARM::B isPredicable; Make Bcc and MOVCC condition option a normal operand so they are not predicable. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37118 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-16 20:50:01 +00:00
Evan Cheng
064d7cdd3c Added isPredicable bit to class Instruction. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37117 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-16 20:47:01 +00:00
Reid Spencer
6551dcdd8a Fix a bug in the "fromString" method where radix 2,8 and 16 values were 
not being generated correctly because the shl operator does not mutate its
object but returns a new value. Also, make the distinction between radix
16 and the others more clear.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37111 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-16 19:18:22 +00:00
Reid Spencer
52811bdbf0 Avoid a "loss of precision" error in gcc 4.1.3. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37105 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-16 16:39:29 +00:00
Duncan Sands
53c3a333a4 Output exception call-sites in address order, as required by the unwinding 
runtime.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37104 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-16 12:12:23 +00:00
Evan Cheng
aeafca0a25 Conditional branch is not a barrier. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37103 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-16 07:45:54 +00:00
Chris Lattner
c76d4410ab Use a ptr set instead of a linear search to unique TokenFactor operands. 
This fixes PR1423


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37102 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-16 06:37:59 +00:00
Chris Lattner
738a6ec0ae implement the missing maskmovq mmx intrinsic that akor hit. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37100 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-16 06:08:17 +00:00
Evan Cheng
2706f9771d Fix comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37098 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-16 05:14:06 +00:00
Evan Cheng
c5d05ef357 Devang points out that we need an assertion here. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37097 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-16 05:11:10 +00:00
Reid Spencer
951418b7e9 Implement printing of instruction result values when debug info is turned 
on. This helps to speed up the debugging time by showing computational
results as the program executes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37095 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-16 02:05:13 +00:00
Evan Cheng
93003b8cf2 Bug fix: should check ABI alignment, not pref. alignment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37094 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-16 02:04:50 +00:00
Evan Cheng
9307292ae2 Hooks for predication support. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37093 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-16 02:01:49 +00:00
Evan Cheng
4e654852f1 Initial commit of (very basic) if converter. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37092 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-16 02:00:57 +00:00
Dale Johannesen
14ba0cc429 Remove extra CFG edges before doing these passes; it makes them happier. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37089 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-15 21:19:17 +00:00
Lauro Ramos Venancio
b5bb7ffa9c Fix an infinite recursion in GetNegatedExpression. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37086 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-15 17:05:43 +00:00
Duncan Sands
49b5c27baa The index into the actions table is a ULEB128 not a SLEB128. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37084 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-15 13:54:14 +00:00
Chris Lattner
ce3e2bff8b selects can also reach here 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37081 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-15 06:42:04 +00:00
Chris Lattner
d67c632d96 implement the ModuleProvider::dematerializeFunction hook 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37080 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-15 06:29:44 +00:00
Reid Spencer
76c94b6169 Un-brain-dead-ify the lowering of part set for the reverse case. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37071 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-15 02:26:52 +00:00
Chris Lattner
c90233b836 Fix some subtle issues handling immediate values. This fixes 
test/CodeGen/ARM/2007-05-14-InlineAsmCstCrash.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37069 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-15 01:33:58 +00:00
Chris Lattner
9f5d5783ec fix some subtle inline asm selection issues 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37067 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-15 01:31:05 +00:00
Evan Cheng
44bec52b1b Add PredicateOperand to all ARM instructions that have the condition field. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37066 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-15 01:29:07 +00:00
Chris Lattner
709fd414e2 fix subtle bugs in inline asm operand selection 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37065 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-15 01:28:08 +00:00
Evan Cheng
19e3f31f6a Added getNumExplicitOperands and findFirstPredOperand. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37064 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-15 01:26:09 +00:00
Chris Lattner
6b6aef8efc Fix Transforms/InstCombine/2007-05-14-Crash.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37057 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-15 00:16:00 +00:00
Lauro Ramos Venancio
5d3d44a848 Fix previous patch. GOTOFF can be used only when the symbol has internal 
linkage or hidden visibility.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37055 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-14 23:20:21 +00:00
Chris Lattner
2944652569 implement a simple fneg optimization/propagation thing. This compiles: 
CodeGen/PowerPC/fneg.ll into:

_t4:
        fmul f0, f3, f4
        fmadd f1, f1, f2, f0
        blr

instead of:

_t4:
        fneg f0, f3
        fmul f0, f0, f4
        fmsub f1, f1, f2, f0
        blr


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37054 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-14 22:04:50 +00:00
Evan Cheng
8dfffd5a07 Only worry about intervening kill if there are more than one live ranges in the interval. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37052 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-14 21:23:51 +00:00
Evan Cheng
2f6cb2b14c Fix for PR1406: 
v1 =
r2 = move v1
   = op r2<kill>
...
r2 = move v1
   = op r2<kill>

Clear the first r2 kill if v1 and r2 are joined.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37050 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-14 21:10:05 +00:00
Evan Cheng
8b966d9fd0 When marking a register as being implicitly defined, make sure to clear its partial use info as well. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37046 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-14 20:39:18 +00:00
Lauro Ramos Venancio
930d161ba2 Optimize PIC implementation. GOTOFF can be used when the symbol is defined 
and used in the same module.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37044 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-14 18:46:23 +00:00
Lauro Ramos Venancio
69642f11ed Enable aliases on arm-linux. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37042 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-14 18:32:56 +00:00
Reid Spencer
9bd57b6561 Give names to the final result values of the part_set computations. This 
just aids in readability and debugability of the output. No functional change.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37037 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-14 17:21:17 +00:00
Dan Gohman
d9efdb2012 Correct a few comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37034 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-14 14:31:17 +00:00
Dan Gohman
a196b993e0 Add passes -view-cfg and -view-cfg-only that are like -print-cfg and 
-print-cfg-only except they use the ViewCFG function, which displays the
CFG rendered with graphviz with gv.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37033 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-14 14:25:08 +00:00
Reid Spencer
69944e85aa Make the results for the rotate functions correct when rotateAmt == 0. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37026 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-14 00:15:28 +00:00
Reid Spencer
19dc32a2d4 Add some things needed by the llvm-gcc version supporting bit accurate integer 
types:
1. Functions to compute div/rem at the same time.
2. Further assurance that an APInt with 0 bitwidth cannot be constructed.
3. Left and right rotate operations.
4. An exactLogBase2 function which requires an exact power of two or it
   returns -1.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37025 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-13 23:44:59 +00:00
Chris Lattner
40c1b66d88 Fix PR1413 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37023 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-13 22:19:27 +00:00
Chris Lattner
79cfddf646 Fix Transforms/GlobalOpt/2007-05-13-Crash.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37020 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-13 21:28:07 +00:00
Anton Korobeynikov
185bc8905a Emit function debug frames in one atom. This will prevent us from generating incorrect assembler in case of both 
debug information & exception information presented.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37019 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-13 17:30:11 +00:00
Anton Korobeynikov
8c7c17354c Emit multiple common EH frames for multiple (including blank) personality 
functions. This partly fixes PR1414: now we're restricted only to one
personality function per eh frame, not per module. Further work on
"multiple personalities" topic needs representative example.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37018 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-13 15:42:26 +00:00
Anton Korobeynikov
0ff3ca4f92 More DWARF-related things cleanup: 
1. Fix PR1380
2. Apply Duncan's patch from PR1410
3. Insert workaround for "one personality function per module" as noted in PR1414
4. Emit correct debug frames for x86/linux. This partly fixes DebugInfo/2006-11-06-StackTrace.cpp: stack trace is
shown correctly, but arguments for function on top of stack are displayed incorrectly.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37015 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-12 22:36:25 +00:00
Reid Spencer
92c7283500 Fix shl to produce the correct result when the bitwidth is > 64 and the 
shift amount is 0. Previously this code would do a lshr by the bit width
which can lead to incorrect results.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37010 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-12 18:01:57 +00:00
Reid Spencer
5156f5b214 Get the size of auto arrays right, regardless of its changing size. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37006 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-12 11:07:40 +00:00
Chris Lattner
384003d2c0 allow partially materialized modules to be written out, which just strips out 
the functions which haven't been read.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36999 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-11 23:51:59 +00:00