Devang Patel [Thu, 7 Jun 2007 18:45:06 +0000 (18:45 +0000)]
Use DominatorTree instead of ETForest.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37495
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Devang Patel [Thu, 7 Jun 2007 18:40:55 +0000 (18:40 +0000)]
Use DominatorTree instead of ETForest.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37494
91177308-0d34-0410-b5e6-
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Devang Patel [Thu, 7 Jun 2007 18:39:40 +0000 (18:39 +0000)]
Add BasicBlock level dominates(A,B) interface.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37493
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Devang Patel [Thu, 7 Jun 2007 17:47:21 +0000 (17:47 +0000)]
Maintain ETNode as part of DomTreeNode.
This adds redundancy for now.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37492
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Tanya Lattner [Thu, 7 Jun 2007 17:12:16 +0000 (17:12 +0000)]
Formating fixes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37491
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Tanya Lattner [Thu, 7 Jun 2007 16:44:52 +0000 (16:44 +0000)]
Correct typo. Should be "not allowed"
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37490
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Duncan Sands [Thu, 7 Jun 2007 09:35:33 +0000 (09:35 +0000)]
Make the struct bigger, in an attempt to get a "struct return" on more
platforms.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37489
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Duncan Sands [Thu, 7 Jun 2007 09:00:48 +0000 (09:00 +0000)]
Make this test pass if llvm-g++ was built without exception handling support.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37488
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Evan Cheng [Thu, 7 Jun 2007 08:13:00 +0000 (08:13 +0000)]
ifcvt a triangle: don't merge ifcvt block with rejoin block if it can fall through to it. If merged, the resulting block is not a candidate for iterative ifcvting since it contains both predicated and non-predicated code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37487
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Zhou Sheng [Thu, 7 Jun 2007 06:12:03 +0000 (06:12 +0000)]
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
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Evan Cheng [Thu, 7 Jun 2007 02:12:15 +0000 (02:12 +0000)]
Lots of bug fixes. Now finally in a reasonable state.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37485
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Evan Cheng [Thu, 7 Jun 2007 01:37:54 +0000 (01:37 +0000)]
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
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Lauro Ramos Venancio [Wed, 6 Jun 2007 23:10:56 +0000 (23:10 +0000)]
Fix bugpoint to run -llc-safe with -Xlinker.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37483
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Lauro Ramos Venancio [Wed, 6 Jun 2007 22:01:12 +0000 (22:01 +0000)]
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
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Tanya Lattner [Wed, 6 Jun 2007 21:59:26 +0000 (21:59 +0000)]
Instruct the inliner to obey the noinline attribute. Add test case.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37481
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Tanya Lattner [Wed, 6 Jun 2007 21:00:46 +0000 (21:00 +0000)]
Really use attribute.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37480
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Tanya Lattner [Wed, 6 Jun 2007 20:52:16 +0000 (20:52 +0000)]
Test case for noinline attribute.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37479
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Chris Lattner [Wed, 6 Jun 2007 20:51:41 +0000 (20:51 +0000)]
simplify this code and fix PR1493, now that llvm-gcc3 is dead.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37478
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Chris Lattner [Wed, 6 Jun 2007 20:51:14 +0000 (20:51 +0000)]
if internalize is disabled, don't run the pass at all!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37477
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Tanya Lattner [Wed, 6 Jun 2007 20:46:40 +0000 (20:46 +0000)]
Revert changes for noinline.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37476
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Devang Patel [Wed, 6 Jun 2007 20:08:11 +0000 (20:08 +0000)]
Add new dominator tree node into dominator tree node map.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37475
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Chris Lattner [Wed, 6 Jun 2007 18:28:13 +0000 (18:28 +0000)]
update to match latest changes
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37474
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Lauro Ramos Venancio [Wed, 6 Jun 2007 17:10:02 +0000 (17:10 +0000)]
Add a test for PR1499.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37473
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Lauro Ramos Venancio [Wed, 6 Jun 2007 17:08:48 +0000 (17:08 +0000)]
Fix PR1499.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37472
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Owen Anderson [Wed, 6 Jun 2007 16:22:00 +0000 (16:22 +0000)]
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
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Duncan Sands [Wed, 6 Jun 2007 15:37:31 +0000 (15:37 +0000)]
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
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Nick Lewycky [Wed, 6 Jun 2007 11:26:20 +0000 (11:26 +0000)]
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
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Evan Cheng [Wed, 6 Jun 2007 10:17:05 +0000 (10:17 +0000)]
Mark these instructions clobbersPred. They modify the condition code register.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37468
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Evan Cheng [Wed, 6 Jun 2007 10:16:17 +0000 (10:16 +0000)]
Lots of bug fixes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37467
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Evan Cheng [Wed, 6 Jun 2007 10:15:28 +0000 (10:15 +0000)]
Added clobbersPred.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37466
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Evan Cheng [Wed, 6 Jun 2007 10:14:55 +0000 (10:14 +0000)]
Add clobbersPred - instruction that clobbers condition code / register which are used to predicate instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37465
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Evan Cheng [Wed, 6 Jun 2007 10:13:55 +0000 (10:13 +0000)]
Add a machine instruction flag indicating the instruction can clobber condition code / register(s) used to predicate instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37464
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Duncan Sands [Wed, 6 Jun 2007 10:05:18 +0000 (10:05 +0000)]
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
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Duncan Sands [Wed, 6 Jun 2007 09:59:53 +0000 (09:59 +0000)]
"Simplified" testcase for PR1422.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37462
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Bruno Cardoso Lopes [Wed, 6 Jun 2007 07:42:06 +0000 (07:42 +0000)]
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
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Tanya Lattner [Wed, 6 Jun 2007 05:53:50 +0000 (05:53 +0000)]
Ignore llvm.noinline
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37460
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Nick Lewycky [Wed, 6 Jun 2007 04:12:20 +0000 (04:12 +0000)]
Fix PR1487 and Transforms/IndVar/2007-06-06-DeleteDanglesPtr.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37459
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Nick Lewycky [Wed, 6 Jun 2007 04:11:21 +0000 (04:11 +0000)]
new testcase for PR1487
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37458
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Nick Lewycky [Wed, 6 Jun 2007 03:51:56 +0000 (03:51 +0000)]
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
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Evan Cheng [Wed, 6 Jun 2007 02:08:52 +0000 (02:08 +0000)]
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
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Owen Anderson [Wed, 6 Jun 2007 01:27:49 +0000 (01:27 +0000)]
Add simple full redundancy elimination.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37455
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Chris Lattner [Wed, 6 Jun 2007 01:23:55 +0000 (01:23 +0000)]
Fix PR1495 and CodeGen/X86/2007-06-05-LSR-Dominator.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37454
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Chris Lattner [Wed, 6 Jun 2007 01:22:09 +0000 (01:22 +0000)]
add accessor
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37453
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Chris Lattner [Wed, 6 Jun 2007 01:21:46 +0000 (01:21 +0000)]
new testcase for PR1495
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37452
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Evan Cheng [Wed, 6 Jun 2007 01:12:44 +0000 (01:12 +0000)]
Minor statistics counting bug.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37451
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Devang Patel [Wed, 6 Jun 2007 00:59:48 +0000 (00:59 +0000)]
Break friendship.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37450
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Evan Cheng [Wed, 6 Jun 2007 00:57:55 +0000 (00:57 +0000)]
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
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Devang Patel [Wed, 6 Jun 2007 00:49:02 +0000 (00:49 +0000)]
Rename.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37448
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Devang Patel [Wed, 6 Jun 2007 00:46:36 +0000 (00:46 +0000)]
Simplify class hierarchy.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37447
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Devang Patel [Wed, 6 Jun 2007 00:21:03 +0000 (00:21 +0000)]
Avoid non-trivial loop unswitching while optimizing for size.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37446
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Chris Lattner [Tue, 5 Jun 2007 23:49:06 +0000 (23:49 +0000)]
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
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Evan Cheng [Tue, 5 Jun 2007 23:46:14 +0000 (23:46 +0000)]
Fix diamond shape ifcvt bugs.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37444
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Owen Anderson [Tue, 5 Jun 2007 23:46:12 +0000 (23:46 +0000)]
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
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Owen Anderson [Tue, 5 Jun 2007 22:11:49 +0000 (22:11 +0000)]
Don't leak memory.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37442
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Evan Cheng [Tue, 5 Jun 2007 22:03:53 +0000 (22:03 +0000)]
ReplaceUsesOfBlockWith() can modify the predecessors list.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37441
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Evan Cheng [Tue, 5 Jun 2007 20:38:42 +0000 (20:38 +0000)]
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
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Devang Patel [Tue, 5 Jun 2007 20:24:36 +0000 (20:24 +0000)]
Fix PR 1497
Use separate pass id for CFGOnlyPrinter.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37439
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Devang Patel [Tue, 5 Jun 2007 20:23:20 +0000 (20:23 +0000)]
New test.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37438
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Evan Cheng [Tue, 5 Jun 2007 18:55:18 +0000 (18:55 +0000)]
Print predicate of the second instruction of the two-piece constant MI.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37437
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Owen Anderson [Tue, 5 Jun 2007 17:31:23 +0000 (17:31 +0000)]
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
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Dan Gohman [Tue, 5 Jun 2007 16:05:55 +0000 (16:05 +0000)]
Allow insertelement, extractelement, and shufflevector to be hoisted/sunk
by LICM.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37435
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Evan Cheng [Tue, 5 Jun 2007 07:36:38 +0000 (07:36 +0000)]
PIC label asm printing cosmetic changes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37434
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Evan Cheng [Tue, 5 Jun 2007 07:05:25 +0000 (07:05 +0000)]
I had a senior moment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37433
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Zhou Sheng [Tue, 5 Jun 2007 05:28:26 +0000 (05:28 +0000)]
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
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Evan Cheng [Tue, 5 Jun 2007 01:45:08 +0000 (01:45 +0000)]
New test.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37431
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Evan Cheng [Tue, 5 Jun 2007 01:31:40 +0000 (01:31 +0000)]
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
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Evan Cheng [Tue, 5 Jun 2007 00:07:37 +0000 (00:07 +0000)]
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
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Bill Wendling [Mon, 4 Jun 2007 23:52:59 +0000 (23:52 +0000)]
Patches by Chuck Rose to unbreak V Studio builds.
Thanks Chuck!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37428
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Dale Johannesen [Mon, 4 Jun 2007 23:52:54 +0000 (23:52 +0000)]
Tail merging wasn't working for predecessors of landing pads. PR 1496.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37427
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Devang Patel [Mon, 4 Jun 2007 23:45:02 +0000 (23:45 +0000)]
s/ETNode::getChildren/ETNode::getETNodeChildren/g
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37426
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Owen Anderson [Mon, 4 Jun 2007 23:34:56 +0000 (23:34 +0000)]
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
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Owen Anderson [Mon, 4 Jun 2007 23:28:33 +0000 (23:28 +0000)]
Fix a bunch of small bugs, and improve the debugging output significantly.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37424
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Chris Lattner [Mon, 4 Jun 2007 22:23:42 +0000 (22:23 +0000)]
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
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Chris Lattner [Mon, 4 Jun 2007 22:23:17 +0000 (22:23 +0000)]
new testcase for PR1491
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37422
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Evan Cheng [Mon, 4 Jun 2007 20:39:18 +0000 (20:39 +0000)]
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
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Evan Cheng [Mon, 4 Jun 2007 20:33:36 +0000 (20:33 +0000)]
Forgot to check for if iterator reached the end.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37420
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Evan Cheng [Mon, 4 Jun 2007 18:54:57 +0000 (18:54 +0000)]
Misuse of hasExternalLinkage(), should be checking isDeclaration().
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37419
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Owen Anderson [Mon, 4 Jun 2007 18:05:26 +0000 (18:05 +0000)]
Make phi_translate correct.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37418
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Devang Patel [Mon, 4 Jun 2007 17:38:00 +0000 (17:38 +0000)]
Add FIXMEs.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37417
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Devang Patel [Mon, 4 Jun 2007 16:49:36 +0000 (16:49 +0000)]
Remove unused method.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37416
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Devang Patel [Mon, 4 Jun 2007 16:43:25 +0000 (16:43 +0000)]
s/DominatorTree::createNewNode/DominatorTree::addNewBlock/g
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37415
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Devang Patel [Mon, 4 Jun 2007 16:22:33 +0000 (16:22 +0000)]
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
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Dan Gohman [Mon, 4 Jun 2007 16:17:33 +0000 (16:17 +0000)]
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
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Dan Gohman [Mon, 4 Jun 2007 16:11:03 +0000 (16:11 +0000)]
Remove the operator<< for MVT::ValueType in preparation for MVT::ValueType
being changed from an enum to an integer type, which can't have a custom
operator<< overload.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37412
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Dan Gohman [Mon, 4 Jun 2007 15:49:41 +0000 (15:49 +0000)]
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
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Devang Patel [Mon, 4 Jun 2007 15:28:57 +0000 (15:28 +0000)]
Fix LLVM build on NetBSD. Patch by Neil Booth.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37410
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Evan Cheng [Mon, 4 Jun 2007 06:47:22 +0000 (06:47 +0000)]
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
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Evan Cheng [Mon, 4 Jun 2007 06:44:01 +0000 (06:44 +0000)]
Move ReplaceUsesOfBlockWith() out of BranchFolding into a MachineBasicBlock general facility.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37408
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Devang Patel [Mon, 4 Jun 2007 00:32:22 +0000 (00:32 +0000)]
s/llvm::DominatorTreeBase::DomTreeNode/llvm::DomTreeNode/g
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37407
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Owen Anderson [Sun, 3 Jun 2007 22:02:14 +0000 (22:02 +0000)]
Don't use the custom comparator where it's not necessary.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37406
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Anton Korobeynikov [Sun, 3 Jun 2007 19:20:49 +0000 (19:20 +0000)]
Add comments to fallsthrough cases. Also, this fixes PR1492
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37405
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Anton Korobeynikov [Sun, 3 Jun 2007 19:17:35 +0000 (19:17 +0000)]
Check arguments & return types of main(). Abort in case of no match.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37404
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Devang Patel [Sun, 3 Jun 2007 06:26:14 +0000 (06:26 +0000)]
s/DominatorTreeBase::Node/DominatorTreeBase:DomTreeNode/g
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37403
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Owen Anderson [Sun, 3 Jun 2007 05:58:25 +0000 (05:58 +0000)]
Remove an unused method.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37402
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Owen Anderson [Sun, 3 Jun 2007 05:55:58 +0000 (05:55 +0000)]
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
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Chris Lattner [Sat, 2 Jun 2007 18:45:14 +0000 (18:45 +0000)]
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
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Duncan Sands [Sat, 2 Jun 2007 17:16:06 +0000 (17:16 +0000)]
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
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Duncan Sands [Sat, 2 Jun 2007 16:53:42 +0000 (16:53 +0000)]
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
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Zhou Sheng [Sat, 2 Jun 2007 04:10:33 +0000 (04:10 +0000)]
Make LowerCTPOP() support arbitrary bitwidth integer type.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37397
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Dale Johannesen [Sat, 2 Jun 2007 00:08:15 +0000 (00:08 +0000)]
Fix CorrectExtraCFGEdges to allow for multiple LandingPad targets.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37394
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