Bob Wilson 84bd6b0c31 Re-commit my previous SSAUpdater changes. The previous version naively tried ... to determine where to place PHIs by iteratively comparing reaching definitions at each block. That was just plain wrong. This version now computes the dominator tree within the subset of the CFG where PHIs may need to be placed, and then places the PHIs in the iterated dominance frontier of each definition. The rest of the patch is mostly the same, with a few more performance improvements added in. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101612 91177308-0d34-0410-b5e6-96231b3b80d8		2010-04-17 03:08:24 +00:00
..
ABCD	Revert my previous patch to ABCD and fix things the right way. There are two problems addressed	2009-11-09 00:44:44 +00:00
ADCE	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00
ArgumentPromotion	Make opt default to not adding a target data string and update tests that depend on target data to supply it within the test	2009-11-03 15:29:06 +00:00
BlockPlacement	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00
BranchFolding	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00
CodeExtractor	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00
CodeGenPrepare	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00
ConstantMerge	1. modernize the constantmerge pass, using densemap/smallvector.	2010-02-12 18:17:23 +00:00
ConstProp	fix PR6197 - infinite recursion in ipsccp due to block addresses	2010-02-01 19:35:08 +00:00
DeadArgElim	Revert r101213.	2010-04-14 04:51:58 +00:00
DeadStoreElimination	add newlines at the end of files.	2010-04-07 22:53:17 +00:00
FunctionAttrs	Fix a README item: have functionattrs look through selects and	2010-01-06 15:37:47 +00:00
GlobalDCE	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00
GlobalOpt	Trim tests and convert to FileCheck.	2010-04-14 20:22:17 +00:00
GVN	Re-commit my previous SSAUpdater changes. The previous version naively tried	2010-04-17 03:08:24 +00:00
IndVarSimplify	Teach ScalarEvolution to simplify smax and umax when it can prove	2010-04-13 16:51:03 +00:00
Inline	Disable inlining of recursive calls. It can complicate tailcallelim and	2010-04-16 16:01:18 +00:00
InstCombine	Verify function prototypes before trying to optimize functions. We also	2010-04-12 04:48:00 +00:00
Internalize	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00
IPConstantProp	Delete useless trailing semicolons.	2010-01-05 17:55:26 +00:00
JumpThreading	fix PR6743, a case where we'd delete an instruction before using it	2010-04-10 18:26:57 +00:00
LCSSA	Make isLCSSA ignore uses in blocks not reachable from the entry block,	2010-03-09 01:53:33 +00:00
LICM	Remove dead debug info intrinsics.	2010-01-05 01:10:40 +00:00
LoopDeletion	Make LoopSimplify change conditional branches in loop exiting blocks	2010-02-25 06:57:05 +00:00
LoopIndexSplit	add newlines at the end of files.	2010-04-07 22:53:17 +00:00
LoopRotate	Delete useless trailing semicolons.	2010-01-05 17:55:26 +00:00
LoopSimplify	Make Loop::getLoopLatch() work on loops which don't have preheaders, as	2009-11-20 20:51:18 +00:00
LoopStrengthReduce	When determining a canonical insert position, don't climb deeper	2010-04-09 22:07:05 +00:00
LoopUnroll	Teach getSmallConstantTripMultiple about Shl operators.	2009-11-20 01:09:34 +00:00
LoopUnswitch	fix a crash in loop unswitch on a loop invariant vector condition.	2010-02-02 02:26:54 +00:00
LowerInvoke	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00
LowerSetJmp	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00
LowerSwitch	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00
Mem2Reg	When converting dbg.declare to dbg.value, attach promoted store's debug metadata to dbg.value	2010-01-27 00:44:36 +00:00
MemCpyOpt	Reapply address space patch after fixing an issue in MemCopyOptimizer.	2010-04-04 03:10:48 +00:00
MergeFunc	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00
PruneEH	Delete useless trailing semicolons.	2010-01-05 17:55:26 +00:00
Reassociate	fix a nice subtle reassociate bug which would only occur	2010-03-05 07:18:54 +00:00
ScalarRepl	move comment.	2010-04-16 01:05:52 +00:00
SCCP	fix a SCCP miscompilation that could happen when a	2010-04-09 01:14:31 +00:00
SimplifyCFG	testcase for r99914, provided by baldrick!	2010-03-31 20:37:13 +00:00
SimplifyLibCalls	Reapply address space patch after fixing an issue in MemCopyOptimizer.	2010-04-04 03:10:48 +00:00
SRETPromotion	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00
SSI	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00
StripSymbols	Update test.	2009-09-09 02:41:50 +00:00
TailCallElim	Refine the detection of seemingly infinitely recursive calls where the	2010-04-16 15:57:50 +00:00
TailDup	Change tests from "opt %s" to "opt < %s" so that opt doesn't see the	2009-09-11 18:01:28 +00:00