Chris Lattner 05cd886561 Transform any logical shift of a power of two into an exact/NUW shift when ...

in a known-non-zero context.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131887 91177308-0d34-0410-b5e6-96231b3b80d8

2011-05-23 00:21:50 +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

fix PR8932, a case where arg promotion could infinitely promote.

2011-01-16 08:09:24 +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

Roll r127459 back in:

2011-03-11 21:52:04 +00:00

ConstantMerge

Don't merge two constants if we care about the address of both.

2011-01-16 17:05:09 +00:00

ConstProp

implement PR9315, constant folding exp2 in terms of pow (since hosts without

2011-05-22 22:22:35 +00:00

CorrelatedValuePropagation

Test for lazy value info's ability to prove the absense of NULLs in pointers.

2011-01-16 21:57:20 +00:00

DeadArgElim

Fix grammar in test.

2011-05-22 01:16:00 +00:00

DeadStoreElimination

* The DSE code that tested for overlapping needed to take into account the fact

2011-03-30 21:37:19 +00:00

EarlyCSE

Duncan deftly points out that readnone functions aren't

2011-01-03 23:38:13 +00:00

FunctionAttrs

Make ModRefBehavior a lattice. Use this to clean up AliasAnalysis

2010-11-10 01:02:18 +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

fix PR9856, an incorrectly conservative assertion: a global can be

2011-05-22 07:15:13 +00:00

GVN

fix PR9841 by having GVN not process dead loads. This was

2011-05-22 07:03:34 +00:00

IndVarSimplify

Fixes PR9730: indvars: An asserting value handle still pointed to this value

2011-04-27 23:00:03 +00:00

Inline

Commit test change, forgotten as part of r131838.

2011-05-22 05:31:47 +00:00

InstCombine

Transform any logical shift of a power of two into an exact/NUW shift when

2011-05-23 00:21:50 +00:00

InstSimplify

The comparision "max(x,y)==x" is equivalent to "x>=y". Since the max is

2011-05-07 16:56:49 +00:00

Internalize

Add test for r127138.

2011-03-07 21:28:14 +00:00

IPConstantProp

more test cleanup

2010-09-02 22:38:56 +00:00

JumpThreading

Fix an infinite alternation in JumpThreading where two transforms would repeatedly undo each other. The solution is to perform more aggressive constant folding to make one of the edges just folded away rather than trying to thread it.

2011-04-14 21:35:50 +00:00

LCSSA

Do not add PHIs with no users when creating LCSSA form. Patch by Andrew Clinton.

2011-03-15 07:41:25 +00:00

LICM

PR9604; try to deal with RAUW updates correctly in the AST. I'm not convinced

2011-04-09 06:55:46 +00:00

LoopDeletion

Make LoopDeletion work on loops with multiple edges, as long as the incoming

2011-02-22 22:25:39 +00:00

LoopIdiom

Fix PR9815: I was trying to get out of "generating code and then

2011-05-22 17:39:56 +00:00

LoopRotate

fix PR9523, a crash in looprotate on a non-canonical loop made out of indirectbr.

2011-04-09 07:25:58 +00:00

LoopSimplify

Avoid creating canonical induction variables for non-native types.

2011-03-18 16:50:32 +00:00

LoopStrengthReduce

When forming an ICmpZero LSRUse, normalize the non-IV operand

2011-05-18 21:02:18 +00:00

LoopUnroll

add a testcase for r125827

2011-02-18 05:05:01 +00:00

LoopUnswitch

Factor code for testing whether replacing one value with another

2010-11-18 19:59:41 +00:00

LowerAtomic

Add an atomic lowering pass

2010-08-03 16:19:16 +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

Copy location info for current function argument from dbg.declare if respective store instruction does not have any location info.

2010-06-04 22:27:30 +00:00

MemCpyOpt

Teach valuetracking that byval arguments with a specified alignment are

2011-05-23 00:03:39 +00:00

MergeFunc

When removing a function from the function set and adding it to deferred, we

2011-02-09 06:32:02 +00:00

PhaseOrdering

final step needed to resolve PR6627, which allows us to flatten the code down to

2011-04-28 18:15:47 +00:00

PruneEH

fix some failures my callgraph dump format change broke.

2010-04-23 18:38:40 +00:00

Reassociate

Fix reassociate to use a worklist instead of recursing when new

2011-04-12 00:11:56 +00:00

ScalarRepl

Fix PR9820: a read-only call differs from a load in that a load doesn't

2011-05-06 10:30:37 +00:00

SCCP

Fix a ton of comment typos found by codespell. Patch by

2011-04-15 05:18:47 +00:00

SimplifyCFG

Add a parameter to ConstantFoldTerminator() that callers can use to ask it to also clean up the condition of any conditional terminator it folds to be unconditional, if that turns the condition into dead code. This just means it calls RecursivelyDeleteTriviallyDeadInstructions() in strategic spots. It defaults to the old behavior.

2011-05-22 16:24:18 +00:00

SimplifyLibCalls

Preserve line number information while simplifying libcalls.

2011-03-09 21:27:52 +00:00

Sink

Make BasicAliasAnalysis a normal AliasAnalysis implementation which

2010-10-18 18:04:47 +00:00

StripSymbols

DIGlobalVariable can be used to encode debug info for globals that are directly folded into a constant by FE.

2010-08-25 18:52:02 +00:00

TailCallElim

Don't do tail calls in a function that call setjmp. The stack might be

2011-05-16 03:05:33 +00:00

TailDup

Move few target-dependant tests to appropriate directories.

2011-05-06 18:24:46 +00:00