Chandler Carruth fca3f4021a Teach the new SROA a new trick. Now we zap any memcpy or memmoves which ...

are in fact identity operations. We detect these and kill their
partitions so that even splitting is unaffected by them. This is
particularly important because Clang relies on emitting identity memcpy
operations for struct copies, and these fold away to constants very
often after inlining.

Fixes the last big performance FIXME I have on my plate.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165285 91177308-0d34-0410-b5e6-96231b3b80d8

2012-10-05 01:29:09 +00:00

..

ADCE

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ArgumentPromotion

Fix the remaining TCL-style quotes found in the testsuite. This is

2012-07-02 19:09:46 +00:00

BBVectorize

Allow BBVectorize to form non-2^n-length vectors.

2012-06-28 05:42:42 +00:00

BlockPlacement

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BranchFolding

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CodeExtractor

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CodeGenPrepare

Move load_to_switch.ll to test/CodeGen/SPARC/

2012-09-19 09:25:03 +00:00

ConstantMerge

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ConstProp

Fix the remaining TCL-style quotes found in the testsuite. This is

2012-07-02 19:09:46 +00:00

CorrelatedValuePropagation

CorrelatedPropagation: BasicBlock::removePredecessor can simplify PHI nodes. If the it's the condition of a SwitchInst, reload it.

2012-09-28 10:42:50 +00:00

DeadArgElim

Fix the remaining TCL-style quotes found in the testsuite. This is

2012-07-02 19:09:46 +00:00

DeadStoreElimination

Make this test check the transforms it's actually doing. Also add a test that it

2012-09-25 18:17:38 +00:00

EarlyCSE

Fix regression from r151466: an we can't replace uses of an instruction reachable from the entry block with uses of an instruction not reachable from the entry block. PR12231.

2012-03-13 01:06:07 +00:00

FunctionAttrs

Convert all tests using TCL-style quoting to use shell-style quoting.

2012-07-02 12:47:22 +00:00

GlobalDCE

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GlobalOpt

GlobalOpt: non-constexpr bitcasts or GEPs can occur even if the global value is only stored once.

2012-09-28 10:01:27 +00:00

GVN

Make MemoryBuiltins aware of TargetLibraryInfo.

2012-08-29 15:32:21 +00:00

IndVarSimplify

Fix PR13967.

2012-10-03 23:59:47 +00:00

Inline

rename test

2012-09-19 09:22:17 +00:00

InstCombine

The alignment of an sret parameter is known: it must be at least the

2012-10-04 13:36:31 +00:00

InstSimplify

Revert r153521 as it's causing large regressions on the nightly testers.

2012-03-28 18:42:50 +00:00

Internalize

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IPConstantProp

Convert all tests using TCL-style quoting to use shell-style quoting.

2012-07-02 12:47:22 +00:00

JumpThreading

JumpThreading: when default destination is the destination of some cases in a

2012-09-05 23:45:58 +00:00

LCSSA

Convert all tests using TCL-style quoting to use shell-style quoting.

2012-07-02 12:47:22 +00:00

LICM

LICM may hoist an instruction with undefined behavior above a trap.

2012-09-04 10:25:04 +00:00

LoopDeletion

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LoopIdiom

LoopIdiom: Give up when the loop is not in canonical form.

2012-09-21 17:27:23 +00:00

LoopRotate

LoopRotation: Make the brute force DomTree update more brute force.

2012-09-02 11:57:22 +00:00

LoopSimplify

Convert all tests using TCL-style quoting to use shell-style quoting.

2012-07-02 12:47:22 +00:00

LoopStrengthReduce

LSR critical edge splitting fix for PR13756.

2012-09-18 17:51:33 +00:00

LoopUnroll

Fix tests that didn't test anything.

2012-09-26 09:51:39 +00:00

LoopUnswitch

Fix tests that didn't test anything.

2012-09-26 09:51:39 +00:00

LowerAtomic

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LowerExpectIntrinsic

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LowerInvoke

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LowerSwitch

PR1255 related changes (case ranges):

2012-05-24 09:33:20 +00:00

Mem2Reg

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MemCpyOpt

In my recent change to avoid use of underaligned memory I didn't notice that

2012-10-04 13:53:21 +00:00

MergeFunc

Fix the remaining TCL-style quotes found in the testsuite. This is

2012-07-02 19:09:46 +00:00

MetaRenamer

Review feedback from Duncan Sands. Alphabetize includes and simplify

2012-09-14 19:19:57 +00:00

ObjCARC

Detect overflow in the path count computation. rdar://12277446.

2012-09-12 20:45:17 +00:00

PhaseOrdering

Add test case for r164850.

2012-09-29 00:12:08 +00:00

PruneEH

The normal edge of an invoke is not allowed to branch to a block with a

2012-08-10 20:55:20 +00:00

Reassociate

Stop reassociate from looking through expressions of arbitrary complexity. This

2012-07-26 09:26:40 +00:00

ScalarRepl

Port the global copy optimization from the SROA pass to InstCombine.

2012-08-21 08:39:44 +00:00

SCCP

Fix the remaining TCL-style quotes found in the testsuite. This is

2012-07-02 19:09:46 +00:00

SimplifyCFG

SimplifyCFG: Enhance the "remove CFG edge that leads to null pointer dereference" optimization to also handle instructions with multiple uses.

2012-10-04 16:11:49 +00:00

SimplifyLibCalls

SimplifyLibCalls: Give all safely-shrinkable libcalls the same treatment.

2012-08-22 19:39:15 +00:00

Sink

Enhance the sinking code to handle diamond patterns. Patch by

2012-05-31 08:09:49 +00:00

SROA

Teach the new SROA a new trick. Now we zap any memcpy or memmoves which

2012-10-05 01:29:09 +00:00

StripSymbols

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TailCallElim

Convert the uses of '|&' to use '2>&1 |' instead, which works on old

2012-07-02 18:37:59 +00:00

TailDup

Convert the uses of '|&' to use '2>&1 |' instead, which works on old

2012-07-02 18:37:59 +00:00