llvm/Transforms at e41d3c015ce5cafde305d9a6d9baaae1c41bf46a - llvm - Gitea: Git with a cup of tea

RPCS3/llvm

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History

Chris Lattner e41d3c015c Teach loop-idiom to turn a loop containing a memset into a larger memset

when safe.

The testcase is basically this nested loop:
void foo(char *X) {
  for (int i = 0; i != 100; ++i) 
    for (int j = 0; j != 100; ++j)
      X[j+i*100] = 0;
}

which gets turned into a single memset now.  clang -O3 doesn't optimize
this yet though due to a phase ordering issue I haven't analyzed yet.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122806 91177308-0d34-0410-b5e6-96231b3b80d8

2011-01-04 07:46:33 +00:00

..

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 BasicAliasAnalysis a normal AliasAnalysis implementation which

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

Change tests from "opt %s" to "opt < %s" so that opt doesn't see the

2009-09-11 18:01:28 +00:00

Change tests from "opt %s" to "opt < %s" so that opt doesn't see the

2009-09-11 18:01:28 +00:00

Change tests from "opt %s" to "opt < %s" so that opt doesn't see the

2009-09-11 18:01:28 +00:00

revert r122164, I'm going to go with a different approach.

2010-12-19 04:23:03 +00:00

fix PR8144, a bug where constant merge would merge globals marked

2010-09-15 00:30:11 +00:00

test/Transforms/ConstProp/logicaltest.ll: FileCheck-ize.

2010-12-29 03:58:56 +00:00

CorrelatedValuePropagation

Fix PR8790, another instance where unreachable code can cause instruction simplification to fail,

2010-12-15 00:55:35 +00:00

Preserve debug info attached with call instruction while eliminating dead argument.

2010-04-30 20:23:54 +00:00

DeadStoreElimination

Fix PR8728, a miscompilation I recently introduced. When optimizing

2010-12-06 01:48:06 +00:00

Duncan deftly points out that readnone functions aren't

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

Make ModRefBehavior a lattice. Use this to clean up AliasAnalysis

2010-11-10 01:02:18 +00:00

Change tests from "opt %s" to "opt < %s" so that opt doesn't see the

2009-09-11 18:01:28 +00:00

fix a globalopt crash on two Adobe-C++ testcases that the recent

2011-01-01 22:31:46 +00:00

Give GVN back the ability to perform simple conditional propagation on conditional branch values.

2010-12-21 23:54:34 +00:00

Remove LoopIndexSplit pass. It is neither maintained nor used by anyone.

2010-10-07 23:29:37 +00:00

when eliding a byval copy due to inlining a readonly function, we have

2010-12-20 08:10:40 +00:00

When determining if we can fold (x >> C1) << C2, the bits that we need to verify are zero

2010-12-23 23:56:24 +00:00

Revert commit 122654 at the request of Chris, who reckons that instsimplify

2011-01-01 20:08:02 +00:00

Change tests from "opt %s" to "opt < %s" so that opt doesn't see the

2009-09-11 18:01:28 +00:00

more test cleanup

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

Teach jump threading to "look through" a select when the branch direction of a terminator depends on it.

2010-12-15 09:51:20 +00:00

Avoid depending on LCSSA implicitly pulling in LoopSimplify.

2010-07-26 18:00:43 +00:00

Enhance LICM to promote alias sets whose pointers themselves are stored,

2010-12-19 05:57:25 +00:00

Make LoopSimplify change conditional branches in loop exiting blocks

2010-02-25 06:57:05 +00:00

Teach loop-idiom to turn a loop containing a memset into a larger memset

2011-01-04 07:46:33 +00:00

Teach loop rotate to hoist trivially invariant instructions

2010-09-06 01:10:22 +00:00

Fix PR8702 by not having LoopSimplify claim to preserve LCSSA form. As described

2011-01-02 13:38:21 +00:00

LoopStrengthReduce

Correct bogus module triple specifications.

2010-08-30 10:48:29 +00:00

Revert r113439, which relaxed the requirement that loops containing calls cannot be unrolled. After some discussion,

2010-09-09 20:02:23 +00:00

Factor code for testing whether replacing one value with another

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

Add an atomic lowering pass

2010-08-03 16:19:16 +00:00

Change tests from "opt %s" to "opt < %s" so that opt doesn't see the

2009-09-11 18:01:28 +00:00

Change tests from "opt %s" to "opt < %s" so that opt doesn't see the

2009-09-11 18:01:28 +00:00

Change tests from "opt %s" to "opt < %s" so that opt doesn't see the

2009-09-11 18:01:28 +00:00

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

start using irbuilder to make mem intrinsics in a few passes.

2010-12-26 22:57:41 +00:00

Arrays and vectors with different numbers of elements are not equivalent.

2010-07-16 06:31:12 +00:00

PartialSpecialize

Now using a variant of the existing inlining heuristics to decide whether to create a given specialization of a function in PartialSpecialization. If the total performance bonus across all callsites passing the same constant exceeds the specialization cost, we create the specialization.

2010-10-09 22:06:36 +00:00

fix some failures my callgraph dump format change broke.

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

fix a nice subtle reassociate bug which would only occur

2010-03-05 07:18:54 +00:00

Treat a call of function pointer like a load of the pointer when considering

2010-11-24 22:04:20 +00:00

fix PR7876: If ipsccp decides that a function's address is taken

2010-08-12 22:25:23 +00:00

SimplifyCFG: Ranges can be larger than 64 bits. Fixes Release-selfhost build.

2010-12-17 10:48:14 +00:00

SimplifyLibCalls

Revert r64460. strtol and friends cannot be marked readonly, even with

2010-12-17 01:09:43 +00:00

Make BasicAliasAnalysis a normal AliasAnalysis implementation which

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

Change tests from "opt %s" to "opt < %s" so that opt doesn't see the

2009-09-11 18:01:28 +00:00

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

merge two tests.

2010-08-31 18:44:03 +00:00

The output of opt -stats must be sent to stderr. Patch by NAKAMURA Takumi!

2010-09-01 18:32:56 +00:00