llvm/Transforms at fe02c69f84ad52d42be934e4fe702f03e4991a6a - llvm - Gitea: Git with a cup of tea

RPCS3/llvm

mirror of https://github.com/RPCS3/llvm.git synced 2025-02-13 23:00:33 +00:00

History

Duncan Sands fe02c69f84 Simplify (X<<1)-X into X. According to my auto-simplier this is the most common missed

simplification in fully optimized code.  It occurs sporadically in the testsuite, and
many times in 403.gcc: the final bitcode has 131 fewer subtractions after this change.
The reason that the multiplies are not eliminated is the same reason that instcombine
did not catch this: they are used by other instructions (instcombine catches this with
a more general transform which in general is only profitable if the operands have only
one use).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123754 91177308-0d34-0410-b5e6-96231b3b80d8

2011-01-18 09:24:58 +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

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

2011-01-16 08:09:24 +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

temporarily revert r123526. While working on a follow-on patch I

2011-01-15 07:51:19 +00:00

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

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

Teach constant folding to perform conversions from constant floating

2011-01-11 01:07:24 +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

Teach DAE to look for functions whose arguments are unused, and change all callers to pass in an undefvalue instead.

2011-01-16 21:25:33 +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

Reduce and merge testcases.

2011-01-16 09:13:31 +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

relax testcase a bit.

2011-01-14 07:46:33 +00:00

enhance FoldOpIntoPhi in instcombine to try harder when a phi has

2011-01-16 05:28:59 +00:00

Simplify (X<<1)-X into X. According to my auto-simplier this is the most common missed

2011-01-18 09:24:58 +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

merge tests into one crash.ll test.

2011-01-11 07:50:07 +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

revert 123144, reenabling the rest of memset formation.

2011-01-12 03:25:15 +00:00

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

2010-07-16 06:31:12 +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

if an alloca is only ever accessed as a unit, and is accessed with load/store instructions,

2011-01-16 06:18:28 +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