Chris Lattner
ccd3a878d0
Remove uses of ConstantHandling itf
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10783 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-12 18:12:44 +00:00
Chris Lattner
b7a5d3edee
Use constantexprs for casts. Eliminate use of the ConstantHandling interfaces
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10779 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-12 17:43:40 +00:00
Chris Lattner
84831642e4
Fix fairly severe bug in my last checking where we treated all unfoldable
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constants as being "true" when evaluating branches. This was introduced
because we now create constantexprs for the constants instead of failing the
fold.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10778 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-12 17:40:36 +00:00
Chris Lattner
c6a4d6a066
* Implement minor performance optimization for the getelementptr case
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* Implement SCCP of load instructions, implementing Transforms/SCCP/loadtest.ll
This allows us to fold expressions like "foo"[2], even if the pointer is only
a conditional constant.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10767 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-12 04:29:41 +00:00
Chris Lattner
5f16a13896
Do not hack on volatile loads. I'm not sure what the point of a volatile load
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from constant memory is, but lets not take chances.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10765 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-12 04:13:56 +00:00
Chris Lattner
1daee8b010
Implement SCCP/phitest.ll
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10763 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-12 03:57:30 +00:00
Chris Lattner
2d11f167e6
Implement Transforms/ScalarRepl/phinodepromote.ll, which is an important
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case that the C/C++ front-end generates.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10761 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-12 01:18:32 +00:00
Chris Lattner
2cacc0a306
Update obsolete comments
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Fix iterator invalidation problems which was causing -mstrip to miss some
entries, and read free'd memory. This shrinks the symbol table of 254.gap
from 333 to 284 bytes! :)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10751 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-10 21:36:49 +00:00
Chris Lattner
f7703df496
Finegrainify namespacification
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10727 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-09 06:12:26 +00:00
Chris Lattner
21949d9088
Remove dependence on structure index type. s/MT/FT
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10726 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-09 06:02:51 +00:00
Chris Lattner
d745602662
Finegrainify namespacification
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10725 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-09 06:02:20 +00:00
Chris Lattner
559d519549
Finegrainify namespacification
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add flags for PR82
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10724 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-09 05:53:38 +00:00
Chris Lattner
63a917bbc2
Inching towards fixing PR82
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10722 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-09 05:44:50 +00:00
Chris Lattner
329c1c6c94
Improve encapsulation in the Loop and LoopInfo classes by eliminating the
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getSubLoops/getTopLevelLoops methods, replacing them with iterator-based
accessors.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10714 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-08 00:09:44 +00:00
Chris Lattner
0898c78a52
Merging constants can cause further room for improvement. Iterate until
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we converge
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10618 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-28 07:19:08 +00:00
Chris Lattner
9a0a41f224
rename ClassifyExpression -> ClassifyExpr
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10592 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-23 08:04:08 +00:00
Chris Lattner
15cad759fe
More minor non-functional changes. This now computes the exit condition, though
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it doesn't do anything with it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10590 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-23 07:47:09 +00:00
Chris Lattner
e799902fbb
Remove extraneous #include
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finegrainify namespacification
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10589 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-23 07:43:38 +00:00
Chris Lattner
b97238079d
Fix memory corruption bug PR193
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10586 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-22 23:49:36 +00:00
Chris Lattner
500597a1c3
Don't mind me, I'm just refactoring away. This patch makes room for LFTR, but
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contains no functionality changes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10583 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-22 09:53:29 +00:00
Chris Lattner
18b3c97bc7
Implement IndVarsSimplify/pointer-indvars.ll, transforming pointer
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arithmetic into "array subscripts"
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10580 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-22 05:02:01 +00:00
Chris Lattner
3324e718bc
Fix PR194
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10573 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-22 03:58:44 +00:00
Chris Lattner
bd1a90ecc7
Fix ADCE/2003-12-19-MergeReturn.llx
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10539 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-19 09:08:34 +00:00
Chris Lattner
a3df8a964a
Remove the wierd "Operands" loop, by traversing basicblocks in reverse order
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10536 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-19 08:18:16 +00:00
Chris Lattner
e4365b2e8c
Implement LICM/sink_multiple.ll, by sinking all possible instructions in the
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loop before hoisting any.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10534 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-19 07:22:45 +00:00
Chris Lattner
0f98e75adf
Generalize a special case to fix PR187
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10531 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-19 06:27:08 +00:00
Chris Lattner
60921c9aa1
Factor code out into the Utils library
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10530 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-19 05:58:40 +00:00
Chris Lattner
abbc2dd779
Add new function
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10529 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-19 05:56:28 +00:00
John Criswell
47df12d80d
Reverted back to previous revision - this was previously merged
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according to the CVS log messages.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10517 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-18 17:19:19 +00:00
John Criswell
d000e1dc2f
Merged in RELEASE_11.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10516 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-18 16:43:17 +00:00
Chris Lattner
ba7df4c482
When we delete instructions from the loop, make sure to remove them from the
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AliasSetTracker as well.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10507 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-18 08:12:32 +00:00
Chris Lattner
9e45d2e0e8
Fix for PR185 & IndVarsSimplify/2003-12-15-Crash.llx
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10473 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-15 17:34:02 +00:00
Chris Lattner
d64152a708
Refactor code just a little bit, allowing us to implement TailCallElim/return_constant.ll
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10467 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-14 23:57:39 +00:00
Chris Lattner
00ad4a2d17
Do not promote volatile alias sets into registers
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10458 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-14 04:52:31 +00:00
Chris Lattner
ea9403f2aa
Fix LICM/2003-12-11-SinkingToPHI.ll, and quite possibly all of the other known problems in the universe.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10409 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-11 22:23:32 +00:00
Chris Lattner
1301515197
verifyFunction depends on dominator info, which levelraise does not declare
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that it needs. This is pretty scary code! This fixes
Regression.Transforms.LevelRaise.2002-07-16-SourceAndDestCrash
Regression.Transforms.LevelRaise.2002-07-31-AssertionFailure
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10406 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-11 21:47:37 +00:00
Chris Lattner
7d3ced934f
Fix bug: LICM/sink_multiple_exits.ll
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Thanks for pointing this out John :)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10387 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-10 22:35:56 +00:00
Chris Lattner
df45bd3803
Don't allow dead instructions to stop sinking early.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10386 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-10 20:43:29 +00:00
Chris Lattner
88369d214f
Fix bug: IndVarsSimplify/2003-12-10-RemoveInstrCrash.llx
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10385 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-10 20:43:04 +00:00
Chris Lattner
dead99325c
Finegrainify namespacification
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Fix bug: LowerInvoke/2003-12-10-Crash.llx
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10382 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-10 20:22:42 +00:00
Chris Lattner
ba4f3f6a41
Finegrainify namespacification
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Reorder #includes
Implement: IndVarsSimplify/2003-12-10-IndVarDeadCode.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10376 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-10 18:06:47 +00:00
Chris Lattner
66ea98e85c
Finegrainify namespacification
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Fix bug: LoopSimplify/2003-12-10-ExitBlocksProblem.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10373 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-10 17:20:35 +00:00
Chris Lattner
e3cfe8d563
Simplify code
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10371 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-10 16:58:24 +00:00
Chris Lattner
f594a03197
Avoid performing two identical lookups when one will suffice
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10370 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-10 16:57:24 +00:00
Chris Lattner
0ed2da9ac7
Make LICM itself a bit more efficient, and make the generated code more efficient too: don't insert a store in every exit block, because a particular block may be exited to more than once by a loop
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10369 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-10 15:56:24 +00:00
Chris Lattner
a2706518f9
Implement instruction sinking out of loops. This still can do a little bit
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better job, but this is the majority of the work. This implements
LICM/sink*.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10358 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-10 06:41:05 +00:00
Chris Lattner
010ba10032
Do not insert one entry PHI nodes in split exit blocks!
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10348 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-09 23:12:55 +00:00
Chris Lattner
ed6dfc2856
Refactor code a little bit, eliminating the gratuitous InstVisitor, which
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should make subsequent changes simpler. This also allows us to hoist vaarg
and vanext instructions
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10342 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-09 19:32:44 +00:00
Chris Lattner
92094b4d92
Fine grainify namespacification
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Code cleanups
Make LICM::SafeToHoist marginally more efficient
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10341 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-09 17:18:00 +00:00
Chris Lattner
cf2f89251d
Implement: TailCallElim/accum_recursion_constant_arg.ll
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Also make sure to clean up any PHI nodes that are inserted which are pointless.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10333 91177308-0d34-0410-b5e6-96231b3b80d8
2003-12-08 23:37:35 +00:00