Commit Graph

521 Commits

Author SHA1 Message Date
Nick Lewycky
ce2c51b670 Pull LLVMContext out of PromoteMemToReg.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89645 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-23 03:50:44 +00:00
Jim Grosbach
20f4d34fe3 Make EliminateDuplicatePHINodes() available as a utility function
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89297 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-19 02:02:10 +00:00
Dan Gohman
4ec01b268e Add an option for running GVN with redundant load processing disabled.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88742 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-14 02:27:51 +00:00
Chris Lattner
f8fb7c26ee remove the now dead condprop pass, PR3906.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86810 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-11 05:56:35 +00:00
Devang Patel
53bb5c95af Implement support to debug inlined functions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86748 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-10 23:06:00 +00:00
Chris Lattner
40d8c28b27 move some generally useful functions out of jump threading
into libanalysis and transformutils.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86735 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-10 22:26:15 +00:00
Chris Lattner
dce94d92df refactor TryToSimplifyUncondBranchFromEmptyBlock out of SimplifyCFG.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86666 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-10 05:59:26 +00:00
Douglas Gregor
0c8ae782cb Make a few more LLVM headers parsable as standalone headers.
Fix some problems with the hidden copy constructors for
ImmutableMap/ImmutableSet found by Clang++.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86186 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-05 23:01:30 +00:00
Duncan Sands
857e9996c7 Improve the other instance of the comment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85733 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-01 19:16:21 +00:00
Chris Lattner
1b98ff3e4f update the comment above llvm::SplitCriticalEdge, and make
it abort on IndirectBrInst as describe in the comment.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85688 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-31 21:51:10 +00:00
Dan Gohman
438b583dbd Revert r85667. LoopUnroll currently can't call utility functions which
auto-update the DominatorTree because it doesn't keep the DominatorTree
current while it works.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85670 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-31 17:33:01 +00:00
Dan Gohman
f230d8ad15 Merge the enhancements from LoopUnroll's FoldBlockIntoPredecessor into
MergeBlockIntoPredecessor. This makes SimplifyCFG slightly more aggressive,
and makes it unnecessary for LoopUnroll to have its own copy of this code.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85667 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-31 16:08:00 +00:00
Dan Gohman
9f476e3179 Remove CodeGenLICM. It's largely obsoleted by MachineLICM's new ability
to unfold loop-invariant loads.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85657 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-31 14:35:41 +00:00
Evan Cheng
2f192c256c Add option to createGVNPass to disable PRE.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85609 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-30 20:12:24 +00:00
Nick Lewycky
40cc524ede Add ABCD, a generalized implementation of the Elimination of Array Bounds
Checks on Demand algorithm which looks at arbitrary branches instead of loop
iterations. This is GSoC work by Andre Tavares with only editorial changes
applied!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85382 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-28 07:03:15 +00:00
Owen Anderson
8b251c25b2 Forgot to commit these.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85180 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-26 23:56:52 +00:00
Victor Hernandez
046e78ce55 Remove FreeInst.
Remove LowerAllocations pass.
Update some more passes to treate free calls just like they were treating FreeInst.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85176 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-26 23:43:48 +00:00
Dan Gohman
6000e253d4 Check in the experimental GEP splitter pass. This pass splits complex
GEPs (more than one non-zero index) into simple GEPs (at most one
non-zero index).  In some simple experiments using this it's not
uncommon to see 3% overall code size wins, because it exposes
redundancies that can be eliminated, however it's tricky to use
because instcombine aggressively undoes the work that this pass does.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85144 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-26 19:12:14 +00:00
Dan Gohman
5fa75b0fa4 MapValue doesn't needs its LLVMContext argument.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85020 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-24 23:37:16 +00:00
Dan Gohman
bfd5e3d7b1 Add an explicit keyword.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85009 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-24 19:56:23 +00:00
Victor Hernandez
66284e063a Auto-upgrade free instructions to calls to the builtin free function.
Update all analysis passes and transforms to treat free calls just like FreeInst.
Remove RaiseAllocations and all its tests since FreeInst no longer needs to be raised.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84987 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-24 04:23:03 +00:00
Chris Lattner
98b532cf33 remove the IndMemRemPass, which only made sense for when malloc/free were intrinsic
instructions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84404 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-18 05:02:09 +00:00
Victor Hernandez
a276c603b8 Remove MallocInst from LLVM Instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84299 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-17 01:18:07 +00:00
Duncan Sands
ed90342d8a Strip trailing white space.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84256 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-16 15:20:13 +00:00
Dan Gohman
e4aeec003f Move the InlineCost code from Transforms/Utils to Analysis.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83998 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-13 18:30:07 +00:00
Dan Gohman
9b39cf5ac8 Start refactoring the inline cost estimation code so that it can be used
for purposes other than inlining.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83997 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-13 18:24:11 +00:00
Chris Lattner
0bef562ea2 add a simple helper method.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83745 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-10 23:41:48 +00:00
Chris Lattner
f5a1fb6b24 add ability for clients of SSAUpdater to find out about the
PHI nodes inserted.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83744 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-10 23:15:24 +00:00
Chris Lattner
1a8d4de397 add the ability to get a rewritten value from the middle of a block,
not just at the end.  Add a big comment explaining when this could
be useful (which never happens for jump threading).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83741 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-10 23:00:11 +00:00
Chris Lattner
5fb107287f rename GetValueInBlock -> GetValueAtEndOfBlock to better reflect
what it does.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83740 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-10 22:41:58 +00:00
Chris Lattner
93f3bcf7f3 Implement an efficient and fully general SSA update mechanism that
works on unstructured CFGs.  This implements PR217, our oldest open PR.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83705 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-10 09:04:27 +00:00
Dale Johannesen
bdb984bc27 Use names instead of numbers for some of the magic
constants used in inlining heuristics (especially
those used in more than one file).  No functional change.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83675 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-09 21:42:02 +00:00
Chris Lattner
7963e15951 remove predicate simplifier, it never got the last bugs beaten
out of it, and jump threading, condprop and gvn are now getting
most of the benefit.  This was approved by Nicholas and Nicolas.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83390 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-06 16:59:46 +00:00
Owen Anderson
08993acada Do away with the strange use of BitVectors in SSI, and just use normal sets. This makes the code much more C++/LLVM-ish.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83286 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-04 18:49:55 +00:00
Chris Lattner
99be299edb remove the GVNPRE pass. It has been subsumed by the GVN pass.
Ok'd by Owen.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83193 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-01 02:18:36 +00:00
Dan Gohman
d84db11333 Convert LoopSimplify and LoopExtractor from FunctionPass to LoopPass.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82990 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-28 14:37:51 +00:00
Dan Gohman
6f65d79750 Add a new pass for doing late hoisting of floating-point and vector
constants out of loops. These aren't covered by the regular LICM
pass, because in LLVM IR constants don't require separate
instructions. They're not always covered by the MachineLICM pass
either, because it doesn't know how to unfold folded constant-pool
loads. This is somewhat experimental at this point, and off by
default.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82076 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-16 20:25:11 +00:00
Andreas Neustifter
ad80981a10 Preserve ProfileInfo during CodeGenPrepare.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82034 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-16 09:26:52 +00:00
Nick Lewycky
fd5249e15b Correctly handle the case where a comparison is created in one BasicBlock and
used by a terminator in another.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81437 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-10 07:02:09 +00:00
Dan Gohman
5c89b5240c Re-apply r80926, with fixes: keep the domtree informed of new blocks
that get created during loop unswitching, and fix SplitBlockPredecessors'
LCSSA updating code to create new PHIs instead of trying to just move
existing ones.

Also, optimize Loop::verifyLoop, since it gets called a lot. Use
searches on a sorted list of blocks instead of calling the "contains"
function, as is done in other places in the Loop class, since "contains"
does a linear search. Also, don't call verifyLoop from LoopSimplify or
LCSSA, as the PassManager is already calling verifyLoop as part of
LoopInfo's verifyAnalysis.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81221 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-08 15:45:00 +00:00
Evan Cheng
8f78a58e14 Revert r80926. It causes loop unswitch assertion and slow down some JIT tests significantly.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81101 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-06 02:26:10 +00:00
Dan Gohman
8fc5ad3369 Add a verifyAnalysis to LoopInfo, LoopSimplify, and LCSSA form that verify
that these passes are properly preserved.

Fix several transformation passes that claimed to preserve LoopSimplify
form but weren't.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80926 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-03 16:31:42 +00:00
Andreas Neustifter
ad09d42e04 Addedum to r80712, forgot to add files.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80713 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-01 19:05:58 +00:00
Chris Lattner
5095e3d1d1 Fix some nasty callgraph dangling pointer problems in
argpromotion and structretpromote.  Basically, when replacing
a function, they used the 'changeFunction' api which changes
the entry in the function map (and steals/reuses the callgraph
node).

This has some interesting effects: first, the problem is that it doesn't
update the "callee" edges in any callees of the function in the call graph.
Second, this covers for a major problem in all the CGSCC pass stuff, which 
is that it is completely broken when functions are deleted if they *don't*
reuse a CGN.  (there is a cute little fixme about this though :).

This patch changes the protocol that CGSCC passes must obey: now the CGSCC 
pass manager copies the SCC and preincrements its iterator to avoid passes
invalidating it.  This allows CGSCC passes to mutate the current SCC.  However
multiple passes may be run on that SCC, so if passes do this, they are now
required to *update* the SCC to be current when they return.

Other less interesting parts of this patch are that it makes passes update
the CG more directly, eliminates changeFunction, and requires clients of
replaceCallSite to specify the new callee CGN if they are changing it.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80527 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-31 00:19:58 +00:00
Chris Lattner
199ba42cbf Implement a new optimization in the inliner: if inlining multiple
calls into a function and if the calls bring in arrays, try to merge
them together to reduce stack size.  For example, in the testcase
we'd previously end up with 4 allocas, now we end up with 2 allocas.

As described in the comments, this is not really the ideal solution
to this problem, but it is surprisingly effective.  For example, on
176.gcc, we end up eliminating 67 arrays at "gccas" time and another
24 at "llvm-ld" time.

One piece of concern that I didn't look into: at -O0 -g with
forced inlining this will almost certainly result in worse debug
info.  I think this is acceptable though given that this is a case
of "debugging optimized code", and we don't want debug info to
prevent the optimizer from doing things anyway.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80215 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-27 06:29:33 +00:00
Chris Lattner
12f0babca4 reduce header #include'age
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80204 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-27 04:32:07 +00:00
Chris Lattner
8f2718fbef enhance InlineFunction to be able to optionally return
a the list of static allocas that it inlined.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80203 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-27 04:20:52 +00:00
Chris Lattner
ec1bea0d94 smallvectorize the list of returns built by CloneAndPruneFunctionInto.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80202 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-27 04:02:30 +00:00
Chris Lattner
597ef10577 remove CloneTrace, which appears to be dead since 2004.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80201 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-27 03:56:43 +00:00
Benjamin Kramer
12ddd40953 Make LLVMContext and LLVMContextImpl classes instead of structs.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78690 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-11 17:45:13 +00:00