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e9580bf254
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4007 Commits

Author SHA1 Message Date
Jeffrey Yasskin
e9580bf254 In ABCD, change the non-null Bound*s to Bound&s. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99711 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-27 08:15:46 +00:00
Jeffrey Yasskin
2f97b46f7b Fix a memory leak in ABCD by giving ownership of Bound objects to the 
MemoizedResultChart.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99710 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-27 08:09:24 +00:00
Dan Gohman
449f31cb9d Ignore debug intrinsics in yet more places. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99580 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-26 00:33:27 +00:00
Gabor Greif
60ad781c61 rename use_const_iterator to const_use_iterator for consistency's sake 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99564 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-25 23:06:16 +00:00
Chris Lattner
219d77430b fix PR6642, GVN forwarding from memset to load of the base of the memset. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99488 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-25 05:58:19 +00:00
Evan Cheng
eb8c6459fc Move OptChkCall off LibCallOptimization into StrCpyOpt. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99418 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-24 20:19:04 +00:00
Gabor Greif
c9f7500d17 Finally land the InvokeInst operand reordering. 
I have audited all getOperandNo calls now, fixing
hidden assumptions. CallSite related uglyness will
be eliminated successively.

Note this patch has a long and griveous history,
for all the back-and-forths have a look at
CallSite.h's log.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99399 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-24 13:21:49 +00:00
Gabor Greif
bd1f99341e increase const goodness and remove pointless getUser() calls 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99395 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-24 10:29:52 +00:00
Bill Wendling
87a10f5b2f Skip debugging intrinsics when sinking unused invariants. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99324 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-23 21:15:59 +00:00
Evan Cheng
0289b419a4 Teach simplify libcall to transform __strcpy_chk to __memcpy_chk to enable optimizations down stream. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99282 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-23 15:48:04 +00:00
Gabor Greif
1cde4af157 backing out r99170 because it still fails on clang-x86_64-darwin10-fnt 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99171 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-22 09:11:00 +00:00
Gabor Greif
9b1061e2e3 Now that hopefully all direct accesses to InvokeInst operands are fixed 
we can reapply the InvokeInst operand reordering patch. (see r98957).



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99170 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-22 08:28:00 +00:00
Dan Gohman
472fdf7090 Clear the SCEVExpander's insertion point after making deletions, 
so that the SCEVExpander doesn't retain a dangling pointer as its
insert position. The dangling pointer in this case wasn't ever used
to insert new instructions, but it was causing trouble with
SCEVExpander's code for automatically advancing its insert position
past debug intrinsics.

This fixes use-after-free errors that valgrind noticed in
test/Transforms/IndVarSimplify/2007-06-06-DeleteDanglesPtr.ll and
test/Transforms/IndVarSimplify/exit_value_tests.ll.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99036 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-20 03:53:53 +00:00
Gabor Greif
cc52ed0c4f back out r98957, it broke http://smooshlab.apple.com:8010/builders/clang-x86_64-darwin10-fnt/builds/703 in the nightly test suite 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98958 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-19 13:50:02 +00:00
Gabor Greif
f4f10e3779 Recommit r80858 again (which has been backed out in r80871). 
This time I did a self-hosted bootstrap on Linux x86-64,
with no problems. Let's see how darwin 64-bit self-hosting
goes. At the first sign of failure I'll back this out.

Maybe the valgrind bots give me a hint of what may be wrong
(it at all).



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98957 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-19 11:55:53 +00:00
Benjamin Kramer
2d7186ae6d str[r]chr returns its pointer argument so we cannot mark it as nocapture. Thanks to Duncan for spotting my mistake. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98671 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-16 20:33:15 +00:00
Benjamin Kramer
4446b04052 Mark str[r]chr readonly. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98663 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-16 19:36:43 +00:00
Devang Patel
7b9f6b1b21 Skip debug info intrinsics. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98584 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-15 22:23:03 +00:00
Devang Patel
ca70495797 In "empty" bb, the return instruction may not be first instruction, if dbg value intrinsics are present in this bb. Use terminator to find return instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98565 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-15 19:05:46 +00:00
Bill Wendling
ead138bc62 Skip over debug info when trying to merge two return BBs. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98491 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-14 10:40:55 +00:00
Benjamin Kramer
0b6cb50738 Factor checked library call optimization into a common helper class and use it 
to unify the almost identical code in CodeGenPrepare and InstCombineCalls.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98338 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-12 09:27:41 +00:00
Nate Begeman
75d5fe9213 Whoops this already existed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98297 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-11 23:21:19 +00:00
Nate Begeman
47a53a6e4c Add a handful of additional useful pass manager things to the C API 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98296 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-11 23:06:07 +00:00
Benjamin Kramer
7fa30b8e5d stpcpy is so similar to strcpy, it doesn't deserve a complete copy of the __strcpy_chk -> strcpy code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98284 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-11 20:45:13 +00:00
Eric Christopher
19888ca8b4 Lower stpcpy_chk when possible. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98274 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-11 19:24:34 +00:00
Eric Christopher
040056fd11 Do some final lowering in CodeGenPrepare of _chk calls similar to 
that in InstCombineCalls.

More call lowering needed.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98228 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-11 02:41:03 +00:00
Dan Gohman
bbf81d8811 Add a DominatorTree argument to isLCSSA so that it doesn't have to 
compute a set of reachable blocks for itself each time it is called, which
is fairly frequently.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98179 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-10 19:38:49 +00:00
Eric Christopher
27ceaa13f8 Migrate _chk call lowering from SimplifyLibCalls to InstCombine. Stub 
out the remainder of the calls that we should lower in some way and
move the tests to the new correct directory. Fix up tests that are now
optimized more than they were before by -instcombine.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97875 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-06 10:50:38 +00:00
Eric Christopher
b6174e3605 Move SimplifyLibCalls's LibCall builders to a separate file so they 
can be used in more places.  Add an argument for the TargetData that
most of them need. Update for the getInt8PtrTy() change.  Should be
no functionality change.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97844 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-05 22:25:30 +00:00
Evan Cheng
a79eb387ac Safely turn memset_chk etc. to non-chk variant if the known object size is >= memset / memcpy / memmove size. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97828 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-05 20:59:47 +00:00
Chris Lattner
893075f46e fix a nice subtle reassociate bug which would only occur 
in a very specific use pattern embodied in the carefully
reduced testcase.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97794 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-05 07:18:54 +00:00
Eric Christopher
25ec483cfc Move GetStringLength and helper from SimplifyLibCalls to ValueTracking. 
No functionality change.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97793 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-05 06:58:57 +00:00
Dan Gohman
087bd1e3a1 Make SCEVExpander and LSR more aggressive about hoisting expressions out 
of loops.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97642 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-03 05:29:13 +00:00
Dan Gohman
069d6f3396 Non-affine post-inc SCEV expansions have more code which must be 
emitted after the increment. Make sure the insert position
reflects this. This fixes PR6453.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97537 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-02 01:59:21 +00:00
Bob Wilson
3bd19d753b Don't attempt load PRE when there is no real redundancy (i.e., the load is in 
a loop and is itself the only dependency).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97526 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-02 00:09:29 +00:00
Bob Wilson
70704978af When GVN needs to split critical edges for load PRE, check all of the 
predecessors before returning.  Otherwise, if multiple predecessor edges need
splitting, we only get one of them per iteration.  This makes a small but
measurable compile time improvement with -enable-full-load-pre.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97521 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-01 23:37:32 +00:00
Evan Cheng
19d417c346 MemoryDepAnalysis is not used if redundant load processing is disabled. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97512 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-01 22:23:12 +00:00
Dan Gohman
3f46a3abee Spelling fixes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97453 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-01 17:49:51 +00:00
Bob Wilson
b29d7d2542 Revert r97245 which seems to be causing performance problems. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97366 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-28 05:34:05 +00:00
Chris Lattner
9fcd72b71a fix grammaro's pointed out by daniel 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97313 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-27 07:50:40 +00:00
Chris Lattner
d38cdb020e fix PR6414, a nondeterminism issue in IPSCCP which was because 
of a subtle interation in a loop operating in densemap order.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97288 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-27 00:07:42 +00:00
Bob Wilson
8561dcd730 Move the EnableFullLoadPRE flag from a separate command-line option to an 
argument of createGVNPass and set it automatically for -O3.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97245 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-26 19:09:47 +00:00
Bob Wilson
60df9077eb Remove unused "NoPRE" parameter in GVN and createGVNPass(). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97235 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-26 18:35:19 +00:00
Dan Gohman
8566963713 Make LoopSimplify change conditional branches in loop exiting blocks 
which branch on undef to branch on a boolean constant for the edge
exiting the loop. This helps ScalarEvolution compute trip counts for
loops.

Teach ScalarEvolution to recognize single-value PHIs, when safe, and
ForgetSymbolicName to forget such single-value PHI nodes as apprpriate
in ForgetSymbolicName.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97126 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-25 06:57:05 +00:00
Daniel Dunbar
6d8f2ca646 Reapply r97010, the speculative revert failed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97036 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-24 08:48:04 +00:00
Daniel Dunbar
8c0c99016b Speculatively revert r97010, "Add an argument to PHITranslateValue to specify 
the DominatorTree. ...", in hopes of restoring poor old PPC bootstrap.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97027 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-24 06:55:22 +00:00
Bob Wilson
9d2ed8e632 Add an argument to PHITranslateValue to specify the DominatorTree. If this 
argument is non-null, pass it along to PHITranslateSubExpr so that it can
prefer using existing values that dominate the PredBB, instead of just
blindly picking the first equivalent value that it finds on a uselist.
Also when the DominatorTree is specified, have PHITranslateValue filter
out any result that does not dominate the PredBB.  This is basically just
refactoring the check that used to be in GetAvailablePHITranslatedSubExpr
and also in GVN.

Despite my initial expectations, this change does not affect the results
of GVN for any testcases that I could find, but it should help compile time.
Before this change, if PHITranslateSubExpr picked a value that does not
dominate, PHITranslateWithInsertion would then insert a new value, which GVN
would later determine to be redundant and would replace.  By picking a good
value to begin with, we save GVN the extra work of inserting and then
replacing a new value.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97010 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-24 01:39:00 +00:00
Bob Wilson
188f428e4e Update memdep when load PRE inserts a new load, and add some debug output. 
I don't have a small testcase for this.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96890 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-23 05:55:00 +00:00
Bob Wilson
74175c2ca1 Erase deleted instructions from GVN's ValueTable. This fixes assertion 
failures from ValueTable::verifyRemoved() when using -debug.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96805 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-22 21:39:41 +00:00
Dan Gohman
454d26dc43 Remove unused variables and parameters. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96780 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-22 04:11:59 +00:00