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8448 Commits

Author SHA1 Message Date
Andrew Trick
ed38f1ca2e Remove the temporary flag -disable-unroll-scev and dead code. 
SCEV should now be used for trip count analysis, not LoopInfo.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145262 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-28 19:22:09 +00:00
Nick Lewycky
bba40db072 Place the "cfg checksum" around a test. This was recently added in April 2011 to 
gcc, though I thought it was older (my gcc 4.4 has it as a local patch. Whoops!)
This fixes PR10589.

Also add some debugging statements.

Remove GcnoFiles, the mapping from CompilationUnit to raw_ostream. Now that we
start by iterating over each CU and descending into them, there's no need to
maintain a mapping.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145208 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-27 23:22:20 +00:00
Benjamin Kramer
0861f5793a Move code into anonymous namespaces. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145154 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-26 23:01:57 +00:00
Kostya Serebryany
d2703dec27 [asan] do not instrument threadlocal globals, this is buggy 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145092 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-23 02:10:54 +00:00
Nick Lewycky
173862e546 Refactor code to use new attribute getters on CallSite for NoCapture and ByVal. 
Suggested in code review by Eli.

That code in InstCombine looks kinda suspicious.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145013 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-20 19:09:04 +00:00
Kostya Serebryany
5a3a9c9371 [asan] workaround for reg alloc bug 11395: don't instrument functions with large chunks of inline assembler 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144962 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-18 01:41:06 +00:00
Kostya Serebryany
2e7fb2f736 quick fix: remove GlobalVariable::GlobalVariable mistakenly commited at r144933. For some reason this compiles on linux 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144936 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-17 23:37:53 +00:00
Andrew Trick
4f3052403c Fix an overly general check in SimplifyIndvar to handle useless phi cycles. 
The right way to check for a binary operation is
cast<BinaryOperator>. The original check: cast<Instruction> &&
numOperands() == 2 would match phi "instructions", leading to an
infinite loop in extreme corner case: a useless phi with operands
[self, constant] that prior optimization passes failed to remove,
being used in the loop by another useless phi, in turn being used by an
lshr or udiv.

Fixes PR11350: runaway iteration assertion.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144935 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-17 23:36:35 +00:00
Kostya Serebryany
7cf2a04361 fall back to explicit list of allowed linkages when instrumenting globals in asan; add a test check that asan does not touch linkonce_odr 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144933 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-17 23:14:59 +00:00
Eli Friedman
9d434dbff3 Add support for custom names for library functions in TargetLibraryInfo. Add a custom name for fwrite and fputs on x86-32 OSX. Make SimplifyLibCalls honor the custom 
names for fwrite and fputs.

Fixes <rdar://problem/9815881>.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144876 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-17 01:27:36 +00:00
Nick Lewycky
ae10dd2859 Merge isObjectPointerWithTrustworthySize with getPointerSize. Use it when 
looking at the size of the pointee. Fixes PR11390!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144773 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-16 03:49:48 +00:00
Kostya Serebryany
800e03f598 AddressSanitizer, first commit (compiler module only) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144758 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-16 01:35:23 +00:00
Kostya Serebryany
a2a2d1fddd test commit to verify that commit access works (added blank line) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144748 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-16 01:14:38 +00:00
Nadav Rotem
de631128d6 Fix MSVC warnings by adding a cast. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144721 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-15 22:54:21 +00:00
Benjamin Kramer
b5ccb25bc2 StringRefize and simplify. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144675 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-15 19:12:09 +00:00
Benjamin Kramer
a7b0cb7594 Remove all remaining uses of Value::getNameStr(). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144648 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-15 16:27:03 +00:00
Benjamin Kramer
aa5354c3ba Make headers standalone, move a virtual method out of line. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144536 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-14 17:22:45 +00:00
Daniel Dunbar
b8ebca83f4 build: Attempt to rectify inconsistencies between CMake and LLVMBuild versions of explicit dependencies. 
- The hope is that we have a tool/test to verify these are accurate (and tight) soon.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144444 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-12 02:10:57 +00:00
Eli Friedman
75f69e3a3d Make sure scalarrepl picks the correct alloca when it rewrites a bitcast. Fixes PR11353. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144442 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-12 02:07:50 +00:00
Daniel Dunbar
8396893fa5 LLVMBuild: Alphabetize required_libraries lists. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144416 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-11 22:59:23 +00:00
Eli Friedman
b80f778bd3 Get rid of an optimization in SCCP which appears to have many issues. Specifically, it doesn't handle many cases involving undef correctly, and it is missing other checks which 
lead to it trying to re-mark a value marked as a constant with a different value.  It also appears to trigger very rarely.

Fixes PR11357.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144352 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-11 01:16:15 +00:00
Pete Cooper
c7e5a6a2c6 Fixed bug in DeadStoreElimination commit r144239 
Size of data being pointed to wasn't always being checked so some small writes were killing big writes

Fixes <rdar://problem/10426753>


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144312 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-10 20:22:08 +00:00
Pete Cooper
5ccb0825ed DeadStoreElimination can now trim the size of a store if the end of the store is dead. 
Currently checks alignment and killing stores on a power of 2 boundary as this is likely
to trim the size of the earlier store without breaking large vector stores into scalar ones.

Fixes <rdar://problem/10140300>


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144239 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-09 23:07:35 +00:00
Pete Cooper
2d76a78462 LICM pass now understands invariant load metadata. Nothing generates this yet so it will currently never get used in real tests 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144107 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-08 19:30:00 +00:00
Pete Cooper
a29fc806fe InstCombine now optimizes vector udiv by power of 2 to shifts 
Fixes r8429


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144036 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-07 23:04:49 +00:00
Bill Wendling
ac101e5848 Make sure we don't insert instructions before a landingpad instruction. 
<rdar://problem/10405911>


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144000 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-07 19:38:34 +00:00
Nick Lewycky
336b88dac8 Do simple cross-block DSE when we encounter a free statement. Fixes PR11240. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143808 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-05 10:48:42 +00:00
Daniel Dunbar
28eb1c5217 Speculatively revert "DeadStoreElimination can now trim the size of a store if 
the end of it is dead.", which appears to break bootstrapping LLVM.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143668 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-04 00:48:26 +00:00
Daniel Dunbar
a3a2dfd4a2 build: Add initial cut at LLVMBuild.txt files. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143634 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-03 18:53:17 +00:00
Pete Cooper
2d32b86543 DeadStoreElimination can now trim the size of a store if the end of it is dead. 
Only currently done if the later store is writing to a power of 2 address or 
has the same alignment as the earlier store as then its likely to not break up
large stores into smaller ones

Fixes <rdar://problem/10140300>


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143630 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-03 18:01:56 +00:00
Andrew Trick
d3714b60b5 Rewrite LinearFunctionTestReplace to handle pointer-type IVs. 
We've been hitting asserts in this code due to the many supported
combintions of modes (iv-rewrite/no-iv-rewrite) and IV types. This
second rewrite of the code attempts to deal with these cases systematically.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143546 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-02 17:19:57 +00:00
Chandler Carruth
94dffd2bb0 Add parentheses to disambiguate the precedence of these operations and 
silence -Wparentheses.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143534 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-02 05:43:44 +00:00
Andrew Trick
3129da8d1a Broaden an assert to handle enable-iv-rewrite=true following r143183. 
Narrowest possible fix for PR11279.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143522 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-02 00:02:45 +00:00
Eli Friedman
049260d9e2 Make sure we use the right insertion point when instcombine replaces a PHI with another instruction. (Specifically, don't insert an arbitrary instruction before a PHI.) Fixes PR11275. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143437 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-01 04:49:29 +00:00
Devang Patel
2ad3f93b5f Add utility to append a function to the list of global constructors. 
Patch by Kostya Serebryany.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143405 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-10-31 23:58:51 +00:00
Benjamin Kramer
59e43bde28 SimplifyLibCalls: Use IRBuilder.CreateGlobalString when creating a string for printf->puts, which correctly sets the unnamed_addr bit on the resulting GlobalVariable. 
Fixes PR11264.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143289 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-10-29 19:43:31 +00:00
Andrew Trick
6f2dd7ebcf LFTR should avoid a type mismatch with null pointer IVs. 
Fixes rdar://10359193 Indvar LinearFunctionTestReplace assertion


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143183 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-10-28 03:45:11 +00:00
Eli Friedman
8ecde6cbf8 It is not safe to sink an alloca into a stacksave/stackrestore pair, so don't do that. <rdar://problem/10352360> 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143093 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-10-27 01:33:51 +00:00
Nick Lewycky
4a3935c27e A dead malloc, a free(NULL) and a free(undef) are all trivially dead 
instructions.

This doesn't introduce any optimizations we weren't doing before (except
potentially due to pass ordering issues), now passes will eliminate them sooner
as part of their own cleanups.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@142787 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-10-24 04:35:36 +00:00
Cameron Zwarich
90747e34e6 The element insertion code in scalar replacement doesn't handle incorrect 
element types, even though the element extraction code does. It is surprising
that this bug has been here for so long. Fixes <rdar://problem/10318778>.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@142740 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-10-23 07:02:10 +00:00
Nick Lewycky
4d882aae2a A non-escaping malloc in the entry block is not unlike an alloca. Do dead-store 
elimination on them too.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@142735 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-10-22 21:59:35 +00:00
Eli Friedman
4090e1ce91 Remap blockaddress correctly when inlining a function. Fixes PR10162. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@142684 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-10-21 20:45:19 +00:00
Eli Friedman
8d992f5c2c Minor simplification: use ShuffleVectorInst::getMaskValue instead of a more expensive helper. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@142672 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-10-21 19:11:34 +00:00
Eli Friedman
d2822e7572 Extend instcombine's shufflevector simplification to handle more cases where the input and output vectors have different sizes. Patch by Xiaoyi Guo. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@142671 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-10-21 19:06:29 +00:00
Eli Friedman
c66330504c Refactor code from inlining and globalopt that checks whether a function definition is unused, and enhance it so it can tell that functions which are only used by a blockaddress are in fact dead. This probably doesn't happen much on most code, but the Linux kernel's _THIS_IP_ can trigger this issue with blockaddress. (GlobalDCE can also handle the given tescase, but we only run that at -O3.) Found while looking at PR11180. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@142572 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-10-20 05:23:42 +00:00
Devang Patel
9be72d4394 Initialze ScalarEvalution dependency. 
Patch by Pranav Bhandarkar!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@142556 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-10-19 23:56:07 +00:00
Dan Gohman
a974beaa1f Teach the ARC optimizer about the !clang.arc.copy_on_escape metadata 
tag on objc_retainBlock calls, which indicates that they may be
optimized away. rdar://10211286.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@142298 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-10-17 22:53:25 +00:00
Bill Wendling
76f267df17 Add support for the Objective-C personality function to the instruction 
combining of the landingpad instruction. The ObjC personality function acts
almost identically to the C++ personality function. In particular, it uses
"null" as a "catch-all" value.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@142256 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-10-17 21:20:24 +00:00
Dan Gohman
90b8bcd33a Suppress partial retain+release elimination when there's a 
possibility that it will span multiple CFG diamonds/triangles which
could have different controlling predicates.  rdar://10282956


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@142222 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-10-17 18:48:25 +00:00
Bill Wendling
3c5e60994f Correct over-zealous removal of hack. 
Some code want to check that *any* call within a function has the 'returns
twice' attribute, not just that the current function has one.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@142221 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-10-17 18:43:40 +00:00