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8479 Commits

Author SHA1 Message Date
Kostya Serebryany
25a8b809a0 [asan] call __asan_init from .preinit_array. This simplifies __asan_init vs malloc chicken-and-egg situation on Android and probably on other flavours of Linux. Patch by eugenis@google.com. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146284 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-12-09 22:09:32 +00:00
Jakub Staszak
2fac1d5d61 SplitBlockPredecessors uses ArrayRef instead of Data and Size. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146277 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-12-09 21:19:53 +00:00
Andrew Trick
5d73448bb7 Add -unroll-runtime for unrolling loops with run-time trip counts. 
Patch by Brendon Cahoon!

This extends the existing LoopUnroll and LoopUnrollPass. Brendon
measured no regressions in the llvm test suite with -unroll-runtime
enabled. This implementation works by using the existing loop
unrolling code to unroll the loop by a power-of-two (default 8). It
generates an if-then-else sequence of code prior to the loop to
execute the extra iterations before entering the unrolled loop.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146245 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-12-09 06:19:40 +00:00
Nick Lewycky
c9b98ad7a7 Fix infinite loop in DSE when deleting a free in a reachable loop that's also 
trivially infinite.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146197 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-12-08 22:36:35 +00:00
Duncan Sands
0ea3a0c236 Remove unused include. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146037 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-12-07 17:18:31 +00:00
Benjamin Kramer
88c09143b6 Simplify common predecessor finding. 
- Walking over pred_begin/pred_end is an expensive operation.
- PHINodes contain a value for each predecessor anyway.
- While it may look like we used to save a few iterations with the set,
  be aware that getIncomingValueForBlock does a linear search on
  the values of the phi node.
- Another -5% on ARMDisassembler.cpp (Release build). This was the last
  entry in the profile that was obviously wasting time.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145937 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-12-06 16:14:29 +00:00
Benjamin Kramer
85dadecbd6 Push StringRefs through the metadata interface. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145934 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-12-06 11:50:26 +00:00
Andrew Trick
8a5d792944 LSR: prune undesirable formulae early. 
It's always good to prune early, but formulae that are unsatisfactory
in their own right need to be removed before running any other pruning
heuristics. We easily avoid generating such formulae, but we need them
as an intermediate basis for forming other good formulae.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145906 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-12-06 03:13:31 +00:00
Nick Lewycky
7c06741004 Expose a switch for the new gcov format. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145880 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-12-06 00:29:13 +00:00
Chad Rosier
a4b6fd5be0 Update comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145866 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-12-05 22:53:09 +00:00
Chad Rosier
d8bd26ee24 Make the MemCpyOptimizer a bit more aggressive. I can't think of a scenerio 
where this would be bad as the backend shouldn't have a problem inlining small
memcpys.
rdar://10510150

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145865 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-12-05 22:37:00 +00:00
Benjamin Kramer
4da7f90b17 Add a little heuristic to Value::isUsedInBasicBlock to speed it up for small basic blocks. 
- Calling getUser in a loop is much more expensive than iterating over a few instructions.
- Use it instead of the open-coded loop in AddrModeMatcher.
- 5% speedup on ARMDisassembler.cpp Release builds.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145810 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-12-05 17:23:27 +00:00
Nadav Rotem
1608769abe Add support for vectors of pointers. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145801 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-12-05 06:29:09 +00:00
Pete Cooper
de2e27cc52 Fixed deadstoreelimination bug where negative indices were incorrectly causing the optimisation to occur 
Turns out long long + unsigned long long is unsigned.  Doh!

Fixes http://llvm.org/bugs/show_bug.cgi?id=11455

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145731 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-12-03 00:04:30 +00:00
Benjamin Kramer
30fe1ae20d Fix quadratic behavior in InlineFunction by fetching the personality function of the callee once and not for every invoke in the caller. 
The callee is usually smaller than the caller, too. This reduces the compile
time of ARMDisassembler.cpp by 32% (Release build). It still takes ages to
compile though.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145690 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-12-02 18:37:31 +00:00
Chad Rosier
aab8e28d5e Fix a few more places where TargetData/TargetLibraryInfo is not being passed. 
Add FIXMEs to places that are non-trivial to fix.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145661 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-12-02 01:26:24 +00:00
Chad Rosier
00737bdb48 Last bit of TargetLibraryInfo propagation. Also fixed a case for TargetData 
where it appeared beneficial to pass.
More of rdar://10500969

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145630 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-12-01 21:29:16 +00:00
Pete Cooper
165695d261 Improved fix for abs(val) != 0 to check other similar case. Also fixed style issues and confusing comment 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145618 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-12-01 19:13:26 +00:00
Kostya Serebryany
cc1d856d8e [asan] two minor fixes: use UnreachableInst after the neverreturn function call; use report_fatal_error when blacklist file can not be found 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145611 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-12-01 18:54:53 +00:00
Pete Cooper
65a6b57c33 Added instcombine pattern to spot comparing -val or val against 0. 
(val != 0) == (-val != 0) so "abs(val) != 0" becomes "val != 0"

Fixes <rdar://problem/10482509>


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145563 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-12-01 03:58:40 +00:00
Chad Rosier
618c1dbd29 Propagate TargetLibraryInfo throughout ConstantFolding.cpp and 
InstructionSimplify.cpp.  Other fixups as needed.
Part of rdar://10500969

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145559 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-12-01 03:08:23 +00:00
Kostya Serebryany
af65a8c54b make asan work at -O0, llvm part. Patch by glider@google.com 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145530 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-30 22:19:26 +00:00
Eli Friedman
3dad610aaa Make GlobalMerge honor the preferred alignment on globals without an explicitly specified alignment. 
<rdar://problem/10497732>.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145523 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-30 21:54:15 +00:00
Chad Rosier
caebb1e00b Whitespace. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145470 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-30 01:59:59 +00:00
Chad Rosier
3d925d24e8 Add support for sqrt, sqrtl, and sqrtf in TargetLibraryInfo. Disable 
(fptrunc (sqrt (fpext x))) -> (sqrtf x) transformation if -fno-builtin is 
specified.
rdar://10466410

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145460 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-29 23:57:10 +00:00
Stepan Dyatkovskiy
be4c844648 Potential bug in RewriteLoopBodyWithConditionConstant: use iterator should not be changed inside the uses enumeration loop. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145432 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-29 20:34:39 +00:00
Daniel Dunbar
d782bae970 build/CMake: Finish removal of add_llvm_library_dependencies. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145420 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-29 19:25:30 +00:00
Duncan Sands
d3a38ccfbb Fix a theoretical problem (not seen in the wild): if different instances of a 
weak variable are compiled by different compilers, such as GCC and LLVM, while
LLVM may increase the alignment to the preferred alignment there is no reason to
think that GCC will use anything more than the ABI alignment.  Since it is the
GCC version that might end up in the final program (as the linkage is weak), it
is wrong to increase the alignment of loads from the global up to the preferred
alignment as the alignment might only be the ABI alignment.

Increasing alignment up to the ABI alignment might be OK, but I'm not totally
convinced that it is.  It seems better to just leave the alignment of weak
globals alone.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145413 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-29 18:26:38 +00:00
Andrew Trick
ecb35ece5c SCEV fix. In general, Add/Mul expressions should not inherit NSW/NUW. 
This reverts r139450, fixes r139453, and adds much needed comments and a
unit test.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145367 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-29 02:16:38 +00:00
Eli Friedman
ba78c883d4 Zap some completely ridiculous code. There's probably a miscompile here, but I don't really want to try to write a testcase involving an invoke returning a pointer to a varargs function... 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145347 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-29 01:18:23 +00:00
Eli Friedman
54b92113e2 Add a missing safety check to ProcessUGT_ADDCST_ADD. Fixes PR11438. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145316 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-28 23:32:19 +00:00
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