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2011-11-28Add a missing safety check to ProcessUGT_ADDCST_ADD. Fixes PR11438.Eli Friedman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145316 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-28Remove the temporary flag -disable-unroll-scev and dead code.Andrew Trick
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
2011-11-27Place the "cfg checksum" around a test. This was recently added in April 2011 toNick Lewycky
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
2011-11-26Move code into anonymous namespaces.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145154 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-23[asan] do not instrument threadlocal globals, this is buggyKostya Serebryany
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145092 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-20Refactor code to use new attribute getters on CallSite for NoCapture and ByVal.Nick Lewycky
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
2011-11-18[asan] workaround for reg alloc bug 11395: don't instrument functions with ↵Kostya Serebryany
large chunks of inline assembler git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144962 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-17quick fix: remove GlobalVariable::GlobalVariable mistakenly commited at ↵Kostya Serebryany
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
2011-11-17Fix an overly general check in SimplifyIndvar to handle useless phi cycles.Andrew Trick
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
2011-11-17fall back to explicit list of allowed linkages when instrumenting globals in ↵Kostya Serebryany
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
2011-11-17Add support for custom names for library functions in TargetLibraryInfo. ↵Eli Friedman
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
2011-11-16Merge isObjectPointerWithTrustworthySize with getPointerSize. Use it whenNick Lewycky
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
2011-11-16AddressSanitizer, first commit (compiler module only)Kostya Serebryany
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144758 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-16test commit to verify that commit access works (added blank line)Kostya Serebryany
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144748 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-15Fix MSVC warnings by adding a cast. Nadav Rotem
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144721 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-15StringRefize and simplify.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144675 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-15Remove all remaining uses of Value::getNameStr().Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144648 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-14Make headers standalone, move a virtual method out of line.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144536 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-12build: Attempt to rectify inconsistencies between CMake and LLVMBuild ↵Daniel Dunbar
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
2011-11-12Make sure scalarrepl picks the correct alloca when it rewrites a bitcast. ↵Eli Friedman
Fixes PR11353. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144442 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-11LLVMBuild: Alphabetize required_libraries lists.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144416 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-11Get rid of an optimization in SCCP which appears to have many issues. ↵Eli Friedman
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
2011-11-10Fixed bug in DeadStoreElimination commit r144239Pete Cooper
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
2011-11-09DeadStoreElimination can now trim the size of a store if the end of the ↵Pete Cooper
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
2011-11-08LICM pass now understands invariant load metadata. Nothing generates this ↵Pete Cooper
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
2011-11-07InstCombine now optimizes vector udiv by power of 2 to shiftsPete Cooper
Fixes r8429 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144036 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-07Make sure we don't insert instructions before a landingpad instruction.Bill Wendling
<rdar://problem/10405911> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144000 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-05Do simple cross-block DSE when we encounter a free statement. Fixes PR11240.Nick Lewycky
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143808 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-04Speculatively revert "DeadStoreElimination can now trim the size of a store ifDaniel Dunbar
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
2011-11-03build: Add initial cut at LLVMBuild.txt files.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143634 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-03DeadStoreElimination can now trim the size of a store if the end of it is dead.Pete Cooper
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
2011-11-02Rewrite LinearFunctionTestReplace to handle pointer-type IVs.Andrew Trick
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
2011-11-02Add parentheses to disambiguate the precedence of these operations andChandler Carruth
silence -Wparentheses. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143534 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-02Broaden an assert to handle enable-iv-rewrite=true following r143183.Andrew Trick
Narrowest possible fix for PR11279. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143522 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-01Make sure we use the right insertion point when instcombine replaces a PHI ↵Eli Friedman
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
2011-10-31Add utility to append a function to the list of global constructors. Devang Patel
Patch by Kostya Serebryany. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143405 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-29SimplifyLibCalls: Use IRBuilder.CreateGlobalString when creating a string ↵Benjamin Kramer
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
2011-10-28LFTR should avoid a type mismatch with null pointer IVs.Andrew Trick
Fixes rdar://10359193 Indvar LinearFunctionTestReplace assertion git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143183 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-27It is not safe to sink an alloca into a stacksave/stackrestore pair, so ↵Eli Friedman
don't do that. <rdar://problem/10352360> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143093 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-24A dead malloc, a free(NULL) and a free(undef) are all trivially deadNick Lewycky
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
2011-10-23The element insertion code in scalar replacement doesn't handle incorrectCameron Zwarich
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
2011-10-22A non-escaping malloc in the entry block is not unlike an alloca. Do dead-storeNick Lewycky
elimination on them too. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@142735 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-21Remap blockaddress correctly when inlining a function. Fixes PR10162.Eli Friedman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@142684 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-21Minor simplification: use ShuffleVectorInst::getMaskValue instead of a more ↵Eli Friedman
expensive helper. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@142672 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-21Extend instcombine's shufflevector simplification to handle more cases where ↵Eli Friedman
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
2011-10-20Refactor code from inlining and globalopt that checks whether a function ↵Eli Friedman
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
2011-10-19Initialze ScalarEvalution dependency.Devang Patel
Patch by Pranav Bhandarkar! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@142556 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-17Teach the ARC optimizer about the !clang.arc.copy_on_escape metadataDan Gohman
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
2011-10-17Add support for the Objective-C personality function to the instructionBill Wendling
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
2011-10-17Suppress partial retain+release elimination when there's aDan Gohman
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
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