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2010-02-05Teach SimplifyCFG about magic pointer constants.Jakob Stoklund Olesen
Weird code sometimes uses pointer constants other than null. This patch teaches SimplifyCFG to build switch instructions in those cases. Code like this: void f(const char *x) { if (!x) puts("null"); else if ((uintptr_t)x == 1) puts("one"); else if (x == (char*)2 || x == (char*)3) puts("two"); else if ((intptr_t)x == 4) puts("four"); else puts(x); } Now becomes a switch: define void @f(i8* %x) nounwind ssp { entry: %magicptr23 = ptrtoint i8* %x to i64 ; <i64> [#uses=1] switch i64 %magicptr23, label %if.else16 [ i64 0, label %if.then i64 1, label %if.then2 i64 2, label %if.then9 i64 3, label %if.then9 i64 4, label %if.then14 ] Note that LLVM's own DenseMap uses magic pointers. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95439 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-05Use a SmallSetVector instead of a SetVector; this code showed up as aDan Gohman
malloc caller in a profile. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95407 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-01Fix pr6198 by moving the isSized() check to an outer conditional.Bob Wilson
The testcase from pr6198 does not crash for me -- I don't know what's up with that -- so I'm not adding it to the tests. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94984 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-30Check alignment of loads when deciding whether it is safe to execute themBob Wilson
unconditionally. Besides checking the offset, also check that the underlying object is aligned as much as the load itself. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94875 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-29Use uint64_t instead of unsigned for offsets and sizes.Bob Wilson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94835 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-29Improve isSafeToLoadUnconditionally to recognize that GEPs with constantBob Wilson
indices are safe if the result is known to be within the bounds of the underlying object. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94829 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-29mem2reg erases the dbg.declare intrinsics that it converts to dbg.val intrinsicsVictor Hernandez
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94763 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-27Avoid creating redundant PHIs in SSAUpdater::GetValueInMiddleOfBlock.Bob Wilson
This was already being done in SSAUpdater::GetValueAtEndOfBlock so I've just changed SSAUpdater to check for existing PHIs in both places. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94690 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-27Don't bother with sprintf, just pass the Twine through.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94684 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-27some cleanups.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94649 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-27no need to check for nullChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94648 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-27When converting dbg.declare to dbg.value, attach promoted store's debug ↵Victor Hernandez
metadata to dbg.value git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94634 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-26Avoid extra calls to MD->getNumOperands()Victor Hernandez
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94618 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-26Switch AllocaDbgDeclares to SmallVector and don't leak DIFactoryVictor Hernandez
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94567 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-26In mem2reg, for all alloca/stores that get promoted where the alloca has an ↵Victor Hernandez
associated llvm.dbg.declare instrinsic, insert an llvm.dbg.var intrinsic before each store. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94493 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-25Revert r94260 until findDbgDeclare() is made more efficientVictor Hernandez
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94432 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-24make -fno-rtti the default unless a directory builds with REQUIRES_RTTI.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94378 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-23In mem2reg, for all alloca/stores that get promoted where the alloca has an ↵Victor Hernandez
associated llvm.dbg.declare instrinsic, insert an llvm.dbg.var intrinsic before each store git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94260 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-22Keep ignoring pointer-to-pointer bitcastsVictor Hernandez
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94194 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-22Stop building RTTI information for *most* llvm libraries. NotableChris Lattner
missing ones are libsupport, libsystem and libvmcore. libvmcore is currently blocked on bugpoint, which uses EH. Once it stops using EH, we can switch it off. This #if 0's out 3 unit tests, because gtest requires RTTI information. Suggestions welcome on how to fix this. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94164 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-21No need to look through bitcasts for DbgInfoIntrinsicVictor Hernandez
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94114 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-21DbgInfoIntrinsic no longer appear in an instruction's use listVictor Hernandez
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94113 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-21DbgInfoIntrinsics no longer appear in an instruction's use list; so clean up ↵Victor Hernandez
looking for them in use iterations and remove OnlyUsedByDbgInfoIntrinsics() git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94111 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-21It turns out that this #include is needed because otherwiseChris Lattner
ValueMapper.cpp ends up calling an out of line __ZNK4llvm12PATypeHolder3getEv, which is a template and llvm-config determines arbitrarily to use the one in libipo. This sucks, but keeping the #include is a reasonable workaround. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94103 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-21unbreak the build, apparently without this transformutils starts depending ↵Chris Lattner
on libipa? git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94102 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-21tidy upChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94101 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-21Don't need to include IntrinsicInst.h any moreVictor Hernandez
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94092 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-21No need to map NULL operands of metadataVictor Hernandez
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94091 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-20Switch Elts from vector to SmallVectorVictor Hernandez
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93989 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-20Map operands of all function-local metadata, not just metadata passed to ↵Victor Hernandez
llvm.dbg.declare intrinsics git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93979 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-18While mapping llvm.dbg.declare intrinsic manually map its operand, if possible,Devang Patel
because it points to an alloca instruction through metadata. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93757 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-15Fix a comment typo.Bob Wilson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93560 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-12add a helper function.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93251 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-10Fix nondeterministic behavior.Julien Lerouge
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93093 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-09Fix nondeterministic behavior.Julien Lerouge
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93038 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-05Convert a ton of simple integer type equality tests to the new predicate.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92760 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-05Nick Lewycky pointed out that this code makes changes unconditionally.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92739 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-05Use do+while instead of while for loops which obviously have aDan Gohman
non-zero trip count. Use SmallVector's pop_back_val(). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92734 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-05Make RecursivelyDeleteTriviallyDeadInstructions,Dan Gohman
RecursivelyDeleteDeadPHINode, and DeleteDeadPHIs return a flag indicating whether they made any changes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92732 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-05Avoid going through the LLVMContext for type equality where it's safe to ↵Benjamin Kramer
dereference the type pointer. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92726 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-05Change errs() to dbgs().David Greene
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92606 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-05Change errs() to dbgs().David Greene
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92605 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-05Change errs() to dbgs().David Greene
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92604 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-05Change errs() to dbgs().David Greene
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92603 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-05Change errs() to dbgs().David Greene
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92602 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-05Change errs() to dbgs().David Greene
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92601 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-05Change errs() to dbgs().David Greene
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92600 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-05Change errs() to dbgs().David Greene
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92599 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-05Remove dead debug info intrinsics.Devang Patel
Intrinsic::dbg_stoppoint Intrinsic::dbg_region_start Intrinsic::dbg_region_end Intrinsic::dbg_func_start AutoUpgrade simply ignores these intrinsics now. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92557 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-31fix Analysis/DebugInfo.h to not include Metadata.h. Do thisChris Lattner
by moving one method out of line and eliminating redundant checks from other methods. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92337 91177308-0d34-0410-b5e6-96231b3b80d8
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