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2009-08-31Merge from mainline.Tanya Lattner
Rename Instruction::isIdenticalTo to Instruction::isIdenticalToWhenDefined, and introduce a new Instruction::isIdenticalTo which tests for full identity, including the SubclassOptionalData flags. Also, fix the Instruction::clone implementations to preserve the SubclassOptionalData flags. Finally, teach several optimizations how to handle SubclassOptionalData correctly, given these changes. This fixes the counterintuitive behavior of isIdenticalTo not comparing the full value, and clone not returning an identical clone, as well as some subtle bugs that could be caused by these. Thanks to Nick Lewycky for reporting this, and for an initial patch! git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_26@80553 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-19Fix up PHI nodes correctly in the presence of unreachable BBs, part two. AlsoNick Lewycky
delete a newed pointer, and improve readability a little bit. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79411 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-19Be more careful when modifying PHI nodes. Patch by Andre Tavares.Nick Lewycky
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79407 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-17Update comments to new-style syntax.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79263 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-17Don't crash on critical edge. Patch by Andre Tavares.Nick Lewycky
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79252 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-16Fix for PR3016: detect the tricky case, where there are Eli Friedman
unfoldable references to a PHI node in the block being folded, and disable the transformation in that case. The correct transformation of such PHI nodes depends on whether BB dominates Succ, and dominance is expensive to compute here. (Alternatively, it's possible to check whether any uses are live, but that's also essentially a dominance calculation. Another alternative is to use reg2mem, but it probably isn't a good idea to use that in simplifycfg.) Also, remove some incorrect code from CanPropagatePredecessorsForPHIs which is made unnecessary with this patch: it didn't consider the case where a PHI node in BB has multiple uses. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79174 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-15SSI construction should just go ahead and ignore instructions in unreachableNick Lewycky
blocks. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79132 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-13Actually privatize a IntegerTypes, and fix a few bugs exposed by this.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78955 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-13Push LLVMContexts through the IntegerType APIs.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78948 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-12Remove a bunch more now-unnecessary Context arguments.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78809 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-11Remove unnecessary casts.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78664 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-07Fix a bunch of namespace pollution.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78363 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-05Privatize the StructType table, which unfortunately involves routing ↵Owen Anderson
contexts through a number of APIs. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78258 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-31Move a few more APIs back to 2.5 forms. The only remaining ones left to ↵Owen Anderson
change back are metadata related, which I'm waiting on to avoid conflicting with Devang. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77721 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-30Move more code back to 2.5 APIs.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77635 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-30Twines: Don't allow implicit conversion from integers, this is too tricky.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77605 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-30Switch obvious clients to Twine instead of utostr (when they were already usingDaniel Dunbar
a Twine, e.g., for names). - I am a little ambivalent about this; we don't want the string conversion of utostr, but using overload '+' mixed with string and integer arguments is sketchy. On the other hand, this particular usage is something of an idiom. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77579 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-29Move types back to the 2.5 API.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77516 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-29Remove now unused Context variables.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77495 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-29Move ConstantExpr to 2.5 API.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77494 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-28Rename MDNode.h header. It defines MDnode and other metadata classes.Devang Patel
New name is Metadata.h. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77370 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-28Return ConstantVector to 2.5 API.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77366 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-28Change ConstantArray to 2.5 API.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77347 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-28Fix a small little typo.Mike Stump
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77289 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-27Fix a release-asserts warning. Debug functions should be marked used,Mike Stump
if there are no other uses. If people don't need this routine anymore, if should be deleted. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77274 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-27Avoid build warnings.Mike Stump
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77271 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-27Move ConstantStruct back to 2.5 API.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77266 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-27Do not seed mstadata into the value map.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77208 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-26Remove Value::getName{Start,End}, the last of the old Name APIs.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77152 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-25Remove Value::{isName, getNameRef}.Daniel Dunbar
Also, change MDString to use a StringRef. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77098 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-25Convert a few more uses of llvm/Support/Streams.h to raw_ostream.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77033 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-25Make AliasAnalysis and related classes useDan Gohman
getAnalysisIfAvailable<TargetData>(). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77028 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-25More migration to raw_ostream, the water has dried up around the iostream hole.Daniel Dunbar
- Some clients which used DOUT have moved to DEBUG. We are deprecating the "magic" DOUT behavior which avoided calling printing functions when the statement was disabled. In addition to being unnecessary magic, it had the downside of leaving code in -Asserts builds, and of hiding potentially unnecessary computations. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77019 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-24Revert the ConstantInt constructors back to their 2.5 forms where possible, ↵Owen Anderson
thanks to contexts-on-types. More to come. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77011 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-24AliasAnalysis wants sizes in address-units, not bits.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77009 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-24Move more to raw_ostream, provide support for writing MachineBasicBlock,Daniel Dunbar
LiveInterval, etc to raw_ostream. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76965 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-24Switch to getNameStr().Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76962 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-22Don't give a massive inlining cost bonus to available_externally Eli Friedman
functions with a single use; eliminating the single use may eliminate the function from the current module, but usually doesn't eliminate it from the final program. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76730 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-22Get rid of the Pass+Context magic.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76702 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-21Update CMake files.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76595 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-18add a fixmeChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76324 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-18Fix the inline cost calculation to take into account instructions Eli Friedman
which cannot be folded even if they have constant operands. Significantly helps if_spppsubr.c attached to PR4573. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76285 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-17Initialize another Context, in the hopes of unbreaking CBE.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76184 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-17Replace isTrapping with a new, similar method called Eli Friedman
isSafeToSpeculativelyExecute. The new method is a bit closer to what the callers actually care about in that it rejects more things callers don't want. It also adds more precise handling for integer division, and unifies code for analyzing the legality of a speculative load. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76150 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-16Move the ConstantInt uniquing table into LLVMContextImpl. This exposed a ↵Owen Anderson
number of issues in our current context-passing stuff, which is also fixed here git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76089 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-15Revert yesterday's change by removing the LLVMContext parameter to ↵Owen Anderson
AllocaInst and MallocInst. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75863 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-15Make makeLoopInvariant report whether it made any changes or not,Dan Gohman
and use this to simplify more code. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75722 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-14Move EVER MORE stuff over to LLVMContext.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75703 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-14llvm_unreachable->llvm_unreachable(0), LLVM_UNREACHABLE->llvm_unreachable.Torok Edwin
This adds location info for all llvm_unreachable calls (which is a macro now) in !NDEBUG builds. In NDEBUG builds location info and the message is off (it only prints "UREACHABLE executed"). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75640 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-14Update LoopSimplify and LoopUnswitch to use the new makeLoopInvariantDan Gohman
function. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75584 91177308-0d34-0410-b5e6-96231b3b80d8
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