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2010-03-23 Merge 98977 from mainline.Tanya Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_27@99292 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-23Merge r98845 from mainline.Tanya Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_27@99291 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-11Merge 98203 from mainline.Tanya Lattner
fix PR6533 by updating the br(xor) code to remember the case when it looked past a trunc. git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_27@98306 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-08Revert r97917, which was causing Clang Debug self-host failures.Douglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97932 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-07Roll r97906 forward again, without double-deleting CompileUnit::IndexTyDie.Jeffrey Yasskin
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97917 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-07Use Other as a sentinel instead of iAny.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97914 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-07_2_ gcc crashes, ah, ah, ah...Jeffrey Yasskin
(Rolling back r97906.) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97909 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-07Avoid leaking CompileUnits and DbgScopes from DwarfDebug. Leaks found by ↵Jeffrey Yasskin
Valgrind! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97906 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-07tidy upChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97895 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-06Don't update physical register def.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97861 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-06Add some new bits of debug info handling. NoDale Johannesen
functional change yet. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97855 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-06Reapply r97778 and r97779, enabled only for unsigned i64 to f64Dan Gohman
conversions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97854 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-05Don't emit global symbols into the (__TEXT,__ustring) section on Darwin. ThisCharles Davis
is a workaround for <rdar://problem/7672401/> (which I filed). This let's us build Wine on Darwin, and it gets the Qt build there a little bit further (so Doug says). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97845 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-05Better handling of dead super registers in LiveVariables. We used to do this:Jakob Stoklund Olesen
CALL ... %RAX<imp-def> ... [not using %RAX] %EAX = ..., %RAX<imp-use, kill> RET %EAX<imp-use,kill> Now we do this: CALL ... %RAX<imp-def, dead> ... [not using %RAX] %EAX = ... RET %EAX<imp-use,kill> By not artificially keeping %RAX alive, we lower register pressure a bit. The correct number of instructions for 2008-08-05-SpillerBug.ll is obviously 55, anybody can see that. Sheesh. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97838 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-05We don't really care about correct register liveness information after theJakob Stoklund Olesen
post-ra scheduler has run. Disable the verifier checks that late in the game. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97837 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-05Avoid creating bad PHI instructions when BR is being const-folded.Jakob Stoklund Olesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97836 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-05Fix PR6497, a bug where we'd fold a load into an addcChris Lattner
node which has a flag. That flag in turn was used by an already-selected adde which turned into an ADC32ri8 which used a selected load which was chained to the load we folded. This flag use caused us to form a cycle. Fix this by not ignoring chains in IsLegalToFold even in cases where the isel thinks it can. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97791 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-05inline a small function with one call site.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97789 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-05Revert r97778 and r97779. They're somehow breaking llvm-gcc builds.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97781 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-05Fix these constants to be more portable.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97779 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-05Rewrite i64-to-f64 conversion using an algorithm which handlesDan Gohman
rounding correctly. This implementation is a generalization of the x86_64 code in compiler-rt. This fixes rdar://7683708. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97778 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-05Fix some more places where dbg_value affected codegen.Dale Johannesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97765 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-04Fix memcheck-found leaks: one false positive from using new[], and one trueJeffrey Yasskin
positive where pointers would be leaked on llvm_shutdown. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97759 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-04For SJLJ exception handling, make sure that all calls that are not markedJim Grosbach
as nounwind are marked with a -1 call-site value. This is necessary to, for example, correctly process exceptions thrown from within an "unexpected" execption handler (see SingleSource/Regression/C++/EH/expection_spec_test.cpp). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97757 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-04Run machine licm before machine cse to avoid messing up licm opportunities.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97752 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-04Avoid cse load instructions unless they are known to be invariant loads.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97747 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-04add a statistic for # times fastisel fails.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97738 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-04Fix a typo Duncan noticed.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97735 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-04Rename -machine-cse to -enable-machine-cse.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97713 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-04Look ahead a bit to determine if a physical register def that is not marked ↵Evan Cheng
dead is really alive. This is necessary to catch a lot of common cse opportunities for targets like x86. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97706 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-04change the new isel matcher to emit ComplexPattern matchesChris Lattner
as the very last thing before node emission. This should dramatically reduce the number of times we do 'MatchAddress' on X86, speeding up compile time. This also improves comments in the tables and shrinks the table a bit, now down to 80506 bytes for x86. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97703 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-04Fix more code to work properly with vector operands. Based onDan Gohman
a patch my Micah Villmow for PR6465. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97692 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-04inline CannotYetSelectIntrinsic into CannotYetSelect and simplify.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97690 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-03Fix a logic error. An instruction that has a live physical register def ↵Evan Cheng
cannot be CSE'ed, but it *can* be used to replace a common subexpression. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97688 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-03Remove PHINodeTraits and use MachineInstrExpressionTrait instead.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97687 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-03Move MachineInstrExpressionTrait::getHashValue() out of line so it can skip ↵Evan Cheng
over only virtual register defs. This matches what isEqual() is doing. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97680 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-03Re-apply r97667 but with a little bit of thought put into the patch. This ↵Evan Cheng
implements a special DenseMapInfo trait for DenseMap<MachineInstr*> that compare the value of the MachineInstr rather than the pointer value. Since the hashing and equality test functions ignore defs it's useful for doing CSE kind optimization. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97678 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-03Revert 97667. It broke a bunch of tests.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97673 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-03Fix funky indentation and add comments.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97670 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-03Move DenseMapInfo for MachineInstr* to MachineInstr.hEvan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97667 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-03Fix a bug in SelectionDAG's ReplaceAllUsesWith in the case whereDan Gohman
CSE and recursive RAUW calls delete a node from the use list, invalidating the use list iterator. There's currently no known way to reproduce this in an unmodified LLVM, however there's no fundamental reason why a SelectionDAG couldn't be formed which would trigger this case. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97665 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-03Machine CSE work in progress. It's doing some CSE now. But implicit def of ↵Evan Cheng
physical registers are getting in the way. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97664 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-03Add MachineRegisterInfo::hasOneUse and hasOneNonDBGUse.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97663 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-03Revert...Bill Wendling
--- Reverse-merging r97592 into '.': U lib/CodeGen/TargetLoweringObjectFileImpl.cpp git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97657 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-03add some of the more obscure predicate types to the Chris Lattner
Scope accelerator. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97652 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-03speed up scope node processing: if the first element of a scopeChris Lattner
entry we're about to process is obviously going to fail, don't bother pushing a scope only to have it immediately be popped. This avoids a lot of scope stack traffic in common cases. Unfortunately, this requires duplicating some of the predicate dispatch. To avoid duplicating the actual logic I pulled each predicate out to its own static function which gets used in both places. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97651 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-03introduce a new SwitchTypeMatcher node (which is analogous toChris Lattner
SwitchOpcodeMatcher) and have DAGISelMatcherOpt form it. This speeds up selection, particularly for X86 which has lots of variants of instructions with only type differences. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97645 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-03Work in progress. Finding some cse now.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97635 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-03Use APInt instead of zext value.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97631 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-03- Change MachineInstr::isIdenticalTo to take a new option that determines ↵Evan Cheng
whether it should skip checking defs or at least virtual register defs. This subsumes part of the TargetInstrInfo::isIdentical functionality. - Eliminate TargetInstrInfo::isIdentical and replace it with produceSameValue. In the default case, produceSameValue just checks whether two machine instructions are identical (except for virtual register defs). But targets may override it to check for unusual cases (e.g. ARM pic loads from constant pools). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97628 91177308-0d34-0410-b5e6-96231b3b80d8
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