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* Add an option to always emit realignment code for a particular module.Eric Christopher2010-08-051-1/+34
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110404 91177308-0d34-0410-b5e6-96231b3b80d8
* Be more aggressive about removing joined physreg copies.Jakob Stoklund Olesen2010-08-051-3/+10
| | | | | | | When a joined COPY changes subreg liveness, we keep it around as a KILL, otherwise it is safe to delete. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110403 91177308-0d34-0410-b5e6-96231b3b80d8
* Don't verify LiveVariables if LiveIntervals is available.Jakob Stoklund Olesen2010-08-051-12/+13
| | | | | | | | LiveVariables becomes horribly wrong while the coalescer is running, but the analysis is not zapped until after the coalescer pass has run. This causes tons of false reports when calling verify form the coalescer. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110402 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix 80-column violations.Dan Gohman2010-08-051-6/+6
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110401 91177308-0d34-0410-b5e6-96231b3b80d8
* Don't use PassInfo* as a type identifier for passes. Instead, use the ↵Owen Anderson2010-08-05172-328/+343
| | | | | | | | | address of the static ID member as the sole unique type identifier. Clean up APIs related to this change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110396 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove IntrWriteMem, as it's the default. Rename IntrWriteArgMemDan Gohman2010-08-051-9/+3
| | | | | | | to IntrReadWriteArgMem, as it's for reading as well as writing. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110395 91177308-0d34-0410-b5e6-96231b3b80d8
* Support very basic (doesn't include ABI support in the front-end, varags, ↵Bruno Cardoso Lopes2010-08-052-4/+30
| | | | | | ...) 256-bit argument passing and return for AVX git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110394 91177308-0d34-0410-b5e6-96231b3b80d8
* Implement AccessesArguments checking in the two-callsite formDan Gohman2010-08-051-2/+32
| | | | | | | | of BasicAA::getModRefInfo. This allows BasicAA to say that two memset calls to non-aliasing memory locations don't interfere. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110393 91177308-0d34-0410-b5e6-96231b3b80d8
* Yes, we can do better, but this is not the place for it.Dan Gohman2010-08-051-1/+0
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110391 91177308-0d34-0410-b5e6-96231b3b80d8
* Add the beginnings of infrastructure for range tracking.Owen Anderson2010-08-051-6/+60
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110388 91177308-0d34-0410-b5e6-96231b3b80d8
* Add basic verification of LiveIntervals.Jakob Stoklund Olesen2010-08-051-0/+59
| | | | | | | | | | | | | | We verify that the LiveInterval is live at uses and defs, and that all instructions have a SlotIndex. Stuff we don't check yet: - Is the LiveInterval minimal? - Do all defs correspond to instructions or phis? - Do all defs dominate all their live ranges? - Are all live ranges continually reachable from their def? git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110386 91177308-0d34-0410-b5e6-96231b3b80d8
* Give JumpThreading+LVI a long-form cl::opt so that it's easier to toggle the ↵Owen Anderson2010-08-051-1/+4
| | | | | | default. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110384 91177308-0d34-0410-b5e6-96231b3b80d8
* Split the tag and value members of LVILatticeVal in preparation for ↵Owen Anderson2010-08-051-14/+14
| | | | | | expanding the lattice to something that won't fit in two bits. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110383 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix memdep's code for reasoning about dependences between two calls. A RefDan Gohman2010-08-052-20/+14
| | | | | | | | | | | response from getModRefInfo is not useful here. Instead, check for identical calls only in the NoModRef case. Reapply r110270, and strengthen it to compensate for the memdep changes. When both calls are readonly, there is no dependence between them. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110382 91177308-0d34-0410-b5e6-96231b3b80d8
* remove the private hack from CallInst, it was not supposed to hit the branch ↵Gabor Greif2010-08-051-1/+1
| | | | | | | | | anyway as a positive consequence the CallSite::getCallee() methods now can be rewritten to be a bit more efficient git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110380 91177308-0d34-0410-b5e6-96231b3b80d8
* Handle the memory barrier pseudo that goes to nothing for the JIT.Eric Christopher2010-08-051-1/+7
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110371 91177308-0d34-0410-b5e6-96231b3b80d8
* Set hasSideEffects on the 64-bit no-sse memory barrier.Eric Christopher2010-08-051-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110369 91177308-0d34-0410-b5e6-96231b3b80d8
* For local variables in functions with a frame pointer, use FP as a baseJim Grosbach2010-08-052-18/+39
| | | | | | | | | | | register for local access when it's closer to the stack slot being refererenced than the stack pointer. Make sure to take into account any argument frame SP adjustments that are in affect at the time. rdar://8256090 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110366 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix indentation.Bob Wilson2010-08-051-6/+6
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110363 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove double-def checking from MachineVerifier, so a register does not have toJakob Stoklund Olesen2010-08-052-89/+18
| | | | | | | | | | be killed before being redefined. These checks are usually disabled, and usually fail when enabled. We de facto allow live registers to be redefined without a kill, the corresponding assertions in RegScavenger were removed long ago. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110362 91177308-0d34-0410-b5e6-96231b3b80d8
* Add an ARM RSCrr instruction for disassembly only.Bob Wilson2010-08-051-0/+8
| | | | | | | Partial fix for PR7792. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110361 91177308-0d34-0410-b5e6-96231b3b80d8
* Be a little bit more specific about target for the memory barrierEric Christopher2010-08-052-2/+4
| | | | | | | instructions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110360 91177308-0d34-0410-b5e6-96231b3b80d8
* Handle the pseudo in MCInstLower.Eric Christopher2010-08-051-0/+6
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110359 91177308-0d34-0410-b5e6-96231b3b80d8
* Add an ARM RSBrr instruction for disassembly only.Bob Wilson2010-08-051-1/+9
| | | | | | | Partial fix for PR7792. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110358 91177308-0d34-0410-b5e6-96231b3b80d8
* Avoid using a live std::multimap iterator while editing the map. It looks likeJakob Stoklund Olesen2010-08-051-7/+13
| | | | | | | we sometimes compare singular iterators, reported by ENABLE_EXPENSIVE_CHECKS. This fixes PR7825. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110355 91177308-0d34-0410-b5e6-96231b3b80d8
* Silence a GCC warning about && and || without explicit parentheses. ThisChandler Carruth2010-08-051-3/+3
| | | | | | | | preserves the existing behavior, as it seems a concious choice to allow RS to be null and BigStack marked true. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110307 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert r110270 for now. It appears to uncover a memdep bug.Dan Gohman2010-08-051-2/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110293 91177308-0d34-0410-b5e6-96231b3b80d8
* ARM "rrx" shift operands do not have an immediate. PR7790.Bob Wilson2010-08-052-24/+18
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110292 91177308-0d34-0410-b5e6-96231b3b80d8
* The trouble with testing for "ModRef" and "NoModRef" is thatDan Gohman2010-08-041-6/+6
| | | | | | | | one is a suffix of the other, and FileCheck accepts superstrings. Adjust the output to avoid this problem. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110280 91177308-0d34-0410-b5e6-96231b3b80d8
* The lower invoke pass needs to have unreachable code elimination run after itBill Wendling2010-08-041-2/+4
| | | | | | | because it could create such things. This fixes a MingW buildbot test failure. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110279 91177308-0d34-0410-b5e6-96231b3b80d8
* Make x86-64 membarriers work without sse and clean up some of theEric Christopher2010-08-043-4/+14
| | | | | | | uses. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110274 91177308-0d34-0410-b5e6-96231b3b80d8
* The two-callsite form of AliasAnalysis::getModRefInfo is documentedDan Gohman2010-08-042-2/+34
| | | | | | | | | | | to return Ref if the left callsite only reads memory read or written by the right callsite; fix BasicAliasAnalysis to implement this. Add AliasAnalysisEvaluator support for testing the two-callsite form of getModRefInfo. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110270 91177308-0d34-0410-b5e6-96231b3b80d8
* and back in. false alarm on the tests from another unrelated local change.Jim Grosbach2010-08-041-2/+7
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110269 91177308-0d34-0410-b5e6-96231b3b80d8
* PR7814: Truncates cannot be ignored for signed comparisons.Eli Friedman2010-08-041-1/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110268 91177308-0d34-0410-b5e6-96231b3b80d8
* Implement target specific getDebugValueLocation().Devang Patel2010-08-041-0/+13
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110267 91177308-0d34-0410-b5e6-96231b3b80d8
* Coalesce stack slot accesses that arise when spilling both sides of a COPY.Jakob Stoklund Olesen2010-08-041-0/+23
| | | | | | | | | This helps avoid silly code: %R0<def = LOAD <fi#5> STORE <fi#5>, %R0<kill> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110266 91177308-0d34-0410-b5e6-96231b3b80d8
* oops. revert for a moment to clean up tests first.Jim Grosbach2010-08-041-7/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110259 91177308-0d34-0410-b5e6-96231b3b80d8
* Reserve a stack slot if the function adjusts the stack but doesn'tJim Grosbach2010-08-041-2/+7
| | | | | | | | | | | simplify the call frame pseudo instructions. In that situation, the calculations for estimating the stack size will be way off, leading to not having an emergency spill slot when we need one. It should be possible to be more precise about tracking the adjustment values, but not really necessary for correctness. Upcoming cleanups for PEI in general will render that moot. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110258 91177308-0d34-0410-b5e6-96231b3b80d8
* Checkpoint SplitKit progress.Jakob Stoklund Olesen2010-08-043-86/+223
| | | | | | | We are now at a point where we can split around simple single-entry, single-exit loops, although still with some bugs. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110257 91177308-0d34-0410-b5e6-96231b3b80d8
* Implement target specific getDebugValueLocation().Devang Patel2010-08-041-0/+14
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110256 91177308-0d34-0410-b5e6-96231b3b80d8
* Use location entry only of the location described by DBG_VALUE is valid.Devang Patel2010-08-041-3/+6
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110255 91177308-0d34-0410-b5e6-96231b3b80d8
* The EH prepare passes really want to be the last passes run before code-gen.Bill Wendling2010-08-041-5/+5
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110248 91177308-0d34-0410-b5e6-96231b3b80d8
* Use indirect calls in PowerPC JIT.Torok Edwin2010-08-043-10/+31
| | | | | | | | | | See PR5201. There is no way to know if direct calls will be within the allowed range for BL. Hence emit all calls as indirect when in JIT mode. Without this long-running applications will fail to JIT on PowerPC with a relocation failure. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110246 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix typo in comment.Devang Patel2010-08-041-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110244 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix a minor bug which resulted in intermediate calculationsDan Gohman2010-08-041-1/+1
| | | | | | | using wider types than are necessary. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110241 91177308-0d34-0410-b5e6-96231b3b80d8
* Change this llvm_unreachable to report_fatal_error, since it canDan Gohman2010-08-041-4/+11
| | | | | | | be triggered by valid, if dubious, IR. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110240 91177308-0d34-0410-b5e6-96231b3b80d8
* While spilling live registers at the end of block check whether they are ↵Devang Patel2010-08-041-1/+24
| | | | | | used by DBG_VALUE machine instructions or not. If a spilled register is used by DBG_VALUE machine instruction then insert a new DBG_VALUE machine instruction to encode variable's new location on stack. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110235 91177308-0d34-0410-b5e6-96231b3b80d8
* If a variable is spilled by code generator then use DW_OP_fbreg to describe ↵Devang Patel2010-08-041-10/+35
| | | | | | its location on stack. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110234 91177308-0d34-0410-b5e6-96231b3b80d8
* Experiments show that we can safely increase our unrolling threshold without ↵Owen Anderson2010-08-041-1/+1
| | | | | | | | | unduly impacting code size, particularly since unrolling is not enabled at -Os. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110233 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove switch for disabling ARM tail calls. TheyDale Johannesen2010-08-041-9/+0
| | | | | | | | seem to be working correctly. No functional change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110226 91177308-0d34-0410-b5e6-96231b3b80d8
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