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2011-11-09Add comments.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144194 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-09Speculatively revert commit 144124 (djg) in the hope that the 32 bitDuncan Sands
dragonegg self-host buildbot will recover (it is complaining about object files differing between different build stages). Original commit message: Add a hack to the scheduler to disable pseudo-two-address dependencies in basic blocks containing calls. This works around a problem in which these artificial dependencies can get tied up in calling seqeunce scheduling in a way that makes the graph unschedulable with the current approach of using artificial physical register dependencies for calling sequences. This fixes PR11314. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144188 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-09Take advantage of the zero byte in StringMap when emitting dwarf stringpool ↵Benjamin Kramer
entries. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144184 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-09Remove extra ';'Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144172 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-09Remove the pubnames section, no one consumes it.Eric Christopher
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144169 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-09Collapse DomainValues across loop back-edges.Jakob Stoklund Olesen
During the initial RPO traversal of the basic blocks, remember the ones that are incomplete because of back-edges from predecessors that haven't been visited yet. After the initial RPO, revisit all those loop headers so the incoming DomainValues on the back-edges can be properly collapsed. This will properly fix execution domains on software pipelined code, like the included test case. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144151 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-09Link to the live DomainValue after merging.Jakob Stoklund Olesen
When merging two uncollapsed DomainValues, place a link to the active DomainValue from the passive DomainValue. This allows old stale references to the passive DomainValue to be updated to point to the active DomainValue. The new resolve() function finds the active DomainValue and updates the pointer. This change makes old live-out lists more useful since they may contain uncollapsed DomainValues that have since been merged into other DomainValues. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144149 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-08Track reference count independently from clear().Jakob Stoklund Olesen
This allows clear() to be called on a DomainValue with references. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144147 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-08Call release() directly when cleaning up the remaining DomainValues.Jakob Stoklund Olesen
There is no need to involve the LiveRegs array and kill() any longer. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144133 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-08Rename all methods to follow style guide.Jakob Stoklund Olesen
No functional change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144132 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-08Handle reference counts in one function: release().Jakob Stoklund Olesen
This new function will decrement the reference count, and collapse a domain value when the last reference is gone. This simplifies DomainValue reference counting, and decouples it from the LiveRegs array. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144131 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-08Also add the linkage name to the name accelerator tables if it existsEric Christopher
and is different than the normal name. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144130 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-08Add a hack to the scheduler to disable pseudo-two-address dependencies inDan Gohman
basic blocks containing calls. This works around a problem in which these artificial dependencies can get tied up in calling seqeunce scheduling in a way that makes the graph unschedulable with the current approach of using artificial physical register dependencies for calling sequences. This fixes PR11314. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144124 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-08Clear old DomainValue after merging.Jakob Stoklund Olesen
The old value may still be referenced by some live-out list, and we don't wan't to collapse those instructions twice. This fixes the "Can only swizzle VMOVD" assertion in some armv7 SPEC builds. <rdar://problem/10413292> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144117 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-08Add the base ObjC method name to the names lookup table as well.Eric Christopher
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144105 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-08Lower mem-ops to unaligned i32/i16 load/stores on ARM where supported.Lang Hames
Add support for trimming constants to GetDemandedBits. This fixes some funky constant generation that occurs when stores are expanded for targets that don't support unaligned stores natively. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144102 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-08Added invariant field to the DAG.getLoad method and changed all calls.Pete Cooper
When this field is true it means that the load is from constant (runt-time or compile-time) and so can be hoisted from loops or moved around other memory accesses git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144100 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-08A few more places where we can avoid multiple size queries.Eric Christopher
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144099 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-08Don't evaluate Data.size() on every iteration.Eric Christopher
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144095 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-08Add a bunch of calls to RemoveDeadNode in LegalizeDAG, so legalization ↵Eli Friedman
doesn't get confused by CSE later on. Fixes PR11318. Re-commit of r144034, with an extra fix so that RemoveDeadNode doesn't blow up. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144055 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-07Revert r144034 while I try to track down a crash.Eli Friedman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144044 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-07This code is dead, what with the new EH model and the auto-upgraders in place.Bill Wendling
Delete! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144043 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-07Kill and collapse outstanding DomainValues.Jakob Stoklund Olesen
DomainValues that are only used by "don't care" instructions are now collapsed to the first possible execution domain after all basic blocks have been processed. This typically means the PS domain on x86. For example, the vsel_i64 and vsel_double functions in sse2-blend.ll are completely collapsed to the PS domain instead of containing a mix of execution domains created by isel. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144037 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-07Add a bunch of calls to RemoveDeadNode in LegalizeDAG, so legalization ↵Eli Friedman
doesn't get confused by CSE later on. Fixes PR11318. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144034 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-07Add all completed and named types to the dwarf type accelerator tables.Eric Christopher
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144027 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-07Use a reverse post order instead of a DFS order.Jakob Stoklund Olesen
The enterBasicBlock() function is combining live-out values from predecessor blocks. The RPO traversal means that more predecessors have been visited when that happens, only back-edges are missing. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144025 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-07Move the hash function to using and taking a StringRef.Eric Christopher
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144024 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-07Simple destructor to delete the hash data we created earlier.Eric Christopher
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144023 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-07Extract two methods. No functional change.Jakob Stoklund Olesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144020 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-07MBB doesn't need to be a class member.Jakob Stoklund Olesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144015 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-07Fix pass name after the source was moved.Jakob Stoklund Olesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144014 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-07Use StringRef::startswith to do some string comparisons.Eric Christopher
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143982 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-07Avoid the use of a local temporary for comment twines.Eric Christopher
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143974 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-07Allow for the case where the name of the subprogram is "".Eric Christopher
Fixes a self-host error. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143970 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-07Don't introduce custom nodes after legalization in TargetLowering::BuildSDIV()Richard Osborne
and TargetLowering::BuildUDIV(). Fixes PR11283 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143964 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-07Remove unnecessary addition to API. Replace with something much simpler.Eric Christopher
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143925 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-07Add new files to cmake.Eric Christopher
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143924 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-07Add the support code to enable the dwarf accelerator tables. Upcoming patchesEric Christopher
to fix the types section (all types, not just global types), and testcases. The code to do the final emission is disabled by default. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143923 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-07Add a new dwarf accelerator table prototype with the goal of replacingEric Christopher
the pubnames and pubtypes tables. LLDB can currently use this format and a full spec is forthcoming and submission for standardization is planned. A basic summary: The dwarf accelerator tables are an indirect hash table optimized for null lookup rather than access to known data. They are output into an on-disk format that looks like this: .-------------. | HEADER | |-------------| | BUCKETS | |-------------| | HASHES | |-------------| | OFFSETS | |-------------| | DATA | `-------------' where the header contains a magic number, version, type of hash function, the number of buckets, total number of hashes, and room for a special struct of data and the length of that struct. The buckets contain an index (e.g. 6) into the hashes array. The hashes section contains all of the 32-bit hash values in contiguous memory, and the offsets contain the offset into the data area for the particular hash. For a lookup example, we could hash a function name and take it modulo the number of buckets giving us our bucket. From there we take the bucket value as an index into the hashes table and look at each successive hash as long as the hash value is still the same modulo result (bucket value) as earlier. If we have a match we look at that same entry in the offsets table and grab the offset in the data for our final match. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143921 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-07Expose a way to get the beginning of the dwarf string section.Eric Christopher
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143920 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-07Fix up comment.Eric Christopher
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143919 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-07Typo.Eric Christopher
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143918 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-05Add an option to pad an uleb128 to MCObjectWriter and remove the uleb128 ↵Benjamin Kramer
encoding from the DWARF asm printer. As a side effect we now print dwarf ulebs with .ascii directives. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143809 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-05Add more PRI.64 macros for MSVC and use them throughout the codebase.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143799 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-04Added missing &. Fixes <rdar://problem/10393723>Pete Cooper
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143753 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-04Emit declarations before definitions if they are available. This causes ↵Rafael Espindola
DW_AT_specification to point back in the file in the included testcase. Fixes PR11300. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143726 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-03Reapply r143206, with fixes. Disallow physical register lifetimesDan Gohman
across calls, and only check for nested dependences on the special call-sequence-resource register. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143660 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-03Reverted r143600 - selector reference changePete Cooper
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143646 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
2011-11-03Treat objc selector reference globals as invariant so that MachineLICM can ↵Pete Cooper
hoist them out of loops. Fixes <rdar://problem/6027699> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143600 91177308-0d34-0410-b5e6-96231b3b80d8
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