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2013-01-17Provide a place for targets to insert ILP optimization passes.Jakob Stoklund Olesen
Move the early if-conversion pass into this group. ILP optimizations usually need to find the right balance between register pressure and ILP using the MachineTraceMetrics analysis to identify critical paths and estimate other costs. Such passes should run together so they can share dominator tree and loop info analyses. Besides if-conversion, future passes to run here here could include expression height reduction and ARM's MLxExpansion pass. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172687 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-17This is a resubmittal. For some reason it broke the bots yesterdayJack Carter
but I cannot reproduce the problem and have scrubed my sources and even tested with llvm-lit -v --vg. The Mips RDHWR (Read Hardware Register) instruction was not tested for assembler or dissassembler consumption. This patch adds that functionality. Contributer: Vladimir Medic git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172685 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-16[IR] Add 'Append' and 'AppendUnique' module flag behaviors.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172659 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-16Change CostTable model to be global to all targetsRenato Golin
Moving the X86CostTable to a common place, so that other back-ends can share the code. Also simplifying it a bit and commoning up tables with one and two types on operations. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172658 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-16Some small (and mostly cosmetic) fixes.Eli Bendersky
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172640 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-16Now that GenericAsmParser was folded into AsmParser, some methods and types canEli Bendersky
return into the safe harbor of AsmParser's private areas. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172637 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-16[Linker] Change module flag linking to be more extensible.Daniel Dunbar
- Instead of computing a bunch of buckets of different flag types, just do an incremental link resolving conflicts as they arise. - This also has the advantage of making the link result deterministic and not dependent on map iteration order. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172634 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-16We want the dwarf AT_producer for assembly source files to match clang'sKevin Enderby
AT_producer. Which includes clang's version information so we can tell which version of the compiler was used. This is the first of two steps to allow us to do that. This is the llvm-mc change to provide a method to set the AT_producer string. The second step, coming soon to a clang near you, will have the clang driver pass the value of getClangFullVersion() via an flag when invoking the integrated assembler on assembly source files. rdar://12955296 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172630 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-16Introduce llvm::sys::getProcessTriple() function.Peter Collingbourne
In r143502, we renamed getHostTriple() to getDefaultTargetTriple() as part of work to allow the user to supply a different default target triple at configure time. This change also affected the JIT. However, it is inappropriate to use the default target triple in the JIT in most circumstances because this will not necessarily match the current architecture used by the process, leading to illegal instruction and other such errors at run time. Introduce the getProcessTriple() function for use in the JIT and its clients, and cause the JIT to use it. On architectures with a single bitness, the host and process triples are identical. On other architectures, the host triple represents the architecture of the host CPU, while the process triple represents the architecture used by the host CPU to interpret machine code within the current process. For example, when executing 32-bit code on a 64-bit Linux machine, the host triple may be 'x86_64-unknown-linux-gnu', while the process triple may be 'i386-unknown-linux-gnu'. This fixes JIT for the 32-on-64-bit (and vice versa) build on non-Apple platforms. Differential Revision: http://llvm-reviews.chandlerc.com/D254 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172627 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-16Allow vectors in CreatePointerCast of constants.Evgeniy Stepanov
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172615 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-16ASan: wrap mapping scale and offset in a struct and make it a member of ASan ↵Alexey Samsonov
passes. Add test for non-default mapping scale and offset. No functionality change git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172610 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-16[ObjCARC] Turn off ignoring unwind edges in ObjCARC when ↵Michael Gottesman
-fno-objc-arc-exception is enabled due to it's affect on correctness. Specifically according to the semantics of ARC -fno-objc-arc-exception simply states that it is expected that the unwind path out of a call *MAY* not release objects. Thus we can have the situation where a release gets moved into a catch block which we ignore when we remove a retain/release pair resulting in (even though we assume the program is exiting anyways) the cleanup code path potentially blowing up before program exit. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172599 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-16reverting 172579Jack Carter
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172594 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-16Define metadata interfaces for describing a static data memberEric Christopher
of a class. Emit static data member declarations and definitions through correctly. Part of PR14471. Patch by Paul Robinson! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172590 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-16Use the ExtensionDirectiveHandler type in other places where it makes sense.Eli Bendersky
Since we already have this type it's a shame to keep dragging a pair of object and method around explicitly. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172584 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-16Akira,Jack Carter
Hope you are feeling better. The Mips RDHWR (Read Hardware Register) instruction was not tested for assembler or dissassembler consumption. This patch adds that functionality. Contributer: Vladimir Medic git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172579 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-15Split address information for DWARF5 split dwarf proposal. This involvesEric Christopher
using the DW_FORM_GNU_addr_index and a separate .debug_addr section which stays in the executable and is fully linked. Sneak in two other small changes: a) Print out the debug_str_offsets.dwo section. b) Change form we're expecting the entries in the debug_str_offsets.dwo section to take from ULEB128 to U32. Add tests for all of this in the fission-cu.ll test. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172578 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-15Teach InstCombine to optimize extract of a value from a vector add operation ↵Nadav Rotem
with a constant zero. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172576 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-15Optimize the memory usage of MC bundling, by creating a new type of fragmentEli Bendersky
into which we can emit single instructions without fixups (which is most instructions). This is an optimization required because MCDataFragment is prety large (240 bytes on x64), with no change in functionality. For large programs, this reduces memory usage overhead required for bundling by 40%. To make the code as palatable as possible, the MCEncodedFragment interface was further fragmented (no pun intended) and MCEncodedFragmentWithFixups is used as the interface to work against when the user expects fixups. MCDataFragment and MCRelaxableFragment implement this interface, while the new MCCompactEncodedInstFragment implements MCEncodeFragment. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172572 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-15[ms-inline asm] Address the FIXME in AsmParser.cpp.Chad Rosier
// FIXME: Constraints are hard coded to 'm', but we need an 'r' // constraint for addressof. This needs to be cleaned up! Test cases are already in place. Specifically, clang/test/CodeGen/ms-inline-asm.c t15(), t16(), and t24(). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172569 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-15Refactor generic Asm directive parsing.Eli Bendersky
After discussing the refactoring with Jim and Daniel, the following changes were made: * All generic directive parsing is now done by AsmParser itself. The previous division between it and GenericAsmParser did not have clear boundaries and just produced unnatural code of GenericAsmParser juggling the internals of AsmParser through an interface. The division of responsibilities is now clear: target-specific directives, other extensions (used by platform-specific parseres), and generic directives. * Priority for directive parsing was reshuffled to ask extensions first and check the generic directives later. No change in functionality. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172568 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-151. Hoist minus sign as high as possible in an attempt to revealShuxin Yang
some optimization opportunities (in the enclosing supper-expressions). rule 1. (-0.0 - X ) * Y => -0.0 - (X * Y) if expression "-0.0 - X" has only one reference. rule 2. (0.0 - X ) * Y => -0.0 - (X * Y) if expression "0.0 - X" has only one reference, and the instruction is marked "noSignedZero". 2. Eliminate negation (The compiler was already able to handle these opt if the 0.0s are replaced with -0.0.) rule 3: (0.0 - X) * (0.0 - Y) => X * Y rule 4: (0.0 - X) * C => X * -C if the expr is flagged "noSignedZero". 3. Rule 5: (X*Y) * X => (X*X) * Y if X!=Y and the expression is flagged with "UnsafeAlgebra". The purpose of this transformation is two-fold: a) to form a power expression (of X). b) potentially shorten the critical path: After transformation, the latency of the instruction Y is amortized by the expression of X*X, and therefore Y is in a "less critical" position compared to what it was before the transformation. 4. Remove the InstCombine code about simplifiying "X * select". The reasons are following: a) The "select" is somewhat architecture-dependent, therefore the higher level optimizers are not able to precisely predict if the simplification really yields any performance improvement or not. b) The "select" operator is bit complicate, and tends to obscure optimization opportunities. It is btter to keep it as low as possible in expr tree, and let CodeGen to tackle the optimization. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172551 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-15[Linker] Drop asserts that are embedded in cast<> and now checked by the ↵Daniel Dunbar
verifier. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172550 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-15[IR] Add verification for module flags with the "require" behavior.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172549 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-15LoopVectorizer cost model. Honor the user command line flag that selects the ↵Nadav Rotem
vectorization factor even if the target machine does not have any vector registers. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172544 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-15[msan] Fix handling of equality comparison of pointer vectors.Evgeniy Stepanov
Also improve test coveration of the handling of relational comparisons. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172539 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-15Allow vectors in CreatePointerCast.Evgeniy Stepanov
Both underlying IR operations support vectors of pointers already. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172538 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-15[Object][ELF] Simplify ELFObjectFile by using ELFType.Michael J. Spencer
This simplifies the usage and implementation of ELFObjectFile by using ELFType to replace: <endianness target_endianness, std::size_t max_alignment, bool is64Bits> This does complicate the base ELF types as they must now use template template parameters to partially specialize for the 32 and 64bit cases. However these are only defined once. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172515 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-15[IR] Add verifier support for llvm.module.flags.Daniel Dunbar
- Also, update the LangRef documentation on module flags to match the implementation. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172498 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-15This patch fixes a Mips specific bug where Jack Carter
we need to generate a N64 compound relocation R_MIPS_GPREL_32/R_MIPS_64/R_MIPS_NONE. The bug was exposed by the SingleSourcetest case DuffsDevice.c. Contributer: Jack Carter git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172496 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-14Now GenericAsmParser and AsmParser are no longer friends, GenericAsmParser canEli Bendersky
simply use the getParser method from MCAsmParserExtension, working through the MCAsmParser interface. There's no longer a need to overload that method to cast it to the concrete AsmParser. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172491 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-14Properly encapsulate additional methods and data from AsmParser.Eli Bendersky
This finally allows AsmParser to no longer list GenericAsmParser as a friend. All member vars directly accessed by GenericAsmParser have been properly encapsulated and exposed through the MCAsmParser interface. This reduces the coupling between AsmParser and GenericAsmParser. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172490 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-14Remove trailing spaces.Jakub Staszak
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172489 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-14This change is to implement following rules under the condition C_A and/or C_RShuxin Yang
--------------------------------------------------------------------------- C_A: reassociation is allowed C_R: reciprocal of a constant C is appropriate, which means - 1/C is exact, or - reciprocal is allowed and 1/C is neither a special value nor a denormal. ----------------------------------------------------------------------------- rule1: (X/C1) / C2 => X / (C2*C1) (if C_A) => X * (1/(C2*C1)) (if C_A && C_R) rule 2: X*C1 / C2 => X * (C1/C2) if C_A rule 3: (X/Y)/Z = > X/(Y*Z) (if C_A && at least one of Y and Z is symbolic value) rule 4: Z/(X/Y) = > (Z*Y)/X (similar to rule3) rule 5: C1/(X*C2) => (C1/C2) / X (if C_A) rule 6: C1/(X/C2) => (C1*C2) / X (if C_A) rule 7: C1/(C2/X) => (C1/C2) * X (if C_A) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172488 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-14[ms-inline asm] Extend support for parsing Intel bracketed memory operands thatChad Rosier
have an arbitrary ordering of the base register, index register and displacement. rdar://12527141 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172484 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-14Improve r172468: const_cast is not needed hereDmitri Gribenko
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172483 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-14Improve r172471: avoid all those extra casts on the lines nearbyDmitri Gribenko
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172481 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-14This patch addresses an incorrect transformation in the DAG combiner.Bill Schmidt
The included test case is derived from one of the GCC compatibility tests. The problem arises after the selection DAG has been converted to type-legalized form. The combiner first sees a 64-bit load that can be converted into a pre-increment form. The original load feeds into a SRL that isolates the upper 32 bits of the loaded doubleword. This looks like an opportunity for DAGCombiner::ReduceLoadWidth() to replace the 64-bit load with a 32-bit load. However, this transformation is not valid, as the replacement load is not a pre-increment load. The pre-increment load produces an extra result, which feeds a subsequent add instruction. The replacement load only has one result value, and this value is propagated to all uses of the pre- increment load, including the add. Because the add is looking for the second result value as its operand, it ends up attempting to add a constant to a token chain, resulting in a crash. So the patch simply disables this transformation for any load with more than two result values. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172480 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-14Follow up of commit r172472.Quentin Colombet
Refactor the big if/else sequence into one string switch for ARM subtype selection. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172475 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-14Complete the existing support of ARM v6m, v7m, and v7em, i.e., respectively ↵Quentin Colombet
cortex-m0, cortex-m3, and cortex-m4 on the backend side. Adds new subtype values for the MachO format and use them when the related triple are set. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172472 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-14Fix CastingDavid Greene
Fix a casting-away-const compiler warning. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172471 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-14Fix CastingDavid Greene
Do proper casting to eliminate a const-away-cast compiler warning. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172470 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-14Fix More CastsDavid Greene
Properly cast some more code that triggered cast-away-const errors. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172469 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-14Fix Another CastDavid Greene
Properly cast code to eliminate cast-away-const errors. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172468 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-14Fix Casting BugDavid Greene
Add a const version of getFpValPtr to avoid a cast-away-const warning. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172467 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-14Fix More CastsDavid Greene
Fix another cast-away-const cast. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172466 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-14Fix CastingDavid Greene
Stop a gcc warning about casting away const. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172465 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-14SCEVExpander fix. RAUW needs to update the InsertedExpressions cache.Andrew Trick
Note that this bug is only exposed because LTO fails to use TTI. Fixes self-LTO of clang. rdar://13007381. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172462 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-14Fix typo in comment.Nick Lewycky
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172460 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-14Changed SmallPtrSet.count guard + SmallPtrSet.insert to just SmallPtrSet.insert.Michael Gottesman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172452 91177308-0d34-0410-b5e6-96231b3b80d8
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