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2013-03-26DebugInfo: more support for mutating DICompositeType to reduce magic number ↵David Blaikie
usage in Clang git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178090 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-26Add a boolean parameter to the ExecuteAndWait static function to indicatedChad Rosier
if execution failed. ExecuteAndWait returns -1 upon an execution failure, but checking the return value isn't sufficient because the wait command may return -1 as well. This new parameter is to be used by the clang driver in a subsequent commit. Part of rdar://13362359 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178087 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-26Add XTEST codegen supportMichael Liao
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178083 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-26Debug Info: Provide a means to update the members of a composite typeDavid Blaikie
This will be used to factor out some uses of magic number operand offsets inside Clang where these fields were updated in an effort to resolve forward declarations/circular references. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178078 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-26Fix the register scavenger for targets that provide custom spillingHal Finkel
As pointed out by Richard Sandiford, my recent updates to the register scavenger broke targets that use custom spilling (because the new code assumed that if there were no valid spill slots, than spilling would be impossible). I don't have a test case, but it should be possible to create one for Thumb 1, Mips 16, etc. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178073 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-26Update PEI's virtual-register-based scavenging to support multiple ↵Hal Finkel
simultaneous mappings The previous algorithm could not deal properly with scavenging multiple virtual registers because it kept only one live virtual -> physical mapping (and iterated through operands in order). Now we don't maintain a current mapping, but rather use replaceRegWith to completely remove the virtual register as soon as the mapping is established. In order to allow the register scavenger to return a physical register killed by an instruction for definition by that same instruction, we now call RS->forward(I) prior to eliminating virtual registers defined in I. This requires a minor update to forward to ignore virtual registers. These new features will be tested in forthcoming commits. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178058 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-26PowerPC: Simplify handling of fixups.Ulrich Weigand
MCTargetDesc/PPCMCCodeEmitter.cpp current has code like: if (isSVR4ABI() && is64BitMode()) Fixups.push_back(MCFixup::Create(0, MO.getExpr(), (MCFixupKind)PPC::fixup_ppc_toc16)); else Fixups.push_back(MCFixup::Create(0, MO.getExpr(), (MCFixupKind)PPC::fixup_ppc_lo16)); This is a problem for the asm parser, since it requires knowledge of the ABI / 64-bit mode to be set up. However, more fundamentally, at this point we shouldn't make such distinctions anyway; in an assembler file, it always ought to be possible to e.g. generate TOC relocations even when the main ABI is one that doesn't use TOC. Fortunately, this is actually completely unnecessary; that code was added to decide whether to generate TOC relocations, but that information is in fact already encoded in the VariantKind of the underlying symbol. This commit therefore merges those fixup types into one, and then decides which relocation to use based on the VariantKind. No changes in generated code. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178007 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-26Fix SCEV forgetMemoizedResults should search and destroy backedge exprs.Andrew Trick
Fixes PR15570: SEGV: SCEV back-edge info invalid after dead code removal. Indvars creates a SCEV expression for the loop's back edge taken count, then determines that the comparison is always true and removes it. When loop-unroll asks for the expression, it contains a NULL SCEVUnknkown (as a CallbackVH). forgetMemoizedResults should invalidate the loop back edges expression. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177986 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-26Split out the IRReader header and the utility functions it provides intoChandler Carruth
its own library. These functions are bridging between the bitcode reader and the ll parser which are in different libraries. Previously we didn't have any good library to do this, and instead played fast and loose with a "header only" set of interfaces in the Support library. This really doesn't work well as evidenced by the recent attempt to add timing logic to the these routines. As part of this, make them normal functions rather than weird inline functions, and sink the implementation into the library. Also clean up the header to be nice and minimal. This requires updating lots of build system dependencies to specify that the IRReader library is needed, and several source files to not implicitly rely upon the header file to transitively include all manner of other headers. If you are using IRReader.h, this commit will break you (the header moved) and you'll need to also update your library usage to include 'irreader'. I will commit the corresponding change to Clang momentarily. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177971 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-26Add a new watchdog timer interface. The interface does not permit handling ↵Nick Lewycky
timeouts, so it's only really useful if you're going to crash anyways. Use it in the pretty stack trace printer to kill the compiler if we hang while printing the stack trace. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177962 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-25[ELF] dont compute symbolname size in every loopShankar Easwaran
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177903 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-25reflect comment to the official referenceShankar Easwaran
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177895 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-25[ELF] add elf_hash function to compute the hash value of a symbol in the ↵Shankar Easwaran
dynamic symbol table git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177872 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-25Add a GC plugin for ErlangYiannis Tsiouris
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177867 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-25Refine fenv.h handling: check if the desired macros exist, before usingJoerg Sonnenberger
it. NetBSD/ARM and TILE-Gx are examples for platforms that have an unusable fenv.h and this avoids the need for a blacklist. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177865 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-22Allow the register scavenger to spill multiple registersHal Finkel
This patch lets the register scavenger make use of multiple spill slots in order to guarantee that it will be able to provide multiple registers simultaneously. To support this, the RS's API has changed slightly: setScavengingFrameIndex / getScavengingFrameIndex have been replaced by addScavengingFrameIndex / isScavengingFrameIndex / getScavengingFrameIndices. In forthcoming commits, the PowerPC backend will use this capability in order to implement the spilling of condition registers, and some special-purpose registers, without relying on r0 being reserved. In some cases, spilling these registers requires two GPRs: one for addressing and one to hold the value being transferred. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177774 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-22Swap the DIFile in DILexicalBlockFile out for the raw name/directory pairDavid Blaikie
This is the last change in transitioning all DIScopes to have a common prefix. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177756 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-22reorder the fields in DILexicalBlockFile to match the common prefix for DIScopesDavid Blaikie
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177754 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-22Revert r177675. This is language-specific and shouldn't be in the API.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177748 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-22Refactor out the DIFile parameter to DILexicalBlock to refer to the raw ↵David Blaikie
file/directory pair git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177742 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-22InstCombine: Improve the result bitvect type when folding (cmp pred (load ↵Arnaud A. de Grandmaison
(gep GV, i)) C) to a bit test. The original code used i32, and i64 if legal. This introduced unneeded casts when they aren't legal, or when the index variable i has another type. In order of preference: try to use i's type; use the smallest fitting legal type (using an added DataLayout method); default to i32. A testcase checks that this works when the index gep operand is i16. Patch by : Ahmed Bougacha <ahmed.bougacha@gmail.com> Reviewed by : Duncan git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177712 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-22Remove ScavengedRC from RegisterScavengingHal Finkel
ScavengedRC was a dead private variable (set, but not otherwise used). No functionality change intended. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177708 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-22Reorder the DIFile field in DILexicalBlock to become a prefix common with ↵David Blaikie
other DIScopes git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177703 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-22Introduce LLVM_STATIC_ASSERT macro, which expands to C/C++'s static_assert ↵Argyrios Kyrtzidis
on compilers which support it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177699 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-22Revert r177543: Add timing of the IR parsing code with a newChandler Carruth
-time-ir-parsing flag This breaks the layering of the Support library. We can't add an implementation side to IRReader because it refers directly to entities only accessible as part of the IR, AsmParser, and BitcodeReader libraries. It can only be used in a context where all of those libraries will be available. We'll need to find some other way to get this functionality, and hopefully solve the long-standing layering problem of IRReader.h... git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177695 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-21Refactor the filename/directory information in DISubprogram to refer ↵David Blaikie
directly to the pair rather than the DIFile. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177677 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-21Add a query to tell if a landing pad has a catch-all.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177675 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-21Move the DIFile in DISubprogram to the beginning to be a common prefix along ↵David Blaikie
with other DIScopes git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177674 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-21Remove unused field in DISubprogramDavid Blaikie
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177661 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-21Hoist the definition of getTypeSizeInBits to be inlinable and in theChandler Carruth
header. This method is called in the hot path for *many* passes, SROA is what caught my interest. A common pattern is that which branch of the switch should be taken is known in the callsite and so it is a very good candidate for inlining and simplification. Moving it into the header allows the optimizer to fold a lot of boring, repeatitive code in callers of this routine. I'm seeing pretty significant speedups in parts of SROA and I suspect other passes will see similar speedups if they end up working with type sizes frequently. I've not seen any significant growth of the binaries as a consequence, but let me know if you see anything suspicious here. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177632 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-21Removing unused DISubprogram::getFileDavid Blaikie
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177614 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-20Debug info: refactor the first field of DICompileUnit to be a raw ↵David Blaikie
file/directory pair This removes the DICompileUnit special case from DIScope. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177610 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-20Use pre-inc, pre-dec when possible.Jakub Staszak
They are generally faster (at least not slower) than post-inc, post-dec. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177608 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-20Debug Info: Swap the 2nd and 3rd parameters to DICompileUnit to match the ↵David Blaikie
common DIScope prefix git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177595 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-20Remove unused field in DICompileUnitDavid Blaikie
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177590 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-20Add std prefixes to fix the build with xlc.Rafael Espindola
Patch by Kai <kai@redstar.de>. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177574 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-20Make sure TableGen exits with an error code after printing errors.Jakob Stoklund Olesen
This makes it possible to report multiple errors in one invocation. There are already calls to PrintError in CodeGenDAGPatterns.cpp which previously would not cause TableGen to fail. <rdar://problem/13463339> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177573 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-20Refactor file/directory path in namespace debug info to refer directly to ↵David Blaikie
the pair rather than the DIFile (paired to a Clang test - excuse the buildbot skew/fallout) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177566 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-20Remove blank line before block comment.Eric Christopher
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177550 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-20DIBuilder: allow linkage name to be specified for global variablesDavid Blaikie
Patch by Kai Nacke (kai@redstar.de) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177547 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-20Add timing of the IR parsing code with a new -time-ir-parsing flagEli Bendersky
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177543 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-20Reorder the DIFile parameter in DINameSpaceDavid Blaikie
Moving the DIFile parameter to immediately proceed the tag so that it will be a common prefix with other DIScopes (once the DIFile is replaced with the raw file/directory pair). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177492 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-20Provide more details for DINameSpace debug info in the IR comment annotationsDavid Blaikie
Sorry for the version skew - I should've committed this before the corresponding Clang test case. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177486 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-20Refactor the DIFile (2nd) parameter to DITypes to be an MDNode reference to ↵David Blaikie
a raw directory/file pair This makes DIType's first non-tag parameter the same as DIFile's, allowing them to both share the common implementation of getFilename/getDirectory in DIScope. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177467 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-19Move the DIFile operand to DITypes from the 4th operand to the 2nd.David Blaikie
This is another step along the way to making all DIScopes have a common prefix which can be added to in a general manner to support using directives (DW_TAG_imported_module). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177462 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-19Dead code.Chad Rosier
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177450 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-19[ms-inline asm] Move the size directive asm rewrite into the target specificChad Rosier
logic as a QOI cleanup. rdar://13445327 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177413 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-19The Linker interface has some dead code after the cleanup in r172749Eli Bendersky
(and possibly others). The attached patch removes it, and tries to update comments accordingly. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177406 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-18Move #include of BitVector from .h to .cpp file.Jakub Staszak
Also remove unneeded #include and forward declaration. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177357 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-18Add some constantness.Jakub Staszak
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177356 91177308-0d34-0410-b5e6-96231b3b80d8
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