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2013-03-11Merge commit '279b9184c2ff4fea93b198a3519b8cb3a1d8d195'Eli Bendersky
Conflicts: include/llvm/CodeGen/LexicalScopes.h include/llvm/MC/MCAsmInfo.h lib/Linker/LinkArchives.cpp lib/Linker/LinkItems.cpp lib/MC/MCAsmInfo.cpp lib/MC/MCDwarf.cpp lib/Target/ARM/ARMInstrInfo.td lib/Target/ARM/ARMSubtarget.cpp lib/Target/ARM/MCTargetDesc/ARMMCTargetDesc.cpp lib/Target/Mips/MCTargetDesc/MipsELFObjectWriter.cpp lib/Target/Mips/MCTargetDesc/MipsMCTargetDesc.cpp lib/Target/Mips/MipsAsmPrinter.cpp lib/Target/Mips/MipsDelaySlotFiller.cpp lib/Target/Mips/MipsISelDAGToDAG.cpp lib/Target/Mips/MipsSubtarget.cpp lib/Target/Mips/MipsSubtarget.h lib/Target/Mips/MipsTargetObjectFile.cpp lib/Target/X86/MCTargetDesc/X86MCAsmInfo.cpp lib/Target/X86/X86FastISel.cpp lib/Target/X86/X86ISelLowering.cpp lib/Target/X86/X86TargetMachine.cpp lib/Transforms/CMakeLists.txt lib/Transforms/LLVMBuild.txt lib/Transforms/Makefile test/MC/ARM/arm_instructions.s test/MC/X86/AlignedBundling/pad-align-to-bundle-end.s
2013-03-11Don't remove a landing pad if the invoke requires a table entry.Bill Wendling
An invoke may require a table entry. For instance, when the function it calls is expected to throw. <rdar://problem/13360379> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176827 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-10Use LLVMBool instead of 'bool' in the C API. Based on a patch by Peter Zotov!Nick Lewycky
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176793 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-10BBVectorize: Fixup debugging statementsHal Finkel
After the recent data-structure improvements, a couple of debugging statements were broken (printing pointer values). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176791 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-09Remove a source of nondeterminism from the LoopVectorizer.Benjamin Kramer
This made us emit runtime checks in a random order. Hopefully bootstrap miscompares will go away now. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176775 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-09LoopVectorizer: Ignore all dbg intrinisicArnold Schwaighofer
Ignore all DbgIntriniscInfo instructions instead of just DbgValueInst. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176769 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-09LoopVectorizer: Ignore dbg.value instructionsArnold Schwaighofer
We want vectorization to happen at -g. Ignore calls to the dbg.value intrinsic and don't transfer them to the vectorized code. radar://13378964 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176768 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-09Simplify code. No functionality change.Jakub Staszak
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176765 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-09Use the correct index variable. This is the meat of what was supposed to be inNick Lewycky
r176751. Also, learn a lesson about applying patches by hand/eyeball. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176764 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-09Fix bug introduced in r176616 when making function identifier numbers stable.Nick Lewycky
Count the subprograms, not the compile units. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176751 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-09Don't emit the extra checksum into the .gcda file if the user hasn't asked forNick Lewycky
it. Fortunately, versions of gcov that predate the extra checksum also ignore any extra data, so this isn't a problem. There will be a matching commit in compiler-rt. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176745 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-08Insert the reduction start value into the first bypass block to preserve ↵Benjamin Kramer
domination. Fixes PR15344. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176701 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-07Keep coding stanard.Jakub Staszak
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176661 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-07Don't create IRBuilder if we can return from the method earlier.Jakub Staszak
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176660 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-07Fixed a crash when cloning a function into a function withPekka Jaaskelainen
different size argument list and without attributes in the arguments. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176632 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-07Switch from a version 4.2/4.4 switch to a four-byte version string to be putNick Lewycky
into the actual gcov file. Instead of using the bottom 4 bytes as the function identifier, use a counter. This makes the identifier numbers stable across multiple runs. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176616 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-07SimplifyCFG fix for volatile load/store.Andrew Trick
Fixes rdar:13349374. Volatile loads and stores need to be preserved even if the language standard says they are undefined. "volatile" in this context means "get out of the way compiler, let my platform handle it". Additionally, this is the only way I know of with llvm to write to the first page (when hardware allows) without dropping to assembly. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176599 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-06Generalize my previous fix for -print-options.Andrew Trick
Always print options that differ from their implicit default. At least for simple option types. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176572 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-06Give -loop-vectorize an explicit default.Andrew Trick
This way, clang -mllvm -print-options shows that the driver is overriding it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176569 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-06InstCombine: Don't shrink allocas when combining with a bitcast.Jim Grosbach
When considering folding a bitcast of an alloca into the alloca itself, make sure we don't shrink the amount of memory being allocated, or things rapidly go sideways. rdar://13324424 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176547 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-04Check isDiscardableIfUnused, rather than hasLocalLinkage, when bumpingLang Hames
GlobalValue linkage up to ExternalLinkage in the ExtractGV pass. This prevents linkonce and linkonce_odr symbols from being DCE'd. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176459 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-04Bypass Slow DividesPreston Gurd
* Only apply divide bypass optimization when not optimizing for size. * Fixed bug caused by constant for 0 value of type Int32, used dividend type to generate the constant instead. * For atom x86-64 apply the divide bypass to use 16-bit divides instead of 64-bit divides when operand values are small enough. * Added lit tests for 64-bit divide bypass. Patch by Tyler Nowicki! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176442 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-02PR14448 - prevent the loop vectorizer from vectorizing the same loop twice.Nadav Rotem
The LoopVectorizer often runs multiple times on the same function due to inlining. When this happens the loop vectorizer often vectorizes the same loops multiple times, increasing code size and adding unneeded branches. With this patch, the vectorizer during vectorization puts metadata on scalar loops and marks them as 'already vectorized' so that it knows to ignore them when it sees them a second time. PR14448. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176399 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-02Modify {Call,Invoke}Inst::addAttribute to take an AttrKind.Peter Collingbourne
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176397 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-01LoopVectorize: Don't hang forever if a PHI only has skipped PHI uses.Benjamin Kramer
Fixes PR15384. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176366 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-28Fix a bug in instcombine for fmul in fast math mode.Quentin Colombet
The instcombine recognized pattern looks like: a = b * c d = a +/- Cst or a = b * c d = Cst +/- a When creating the new operands for fadd or fsub instruction following the related fmul, the first operand was created with the second original operand (M0 was created with C1) and the second with the first (M1 with Opnd0). The fix consists in creating the new operands with the appropriate original operand, i.e., M0 with Opnd0 and M1 with C1. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176300 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-28[msan] Implement sanitize_memory attribute.Evgeniy Stepanov
Shadow checks are disabled and memory loads always produce fully initialized values in functions that don't have a sanitize_memory attribute. Value and argument shadow is propagated as usual. This change also updates blacklist behaviour to match the above. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176247 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-28Remove unused leftover declarations.Evgeniy Stepanov
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176240 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-27LoopVectorize: Vectorize math builtin calls.Benjamin Kramer
This properly asks TargetLibraryInfo if a call is available and if it is, it can be translated into the corresponding LLVM builtin. We don't vectorize sqrt() yet because I'm not sure about the semantics for negative numbers. The other intrinsic should be exact equivalents to the libm functions. Differential Revision: http://llvm-reviews.chandlerc.com/D465 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176188 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-27In GCC 4.7, function names are now forbidden from .gcda files. Support this byNick Lewycky
passing a null pointer to the function name in to GCDAProfiling, and add another switch onto GCOVProfiling. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176173 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-27Doh, fix behaviour change introduced in r176168 which is tested in clang,Nick Lewycky
not llvm. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176172 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-27For each function that we optimize we initialize a new list of lib ↵Nadav Rotem
functions. For each function name we malloc memory. This patch changes the Libcall map to use BumpPtrAllocator. Now we malloc only once. This speeds up instcombine by a few % on a large c++ program. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176170 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-27IRBuilder has grown all sorts of useful utility functions. Make use of them toNick Lewycky
clean up this code a tiny bit. No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176168 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-26Enhance integer division emulation support to handle types smaller than 32 bits,Pedro Artigas
enhancement done the trivial way; by extending inputs and truncating outputs which is addequate for targets with little or no support for integer arithmetic on integer types less than 32 bits. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176139 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-26Unify clang/llvm attributes for asan/tsan/msan (LLVM part)Kostya Serebryany
These are two related changes (one in llvm, one in clang). LLVM: - rename address_safety => sanitize_address (the enum value is the same, so we preserve binary compatibility with old bitcode) - rename thread_safety => sanitize_thread - rename no_uninitialized_checks -> sanitize_memory CLANG: - add __attribute__((no_sanitize_address)) as a synonym for __attribute__((no_address_safety_analysis)) - add __attribute__((no_sanitize_thread)) - add __attribute__((no_sanitize_memory)) for S in address thread memory If -fsanitize=S is present and __attribute__((no_sanitize_S)) is not set llvm attribute sanitize_S git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176075 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-24CVP: If we have a PHI with an incoming select, try to skip the select.Benjamin Kramer
This is a common pattern with dyn_cast and similar constructs, when the PHI no longer depends on the select it can often be turned into a simpler construct or even get hoisted out of the loop. PR15340. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175995 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-23Fixed a careless mistake.Michael Gottesman
rdar://13273675. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175939 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-22Implement the NoBuiltin attribute.Bill Wendling
The 'nobuiltin' attribute is applied to call sites to indicate that LLVM should not treat the callee function as a built-in function. I.e., it shouldn't try to replace that function with different code. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175835 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-21Allow GlobalValues to vectorize with AliasAnalysisRenato Golin
Storing the load/store instructions with the values and inspect them using Alias Analysis to make sure they don't alias, since the GEP pointer operand doesn't take the offset into account. Trying hard to not add any extra cost to loads and stores that don't overlap on global values, AA is *only* calculated if all of the previous attempts failed. Using biggest vector register size as the stride for the vectorization access, as we're being conservative and the cost model (which calculates the real vectorization factor) is only run after the legalization phase. We might re-think this relationship in the future, but for now, I'd rather be safe than sorry. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175818 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-21Remove dead code and whitespace.Chad Rosier
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175804 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-20Update a comment that looks to have been accidentally deleted many moons ago.Chad Rosier
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175658 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-20[asan] instrument invoke insns with noreturn attribute (as well as call insns)Kostya Serebryany
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175617 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-19Remove unused variable.Jakub Staszak
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175568 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-19Minor cleanups. No functionality change.Jakub Staszak
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175567 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-19Remove unneeded #includes.Jakub Staszak
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175565 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-19Fix typos.Jakub Staszak
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175562 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-19[asan] instrument memory accesses with unusual sizesKostya Serebryany
This patch makes asan instrument memory accesses with unusual sizes (e.g. 5 bytes or 10 bytes), e.g. long double or packed structures. Instrumentation is done with two 1-byte checks (first and last bytes) and if the error is found __asan_report_load_n(addr, real_size) or __asan_report_store_n(addr, real_size) is called. Also, call these two new functions in memset/memcpy instrumentation. asan-rt part will follow. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175507 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-19Temporarily revert r175470 for more review.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175476 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-18Check to see if the 'no-builtin' attribute is set before simplifying a ↵Bill Wendling
library call. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175470 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-18[asan] revert r175266 as it breaks code with packed structures. supporting ↵Kostya Serebryany
long double will require a more general solution git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175442 91177308-0d34-0410-b5e6-96231b3b80d8
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