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2012-10-14Use builder to create alignment attributes. Remove dead function.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165890 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-14Remove dead method.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165889 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-14Don't pass in an Attributes object to something that expects an integral value.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165887 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-13Remove unused private field.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165881 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-13X86: Depending on the local semantics of .align this test can also emit a ↵Benjamin Kramer
nopl instead of nopw. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165880 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-13Documentation: Lexicon.rst: add "BB Vectorization" and "TBAA".Dmitri Gribenko
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165879 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-13X86: Disable long nops for all cpus prior to pentiumpro/i686.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165878 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-13Drop <def,dead> flags when merging into an unused lane.Jakob Stoklund Olesen
The new coalescer can merge a dead def into an unused lane of an otherwise live vector register. Clear the <dead> flag when that happens since the flag refers to the full virtual register which is still live after the partial dead def. This fixes PR14079. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165877 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-13instcombine: Migrate strchr and strrchr optimizationsMeador Inge
This patch migrates the strchr and strrchr optimizations from the simplify-libcalls pass into the instcombine library call simplifier. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165875 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-13instcombine: Migrate strcat and strncat optimizationsMeador Inge
This patch migrates the strcat and strncat optimizations from the simplify-libcalls pass into the instcombine library call simplifier. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165874 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-13Implement new LibCallSimplifier classMeador Inge
This patch implements the new LibCallSimplifier class as outlined in [1]. In addition to providing the new base library simplification infrastructure, all the fortified library call simplifications were moved over to the new infrastructure. The rest of the library simplification optimizations will be moved over with follow up patches. NOTE: The original fortified library call simplifier located in the SimplifyFortifiedLibCalls class was not removed because it is still used by CodeGenPrepare. This class will eventually go away too. [1] http://lists.cs.uiuc.edu/pipermail/llvmdev/2012-August/052283.html git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165873 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-13Allow for loops in LiveIntervals::pruneValue().Jakob Stoklund Olesen
It is possible that the live range of the value being pruned loops back into the kill MBB where the search started. When that happens, make sure that the beginning of KillMBB is also pruned. Instead of starting a DFS at KillMBB and skipping the root of the search, start a DFS at each KillMBB successor, and allow the search to loop back to KillMBB. This fixes PR14078. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165872 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-13X86: Fix accidentally swapped operands.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165871 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-13Teach SROA to cope with wrapper aggregates. These show up a lot in ABIChandler Carruth
type coercion code, especially when targetting ARM. Things like [1 x i32] instead of i32 are very common there. The goal of this logic is to ensure that when we are picking an alloca type, we look through such wrapper aggregates and across any zero-length aggregate elements to find the simplest type possible to form a type partition. This logic should (generally speaking) rarely fire. It only ends up kicking in when an alloca is accessed using two different types (for instance, i32 and float), and the underlying alloca type has wrapper aggregates around it. I noticed a significant amount of this occurring looking at stepanov_abstraction generated code for arm, and suspect it happens elsewhere as well. Note that this doesn't yet address truly heinous IR productions such as PR14059 is concerning. Those result in mismatched *sizes* of types in addition to mismatched access and alloca types. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165870 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-13Speculatively harden the conversion logic. I have no idea if this willChandler Carruth
help the dragonegg builders, and no test case at this point, but this was one dimly plausible case I spotted by inspection. Hopefully will get a testcase from those bots soon-ish, and will tidy this up with proper testing. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165869 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-13X86: Promote i8 cmov when both operands are coming from truncates of the ↵Benjamin Kramer
same width. X86 doesn't have i8 cmovs so isel would emit a branch. Emitting branches at this level is often not a good idea because it's too late for many optimizations to kick in. This solution doesn't add any extensions (truncs are free) and tries to avoid introducing partial register stalls by filtering direct copyfromregs. I'm seeing a ~10% speedup on reading a random .png file with libpng15 via graphicsmagick on x86_64/westmere, but YMMV depending on the microarchitecture. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165868 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-13Silence a warning in -assert builds.Chandler Carruth
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165867 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-13Clean up how we rewrite loads and stores to the whole alloca. When theseChandler Carruth
are single value types, the load and store should be directly based upon the alloca and then bitcasting can fix the type as needed afterward. This might in theory improve some of the IR coming out of SROA, but I don't expect big changes yet and don't have any test cases on hand. This is really just a cleanup/refactoring patch. The next patch will cause this code path to be hit a lot more, actually get SROA to promote more allocas and include several more test cases. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165864 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-13[ms-inline asm] Remove the MatchInstruction() function. Previously, this wasChad Rosier
the interface between the front-end and the MC layer when parsing inline assembly. Unfortunately, this is too deep into the parsing stack. Specifically, we're unable to handle target-independent assembly (i.e., assembly directives, labels, etc.). Note the MatchAndEmitInstruction() isn't the correct abstraction either. I'll be exposing target-independent hooks shortly, so this is really just a cleanup. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165858 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-12Check section type rather than assuming it's code when emitting sections ↵Andrew Kaylor
while processing relocations. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165854 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-12ARM: tail-call inside a function where part of a byval argument is on caller'sManman Ren
local frame causes problem. For example: void f(StructToPass s) { g(&s, sizeof(s)); } will cause problem with tail-call since part of s is passed via registers and saved in f's local frame. When g tries to access s, part of s may be corrupted since f's local frame is popped out before the tail-call. The current fix is to disable tail-call if getVarArgsRegSaveSize is not 0 for the caller. This is a conservative approach, if we can prove the address of s or part of s is not taken and passed to g, it should be okay to perform tail-call. rdar://12442472 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165853 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-12[ms-inline asm] Capitalize per coding standard.Chad Rosier
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165847 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-12Fix buildbots: -misched=shuffle is only available in +Asserts builds.Jakob Stoklund Olesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165846 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-12ARM: Mark VSELECT as 'expand'.Jim Grosbach
The backend already pattern matches to form VBSL when it can. We may want to teach it to use the vbsl intrinsics at some point to prevent machine licm from mucking with this, but using the Expand is completely correct. http://llvm.org/bugs/show_bug.cgi?id=13831 http://llvm.org/bugs/show_bug.cgi?id=13961 Patch by Peter Couperus <peter.couperus@st.com>. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165845 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-12[ms-inline asm] Use the new API introduced in r165830 in lieu of theChad Rosier
MapAndConstraints vector. Also remove the unused Kind argument. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165833 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-12[ms-inline asm] Add a few data members and member functions to theChad Rosier
MCParsedAsmOperand class in support of ms-style inline assembly. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165830 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-12Use MACOSX_DEPLOYMENT_TARGET when it is set. <rdar://problem/12433905>Bob Wilson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165828 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-12Correcting enum values mentioned in comments.Andrew Kaylor
Patch by Ashok Thirumurthi. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165827 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-12Use a transposed algorithm for handleMove().Jakob Stoklund Olesen
Completely update one interval at a time instead of collecting live range fragments to be updated. This avoids building data structures, except for a single SmallPtrSet of updated intervals. Also share code between handleMove() and handleMoveIntoBundle(). Add support for moving dead defs across other live values in the interval. The MI scheduler can do that. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165824 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-12Add bitcode instruction encoding documentation for module versionJan Wen Voung
0 and 1. Followup to 165739. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165814 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-12Fix coalescing with IMPLICIT_DEF values.Jakob Stoklund Olesen
PHIElimination inserts IMPLICIT_DEF instructions to guarantee that all PHI predecessors have a live-out value. These IMPLICIT_DEF values are not considered to be real interference when coalescing virtual registers: %vreg1 = IMPLICIT_DEF %vreg2 = MOV32r0 When joining %vreg1 and %vreg2, the IMPLICIT_DEF instruction and its value number should simply be erased since the %vreg2 value number now provides a live-out value for the PHI predecesor block. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165813 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-12Change (!list.size() == 0) to (!list.empty()). No functional change.Richard Trieu
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165812 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-12Set default CPU for Darwin targets with LTO. <rdar://problem/12457841>Bob Wilson
This is a temporary hack until Bill's project to record command line options in the LLVM IR is ready. Clang currently sets a default CPU but that isn't recorded anywhere and it doesn't get used in the final LTO compilation. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165809 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-12llvm/test/CodeGen/PowerPC/2012-10-12-bitcast.ll: Try to fix failure on ↵NAKAMURA Takumi
non-ppc hosts, to add -mattr=+altivec. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165803 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-12Fix big-endian codegen bug in DAGTypeLegalizer::ExpandRes_BITCASTUlrich Weigand
On PowerPC, a bitcast of <16 x i8> to i128 may run through a code path in ExpandRes_BITCAST that attempts to do an intermediate bitcast to a <4 x i32> vector, and then construct the Hi and Lo parts of the resulting i128 by pairing up two of those i32 vector elements each. The code already recognizes that on a big-endian system, the first two vector elements form the Hi part, and the final two vector elements form the Lo part (vice-versa from the little-endian situation). However, we also need to take endianness into account when forming each of those separate pairs: on a big-endian system, vector element 0 is the *high* part of the pair making up the Hi part of the result, and vector element 1 is the low part of the pair. The code currently always uses vector element 0 as the low part and vector element 1 as the high part, as is appropriate for little-endian platforms only. This patch fixes this by swapping the vector elements as they are paired up as appropriate. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165802 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-12ExceptionDemo.cpp: Use Function::setDoesNotReturn(). Attributes stuff was ↵NAKAMURA Takumi
updated. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165796 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-12ExceptionDemo.cpp: Whitespace.NAKAMURA Takumi
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165795 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-12Add powerpc-ibm-aix to Triple. Patch by Kai.Duncan Sands
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165792 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-12Add float-abi and softfloat options to lliTim Northover
Patch by Amara Emerson. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165791 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-12JITTest.cpp: Use LLVM_ATTRIBUTE_USED, rather than __attribute__ directly!NAKAMURA Takumi
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165790 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-12Shuffle the virtual destructor down to the base. This should actually pacifyNick Lewycky
-Wnon-virtual-dtor for real. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165787 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-12Give this class full of virtual functions a virtual destructor. Classes loveNick Lewycky
virtual destructors. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165786 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-12Indenting.Eric Christopher
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165785 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-12fix warningSebastian Pop
DependenceAnalysis.cpp:1164:32: warning: implicit truncation from 'int' to bitfield changes value from -5 to 3 [-Wconstant-conversion] Result.DV[Level].Direction &= ~Dependence::DVEntry::GT; ^ ~~~~~~~~~~~~~~~~~~~~~~~~ Patch from Preston Briggs <preston.briggs@gmail.com>. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165784 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-12Div, Rem int/unsigned int Reed Kotler
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165783 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-12docs: Update example to conform to coding standards.Sean Silva
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165782 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-12Mark function as 'used' so that LTO doesn't try to get rid of it.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165781 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-12Revert r165777, "Mark function as 'used' so that LTO doesn't try to get rid ↵NAKAMURA Takumi
of it." git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165780 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-12docs: Minor clean up of Phabricator documentation.Sean Silva
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165779 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-12Legalizer optimize a pair of div / mod to a call to divrem libcall if they areEvan Cheng
not legal. However, it should use a div instruction + mul + sub if divide is legal. The rem legalization code was missing a check and incorrectly uses a divrem libcall even when div is legal. rdar://12481395 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165778 91177308-0d34-0410-b5e6-96231b3b80d8
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