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* [PowerPC] Support .llong and fix .wordUlrich Weigand2013-07-094-2/+60
| | | | | | | | This adds support for the .llong PowerPC-specifc assembler directive. In doing so, I notices that .word is currently incorrect: it is supposed to define a 2-byte data element, not a 4-byte one. llvm-svn: 185911
* Commit r185909 was a misapplied patch, fix itDavid Majnemer2013-07-093-24/+73
| | | | llvm-svn: 185910
* InstCombine: add more transformsDavid Majnemer2013-07-094-5/+87
| | | | | | | | | C1-X <u C2 -> (X|(C2-1)) == C1 C1-X >u C2 -> (X|C2) == C1 X-C1 <u C2 -> (X & -C2) == C1 X-C1 >u C2 -> (X & ~C2) == C1 llvm-svn: 185909
* PPC: Allocate RS spill slot for unaligned i64 load/storeHal Finkel2013-07-092-2/+152
| | | | | | | | | | | | | | | | | | | This fixes another bug found by llvm-stress! If we happen to be doing an i64 load or store into a stack slot that has less than a 4-byte alignment, then the frame-index elimination may need to use an indexed load or store instruction (because the offset may not be a multiple of 4, a requirement of the STD/LD instructions). The extra register needed to hold the offset comes from the register scavenger, and it is possible that the scavenger will need to use an emergency spill slot. As a result, we need to make sure that a spill slot is allocated when doing an i64 load/store into a less-than-4-byte-aligned stack slot. Because test cases for things like this tend to be fairly fragile, I've concatenated a few small bugpoint-reduced test cases together to form the regression test. llvm-svn: 185907
* Compute the size of an archive member in the constructor.Rafael Espindola2013-07-092-16/+15
| | | | | | | It is always computed the same way (by parsing the header). Doing it in the constructor simplifies the callers a bit. llvm-svn: 185905
* Remove declare but not implemented methods.Rafael Espindola2013-07-091-4/+0
| | | | llvm-svn: 185904
* Move some code out of line. No functionality change.Rafael Espindola2013-07-092-65/+76
| | | | llvm-svn: 185901
* X86: Add comment.Jim Grosbach2013-07-091-0/+5
| | | | llvm-svn: 185900
* X86 fast-isel: Avoid explicit AH subreg reference for [SU]Rem.Jim Grosbach2013-07-091-4/+31
| | | | | | | | | | | | | Explicit references to %AH for an i8 remainder instruction can lead to references to %AH in a REX prefixed instruction, which causes things to blow up. Do the same thing in FastISel as we do for DAG isel and instead shift %AX right by 8 bits and then extract the 8-bit subreg from that result. rdar://14203849 http://llvm.org/bugs/show_bug.cgi?id=16105 llvm-svn: 185899
* Make BinaryRef output correctly in case of empty data.Sean Silva2013-07-096-1/+68
| | | | | | | Previously, it would simply output nothing, but it should output an empty string `""`. llvm-svn: 185894
* Style fixes: remove unnecessary braces for one-statement if blocks, no else ↵Stephen Lin2013-07-091-54/+30
| | | | | | after return, etc. No funcionality change. llvm-svn: 185893
* Revert "DebugInfo: remove unused helper function getDICompositeType."Eric Christopher2013-07-092-0/+14
| | | | | | | This reverts commit r185876 as the functions appear to still be used by dragonegg. llvm-svn: 185890
* Fix commentEli Bendersky2013-07-081-3/+2
| | | | llvm-svn: 185888
* This patch changes the saved IRBuilder insert point from ↵Nadav Rotem2013-07-081-1/+2
| | | | | | | | | | BasicBlock::iterator to AssertingVH. Commit 185883 fixes a bug in the IRBuilder that should fix the ASan bot. AssertingVH can help in exposing some RAUW problems. Thanks Ben and Alexey! llvm-svn: 185886
* [objc-arc] Fix assertion in EraseInstruction so that noop on null calls when ↵Michael Gottesman2013-07-081-1/+3
| | | | | | | | passed null do not trigger the assert. The specific case of interest is when objc_retainBlock is passed null. llvm-svn: 185885
* Fix a bug in IRBuilder::ClearInsertionPoint. The IR Builder needs to reset ↵Nadav Rotem2013-07-081-0/+1
| | | | | | both the BB and the insert point inside the BB. llvm-svn: 185883
* Don't run internalize if we're outputing bit-code and not an object file.Bill Wendling2013-07-081-2/+4
| | | | | | | | | | The problem with running internalize before we're ready to output an object file is that it may change a 'weak' symbol into an internal one, but that symbol could be needed by an external object file --- e.g. with arclite. <rdar://problem/14334895> llvm-svn: 185882
* DebugInfo: remove unused helper function getDICompositeType.Manman Ren2013-07-082-14/+0
| | | | llvm-svn: 185876
* CEHCK->CHECK typo fix.Eric Christopher2013-07-081-4/+4
| | | | llvm-svn: 185875
* Fix up whitespace.Eric Christopher2013-07-081-36/+36
| | | | llvm-svn: 185874
* Stop emitting weak symbols into the "coal" sections.Bill Wendling2013-07-083-10/+83
| | | | | | | | | | | | | | | | | The Mach-O linker has been able to support the weak-def bit on any symbol for quite a while now. The compiler however continued to place these symbols into a "coal" section, which required the linker to map them back to the base section name. Replace the sections like this: __TEXT/__textcoal_nt instead use __TEXT/__text __TEXT/__const_coal instead use __TEXT/__const __DATA/__datacoal_nt instead use __DATA/__data <rdar://problem/14265330> llvm-svn: 185872
* No ',' between programs.Eric Christopher2013-07-082-2/+2
| | | | llvm-svn: 185867
* Update comment to avoid mentioning DbgValues which is an instanceEric Christopher2013-07-081-1/+1
| | | | | | variable later in the class. llvm-svn: 185866
* Revert r185852.Manman Ren2013-07-084-18/+9
| | | | llvm-svn: 185861
* Find xdot or xdot.py.Matt Arsenault2013-07-086-35/+40
| | | | | | Ubuntu installs this as xdot, so finding xdot.py would fail. llvm-svn: 185860
* Allow llvm_find_program to find alternate namesMatt Arsenault2013-07-081-1/+2
| | | | llvm-svn: 185859
* [PowerPC] Always use "assembler dialect" 1Ulrich Weigand2013-07-0810-42/+65
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A setting in MCAsmInfo defines the "assembler dialect" to use. This is used by common code to choose between alternatives in a multi-alternative GNU inline asm statement like the following: __asm__ ("{sfe|subfe} %0,%1,%2" : "=r" (out) : "r" (in1), "r" (in2)); The meaning of these dialects is platform specific, and GCC defines those for PowerPC to use dialect 0 for old-style (POWER) mnemonics and 1 for new-style (PowerPC) mnemonics, like in the example above. To be compatible with inline asm used with GCC, LLVM ought to do the same. Specifically, this means we should always use assembler dialect 1 since old-style mnemonics really aren't supported on any current platform. However, the current LLVM back-end uses: AssemblerDialect = 1; // New-Style mnemonics. in PPCMCAsmInfoDarwin, and AssemblerDialect = 0; // Old-Style mnemonics. in PPCLinuxMCAsmInfo. The Linux setting really isn't correct, we should be using new-style mnemonics everywhere. This is changed by this commit. Unfortunately, the setting of this variable is overloaded in the back-end to decide whether or not we are on a Darwin target. This is done in PPCInstPrinter (the "SyntaxVariant" is initialized from the MCAsmInfo AssemblerDialect setting), and also in PPCMCExpr. Setting AssemblerDialect to 1 for both Darwin and Linux no longer allows us to make this distinction. Instead, this patch uses the MCSubtargetInfo passed to createPPCMCInstPrinter to distinguish Darwin targets, and ignores the SyntaxVariant parameter. As to PPCMCExpr, this patch adds an explicit isDarwin argument that needs to be passed in by the caller when creating a target MCExpr. (To do so this patch implicitly also reverts commit 184441.) llvm-svn: 185858
* PPC: Mark vector CC action for SETO and SETONE as ExpandHal Finkel2013-07-082-0/+20
| | | | | | | | Another bug found by llvm-stress! This fixes hitting llvm_unreachable("Invalid integer vector compare condition"); at the end of getVCmpInst in PPCISelDAGToDAG. llvm-svn: 185855
* IR headers moved to llvm/IR some aeons ago, update documentation.Benjamin Kramer2013-07-083-16/+16
| | | | llvm-svn: 185854
* Add a comment to this change, requested by Eric Christopher.Joey Gouly2013-07-082-0/+5
| | | | llvm-svn: 185853
* StringRef: add DenseMapInfo for StringRef.Manman Ren2013-07-084-9/+18
| | | | | | | | Remove the implementation in include/llvm/Support/YAMLTraits.h. Added a DenseMap type DITypeHashMap in DebugInfo.h: DenseMap<std::pair<StringRef, unsigned>, MDNode*> llvm-svn: 185852
* [ADT/NullablePtr] Allow implicit conversion of NullablePtr<OtherT> -> ↵Argyrios Kyrtzidis2013-07-081-0/+10
| | | | | | NullablePtr<T> if OtherT is derived from T. llvm-svn: 185851
* Reland "Use Clang's __has_* macros in Compiler.h ..." with fixesReid Kleckner2013-07-081-16/+40
| | | | | | | | | | | | | | | This reverts r185841 and relands r185831 without using __has_attribute(const). Clang prior to r161767 (between 3.1 and 3.2) does not accept __has_attribute(const) due to rdar://10253857. __const and __const__ are both keyword aliases of const, so they don't work either. I was able to repro the buildbot failure using clang 3.1 and this patch fixes it. Various important versions of XCode use clang 2.9-ish, so this workaround is necessary. llvm-svn: 185850
* Update docs to say that a FunctionPass should not inspect other functions ↵Stephen Lin2013-07-081-1/+1
| | | | | | | | than the one being processed. Please let me know if you disagree with this assessment (no one has yet, after asking on llvm-commits and LLVMDev) and I will revert. llvm-svn: 185848
* Debug Info: clean up usage of Verify.Manman Ren2013-07-083-20/+20
| | | | | | | No functionality change. It should suffice to check the type of a debug info metadata, instead of calling Verify. llvm-svn: 185847
* ARM: Improve codegen for generic vselect.Jim Grosbach2013-07-083-30/+57
| | | | | | | | Fall back to by-element insert rather than building it up on the stack. rdar://14351991 llvm-svn: 185846
* DebugInfo: Correct comment & re-format a nearby loopDavid Blaikie2013-07-081-5/+3
| | | | llvm-svn: 185844
* Fix a SCEV update problem.Shuxin Yang2013-07-082-2/+44
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The symptom is seg-fault, and the root cause is that a SCEV contains a SCEVUnknown which has null-pointer to a llvm::Value. This is how the problem take place: =================================== 1). In the pristine input IR, there are two relevant instrutions Op1 and Op2, Op1's corresponding SCEV (denoted as SCEV(op1)) is a SCEVUnknown, and SCEV(Op2) contains SCEV(Op1). None of these instructions are dead. Op1 : V1 = ... ... Op2 : V2 = ... // directly or indirectly (data-flow) depends on Op1 2) Optimizer (LSR in my case) generates an instruction holding the equivalent value of Op1, making Op1 dead. Op1': V1' = ... Op1: V1 = ... ; now dead) Op2 : V2 = ... //Now deps on Op1', but the SCEV(Op2) still contains SCEV(Op1) 3) Op1 is deleted, and call-back function is called to reset SCEV(Op1) to indicate it is invalid. However, SCEV(Op2) is not invalidated as well. 4) Following pass get the cached, invalid SCEV(Op2), and try to manipulate it, and cause segfault. The fix: ======== It seems there is no clean yet inexpensive fix. I write to dev-list soliciting good solution, unforunately no ack. So, I decide to fix this problem in a brute-force way: When ScalarEvolution::getSCEV is called, check if the cached SCEV contains a invalid SCEVUnknow, if yes, remove the cached SCEV, and re-evaluate the SCEV from scratch. I compile buch of big *.c and *.cpp, fortunately, I don't see any increase in compile time. Misc: ===== The reduced test-case has 2357 lines of code+other-stuff, too big to commit. rdar://14283433 llvm-svn: 185843
* DebugInfo: Simplify Address Pool index handling.David Blaikie2013-07-081-5/+3
| | | | | | | | | | Since the pool indexes are necessarily sequential and contiguous, just insert things in the right place rather than having to sort the sequence after the fact. No functionality change. llvm-svn: 185842
* Revert: "Use Clang's __has_* macros in Compiler.h to test for features"Quentin Colombet2013-07-081-38/+16
| | | | | | This reverts r185831 and 185833. llvm-svn: 185841
* PPC: Mark vector FREM as Expand by defaultHal Finkel2013-07-082-0/+9
| | | | | | | Another bug found by llvm-stress! This fixes crashing with: LLVM ERROR: Cannot select: v4f32 = frem ... llvm-svn: 185840
* clang-format this enum.Rafael Espindola2013-07-081-21/+20
| | | | llvm-svn: 185835
* We now always create files with the correct permissions. Simplify the interface.Rafael Espindola2013-07-084-105/+2
| | | | llvm-svn: 185834
* Attempt to fix Compiler.h for some self-hosting botsReid Kleckner2013-07-081-1/+1
| | | | | | | I tested r185831 by self-hosting clang with a recent clang, and got no warnings. I haven't been able to reproduce the problem locally. llvm-svn: 185833
* Create files with the correct permission instead of changing it afterwards.Rafael Espindola2013-07-081-9/+6
| | | | | | No intended functionality change. llvm-svn: 185832
* Use Clang's __has_* macros in Compiler.h to test for featuresReid Kleckner2013-07-081-16/+38
| | | | | | | | | | | | | | | | | | When targetting Windows, clang does not define __GNUC__, and as a result we don't use our attributes with it. This leads to warnings about unused functions that are already annotated with LLVM_ATTRIBUTE_UNUSED. Rather than testing for __clang__, we can use its __has_attribute and __has_builtin macros directlty. While I'm here, conditionally define and use __GNUC_PREREQ for gcc version checks. Spelling the check out with three comparisons is verbose and error prone. Reviewers: aaron.ballman Differential Revision: http://llvm-reviews.chandlerc.com/D1080 llvm-svn: 185831
* Create files with the correct permission instead of changing it afterwards.Rafael Espindola2013-07-081-22/+7
| | | | | | Not intended functionality change. llvm-svn: 185830
* [PowerPC] Support time base instructionsUlrich Weigand2013-07-082-0/+15
| | | | | | | | This adds support for the old-style time base instructions; while new programs are supposed to use mfspr, the mftb instructions are still supported and in use by existing assembler files. llvm-svn: 185829
* [PowerPC] Support basic compare mnemonicsUlrich Weigand2013-07-084-1/+62
| | | | | | | | | | | | | | | | | This adds support for the basic mnemoics (with the L operand) for the fixed-point compare instructions. These are defined as aliases for the already existing CMPW/CMPD patterns, depending on the value of L. This requires use of InstAlias patterns with immediate literal operands. To make this work, we need two further changes: - define a RegisterPrefix, because otherwise literals 0 and 1 would be parsed as literal register names - provide a PPCAsmParser::validateTargetOperandClass routine to recognize immediate literals (like ARM does) llvm-svn: 185826
* Fixes problem when calling llvm-ar from an unmodifiable directory.Manuel Klimek2013-07-081-2/+2
| | | | | | | | | This fixes a regression introduced by r185726: the new call to get a unique file does not prepend the system temporary directory, so we need to anchor on the file that the temporary file gets moved to to ensure we're on the same file system. llvm-svn: 185825
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