Commit Graph

1886 Commits

Author SHA1 Message Date
Eli Bendersky 17233946bc Refactor generic Asm directive parsing.
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.

llvm-svn: 172568
2013-01-15 22:59:42 +00:00
Eli Bendersky e6f4c68373 Now GenericAsmParser and AsmParser are no longer friends, GenericAsmParser can
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.

llvm-svn: 172491
2013-01-14 23:43:18 +00:00
Eli Bendersky 382741283f Properly encapsulate additional methods and data from AsmParser.
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.

llvm-svn: 172490
2013-01-14 23:22:36 +00:00
Eli Bendersky 0a8fbdd015 Move CheckForValidSection to the MCAsmParser interface.
Now that it behaves itself in terms of streamer independence (r172450), this
method can be moved to MCAsmParser to be available to all extensions,
overriding, etc.

-- -This line, and those below, will be ignored--

M    lib/MC/MCParser/AsmParser.cpp
M    include/llvm/MC/MCParser/MCAsmParser.h

llvm-svn: 172451
2013-01-14 19:15:01 +00:00
Eli Bendersky cbb2514d51 Expose an InitToTextSection through MCStreamer.
The aim of this patch is to fix the following piece of code in the
platform-independent AsmParser:

void AsmParser::CheckForValidSection() {
  if (!ParsingInlineAsm && !getStreamer().getCurrentSection()) {
    TokError("expected section directive before assembly directive");
    Out.SwitchSection(Ctx.getMachOSection(
                        "__TEXT", "__text",
                        MCSectionMachO::S_ATTR_PURE_INSTRUCTIONS,
                        0, SectionKind::getText()));
  }
}

This was added for the "-n" option of llvm-mc.

The proposed fix adds another virtual method to MCStreamer, called
InitToTextSection. Conceptually, it's similar to the existing
InitSections which initializes all common sections and switches to
text. The new method is implemented by each platform streamer in a way
that it sees fit. So AsmParser can now do this:

void AsmParser::CheckForValidSection() {
  if (!ParsingInlineAsm && !getStreamer().getCurrentSection()) {
    TokError("expected section directive before assembly directive");
    Out.InitToTextSection();
  }
}

Which is much more reasonable.

llvm-svn: 172450
2013-01-14 19:04:57 +00:00
Eli Bendersky a7b905eeaa Move ParseMacroArgument to the MCAsmParser interfance.
Since it's used by extensions. One further step to fully decoupling
GenericAsmParser from an intimate knowledge of the internals of AsmParser,
pointing it to the MCASmParser interface instead (like all other parser
extensions do).

Since this change moves the MacroArgument type to the interface header, it's
renamed to be a bit more descriptive in a general context.

llvm-svn: 172449
2013-01-14 19:00:26 +00:00
Eli Bendersky c2f6f920b9 Encapsulate the MacroEnabled flag in AsmParser behind accessor methods.
The methods are also exposed via the MCAsmParser interface, which allows more
than one client to control them. Previously, GenericAsmParser was playing with
a member var in AsmParser directly (by virtue of being its friend).

llvm-svn: 172440
2013-01-14 18:08:41 +00:00
Dmitri Gribenko 226fea5bd6 Remove redundant 'llvm::' qualifications
llvm-svn: 172358
2013-01-13 16:01:15 +00:00
Eli Bendersky 03872a3a2e Stop hiding the interface-exposed EatToEndOfStatement (see r172276).
llvm-svn: 172277
2013-01-12 00:23:24 +00:00
Eli Bendersky 0cf0cb9247 Make ParseIdentifier a public method instead of private.
The MCAsmParser interface defines ParseIdentifier is public. There's no reason
whatsoever for AsmParser (which implements the MCAsmParser interface) to hide
this method.

This is all part of a bigger scheme. Several asm parsing "extensions" use the
main parser properly through the MCAsmParser interface. However,
GenericAsmParser has much more exclusive access and uses implementation details
from the concrete implementation - AsmParser, in which it is also declared as
a friend. This makes for overly coupled code, and even makes it hard to split
GenericAsmParser into a separate file. There's no reason why GenericAsmParser
shouldn't be able to access AsmParser through an abstract interface, as long
as it's actually registered as an extension.

llvm-svn: 172276
2013-01-12 00:05:00 +00:00
Eli Bendersky 9652272db9 Proof of concept moving of generic directive parsing from AsmParser to the
GenericAsmParser extension, where a lot of directives are already being parsed.
The end goal is having just a single place (and a single lookup table) for
all directive parsing.

llvm-svn: 172268
2013-01-11 22:55:28 +00:00
NAKAMURA Takumi 2abe564806 Revert r172153, "llvm/lib/MC/MCParser/AsmParser.cpp: [ms-inline-asm] Fix a couple of undefined behaviors. Operand->needAddressOf() is not initialized at !Operand->isReg()."
It has been redundant since r172157.

llvm-svn: 172166
2013-01-11 02:50:09 +00:00
NAKAMURA Takumi 84f349397c llvm/lib/MC/MCParser/AsmParser.cpp: [ms-inline-asm] Fix a couple of undefined behaviors. Operand->needAddressOf() is not initialized at !Operand->isReg().
llvm-svn: 172153
2013-01-11 00:37:35 +00:00
Eli Bendersky 4d21fa05f7 Rename enumerations s/VK/DK/ to conform to naming convention
llvm-svn: 172149
2013-01-10 23:40:56 +00:00
Eli Bendersky 930f73a0dd fix comments a bit
llvm-svn: 172146
2013-01-10 23:32:57 +00:00
Eli Bendersky ec9e3cff22 Remove a couple of if-else chains in parsing directives, replacing them by a
switch. Committed with Jim's and Chris's approval.

llvm-svn: 172136
2013-01-10 22:44:57 +00:00
Chad Rosier a4bc9437a2 [ms-inline asm] Add support for calling functions from inline assembly.
Part of rdar://12991541

llvm-svn: 172121
2013-01-10 22:10:27 +00:00
Adhemerval Zanella 1ae2248e14 PowerPC: EH adjustments
This patch adjust the r171506 to make all DWARF enconding pc-relative
for PPC64. It also adds the R_PPC64_REL32 relocation handling in MCJIT
(since the eh_frame will not generate PIC-relative relocation) and also
adds the emission of stubs created by the TTypeEncoding.

llvm-svn: 171979
2013-01-09 17:08:15 +00:00
Eric Christopher bf7bc4966c Last in the series of removing unnecessary '0' arguments for
address space. Reordered the EmitULEB128IntValue arguments to
make this easier.

llvm-svn: 171949
2013-01-09 03:52:05 +00:00
Eric Christopher e3ab3d0e2c These functions have default arguments of 0 for the last arg. Use
them.

llvm-svn: 171933
2013-01-09 01:57:54 +00:00
Eric Christopher ce0cfce775 These functions have default arguments of 0 for the last arg. Use
them and add one where it seemed obvious that we wanted one.

llvm-svn: 171932
2013-01-09 01:35:34 +00:00
Eli Bendersky 5277120dd0 Simplify the code a bit: MCRelaxableFragment doesn't need a separate getInstSize
method because getContents().size() already covers it. So computeFragmentSize
can use the generic MCEncodedFragment interface when querying both Data and
Relaxable fragments for contents sizes.

No change in functionality

llvm-svn: 171903
2013-01-08 22:05:10 +00:00
Eli Bendersky 0652dfd40c Rename statistic for instruction fragments -> relaxable
llvm-svn: 171872
2013-01-08 17:41:59 +00:00
Eli Bendersky 4d9ada036c Renamed MCInstFragment to MCRelaxableFragment and added some comments.
No change in functionality.

llvm-svn: 171822
2013-01-08 00:22:56 +00:00
Eli Bendersky 802b62871e Add the align_to_end option to .bundle_lock in the MC implementation of aligned
bundling. The document describing this feature and the implementation has also
been updated:

https://sites.google.com/a/chromium.org/dev/nativeclient/pnacl/aligned-bundling-support-in-llvm

llvm-svn: 171797
2013-01-07 21:51:08 +00:00
Chad Rosier f3feab311f [ms-inline asm] Make sure the NullStreamParser doesn't try to emit labels when
parsing MS-style inline assembly.

llvm-svn: 171784
2013-01-07 20:34:12 +00:00
Jordan Rose e8f1eaea8a Change SMRange to be half-open (exclusive end) instead of closed (inclusive)
This is necessary not only for representing empty ranges, but for handling
multibyte characters in the input. (If the end pointer in a range refers to
a multibyte character, should it point to the beginning or the end of the
character in a char array?) Some of the code in the asm parsers was already
assuming this anyway.

llvm-svn: 171765
2013-01-07 19:00:49 +00:00
Adhemerval Zanella 9b0b781395 PowerPC: Fix eh_frame relocation for PIC
This patch fixes the PPC eh_frame definitions for the personality and 
frame unwinding for PIC objects. It makes PIC build correctly creates
relative relocations in the '.rela.eh_frame' segments and thus avoiding
a text relocation that generates a DT_TEXTREL segments in link phase.

llvm-svn: 171506
2013-01-04 19:08:13 +00:00
Pedro Artigas 3383225167 small fixes to enable the reuse of the pass manager across multiple modules
llvm-svn: 171475
2013-01-04 18:04:42 +00:00
Eric Christopher c0fa867c7b Add section information for the DWARF5 split debug proposal
string offset section.

llvm-svn: 171474
2013-01-04 17:59:22 +00:00
Michael J. Spencer 088925ea96 [MC][COFF] Switch the COFF streamer over to using the MCObjectStreamer version of EmitInstruction.
llvm-svn: 171437
2013-01-03 01:09:22 +00:00
Eli Bendersky 75a7a338fc Fix an unitialized member variable that may have caused sporadic failures
for code that wasn't even in bundling mode.

llvm-svn: 170793
2012-12-20 22:51:52 +00:00
Eli Bendersky f483ff9204 Aligned bundling support. Following the discussion here:
http://lists.cs.uiuc.edu/pipermail/llvmdev/2012-December/056754.html

The proposal and implementation are fully documented here:
https://sites.google.com/a/chromium.org/dev/nativeclient/pnacl/aligned-bundling-support-in-llvm

Tests will follow shortly.

llvm-svn: 170718
2012-12-20 19:05:53 +00:00
Roman Divacky ff95a1dc12 Remove MCTargetAsmLexer and its derived classes now that edis,
its only user, is gone.

llvm-svn: 170699
2012-12-20 14:43:30 +00:00
Roman Divacky e3d323052f Remove edis - the enhanced disassembler. Fixes PR14654.
llvm-svn: 170578
2012-12-19 19:55:47 +00:00
Kevin Enderby 85cf531593 Add to the disassembler C API an option to print the disassembled
instructions in the assembly code variant if one exists.

The intended use for this is so tools like lldb and darwin's otool(1)
can be switched to print Intel-flavored disassembly.

I discussed extensively this API with Jim Grosbach and we feel
while it may not be fully general, in reality there is only one syntax
for each assembly with the exception of X86 which has exactly
two for historical reasons.

rdar://10989182

llvm-svn: 170477
2012-12-18 23:47:28 +00:00
Eric Christopher 79f165699d Formatting.
llvm-svn: 170394
2012-12-18 00:42:26 +00:00
Eric Christopher 906da23229 Add support for passing -main-file-name all the way through to
the assembler.

Part of PR14624

llvm-svn: 170390
2012-12-18 00:31:01 +00:00
Eric Christopher a7c3273e85 Cleanup formatting and whitespace.
llvm-svn: 170389
2012-12-18 00:30:54 +00:00
Reed Kotler 0c1745e56a EmitDebugLabel should by default be the same as EmitLabel everywhere.
It must be explicity set in MCPureStreamer because otherwise it will
inherit incorrectly from the parent.

llvm-svn: 170383
2012-12-17 23:41:45 +00:00
Eli Bendersky d371eb3060 fix indentation
llvm-svn: 170381
2012-12-17 22:50:56 +00:00
Chandler Carruth 10700aad85 Prepare LLVM to fix PR14625, exposing a hook in MCContext to manage the
compilation directory.

This defaults to the current working directory, just as it always has,
but now an assembler can choose to override it with a custom directory.
I've taught llvm-mc about this option and added a test case.

llvm-svn: 170371
2012-12-17 21:32:42 +00:00
Tim Northover 5edabc131a Teach MachO which sections contain code
llvm-svn: 170349
2012-12-17 17:59:32 +00:00
NAKAMURA Takumi c7146e251d MCPureStreamer.cpp: Try to fix build, pruning EmitDebugLabel().
llvm-svn: 170280
2012-12-16 04:23:20 +00:00
Reed Kotler aee4d5d194 This patch is needed to make c++ exceptions work for mips16.
Mips16 is really a processor decoding mode (ala thumb 1) and in the same
program, mips16 and mips32 functions can exist and can call each other.

If a jal type instruction encounters an address with the lower bit set, then
the processor switches to mips16 mode (if it is not already in it). If the
lower bit is not set, then it switches to mips32 mode.

The linker knows which functions are mips16 and which are mips32.
When relocation is performed on code labels, this lower order bit is
set if the code label is a mips16 code label.

In general this works just fine, however when creating exception handling
tables and dwarf, there are cases where you don't want this lower order
bit added in.

This has been traditionally distinguished in gas assembly source by using a
different syntax for the label.

lab1:      ; this will cause the lower order bit to be added
lab2=.     ; this will not cause the lower order bit to be added

In some cases, it does not matter because in dwarf and debug tables
the difference of two labels is used and in that case the lower order
bits subtract each other out.

To fix this, I have added to mcstreamer the notion of a debuglabel.
The default is for label and debug label to be the same. So calling
EmitLabel and EmitDebugLabel produce the same result.

For various reasons, there is only one set of labels that needs to be
modified for the mips exceptions to work. These are the "$eh_func_beginXXX" 
labels.

Mips overrides the debug label suffix from ":" to "=." .

This initial patch fixes exceptions. More changes most likely
will be needed to DwarfCFException to make all of this work
for actual debugging. These changes will be to emit debug labels in some
places where a simple label is emitted now.

Some historical discussion on this from gcc can be found at:
http://gcc.gnu.org/ml/gcc-patches/2008-08/msg00623.html
http://gcc.gnu.org/ml/gcc-patches/2008-11/msg01273.html 

llvm-svn: 170279
2012-12-16 04:00:45 +00:00
Pedro Artigas b95c53e216 Add more reset methods to make all objects that the backend may use for outputting code have a reset, some are not used but were declared for completeness
llvm-svn: 170227
2012-12-14 18:52:11 +00:00
Bill Schmidt 9f0b4ec0f5 This patch improves the 64-bit PowerPC InitialExec TLS support by providing
for a wider range of GOT entries that can hold thread-relative offsets.
This matches the behavior of GCC, which was not documented in the PPC64 TLS
ABI.  The ABI will be updated with the new code sequence.

Former sequence:

  ld 9,x@got@tprel(2)
  add 9,9,x@tls

New sequence:

  addis 9,2,x@got@tprel@ha
  ld 9,x@got@tprel@l(9)
  add 9,9,x@tls

Note that a linker optimization exists to transform the new sequence into
the shorter sequence when appropriate, by replacing the addis with a nop
and modifying the base register and relocation type of the ld.

llvm-svn: 170209
2012-12-14 17:02:38 +00:00
Pedro Artigas 7212ee4534 Make the MCStreamer have a reset method and call that after finalization of the asm printer,
also changed MCContext to a single reset only method for simplicity as requested on the list

llvm-svn: 170041
2012-12-12 22:59:46 +00:00
Chad Rosier 149e8e042f [ms-inline asm] Make sure we fail gracefully on parse errors. Parse errors
should only occur on invalid input.  Instruction matching errors aren't
unexpected, so we can't rely on the AsmParsers HadError variable directly.
rdar://12840278

llvm-svn: 170037
2012-12-12 22:45:52 +00:00
Eli Bendersky e11ab3aafe Make naming consistent, add comments and sanity asserts
llvm-svn: 170007
2012-12-12 19:54:05 +00:00
Bill Schmidt 24b8dd6eb7 This patch implements local-dynamic TLS model support for the 64-bit
PowerPC target.  This is the last of the four models, so we now have 
full TLS support.

This is mostly a straightforward extension of the general dynamic model.
I had to use an additional Chain operand to tie ADDIS_DTPREL_HA to the
register copy following ADDI_TLSLD_L; otherwise everything above the
ADDIS_DTPREL_HA appeared dead and was removed.

As before, there are new test cases to test the assembly generation, and
the relocations output during integrated assembly.  The expected code
gen sequence can be read in test/CodeGen/PowerPC/tls-ld.ll.

There are a couple of things I think can be done more efficiently in the
overall TLS code, so there will likely be a clean-up patch forthcoming;
but for now I want to be sure the functionality is in place.

Bill

llvm-svn: 170003
2012-12-12 19:29:35 +00:00
Logan Chien 4dd14fb5eb Add ARM NONE and PREL31 relocation types.
Add R_ARM_NONE and R_ARM_PREL31 relocation types
to MCExpr.  Both of them will be used while
generating .ARM.extab and .ARM.exidx sections.

llvm-svn: 169965
2012-12-12 07:14:46 +00:00
Bill Schmidt c56f1d34bc This patch implements the general dynamic TLS model for 64-bit PowerPC.
Given a thread-local symbol x with global-dynamic access, the generated
code to obtain x's address is:

     Instruction                            Relocation            Symbol
  addis ra,r2,x@got@tlsgd@ha           R_PPC64_GOT_TLSGD16_HA       x
  addi  r3,ra,x@got@tlsgd@l            R_PPC64_GOT_TLSGD16_L        x
  bl __tls_get_addr(x@tlsgd)           R_PPC64_TLSGD                x
                                       R_PPC64_REL24           __tls_get_addr
  nop
  <use address in r3>

The implementation borrows from the medium code model work for introducing
special forms of ADDIS and ADDI into the DAG representation.  This is made
slightly more complicated by having to introduce a call to the external
function __tls_get_addr.  Using the full call machinery is overkill and,
more importantly, makes it difficult to add a special relocation.  So I've
introduced another opcode GET_TLS_ADDR to represent the function call, and
surrounded it with register copies to set up the parameter and return value.

Most of the code is pretty straightforward.  I ran into one peculiarity
when I introduced a new PPC opcode BL8_NOP_ELF_TLSGD, which is just like
BL8_NOP_ELF except that it takes another parameter to represent the symbol
("x" above) that requires a relocation on the call.  Something in the 
TblGen machinery causes BL8_NOP_ELF and BL8_NOP_ELF_TLSGD to be treated
identically during the emit phase, so this second operand was never
visited to generate relocations.  This is the reason for the slightly
messy workaround in PPCMCCodeEmitter.cpp:getDirectBrEncoding().

Two new tests are included to demonstrate correct external assembly and
correct generation of relocations using the integrated assembler.

Comments welcome!

Thanks,
Bill

llvm-svn: 169910
2012-12-11 20:30:11 +00:00
Eli Bendersky 0f74f173f7 Remove the RelaxAll overrule in MCAssembler::fixupNeedsRelaxation,
because that method is only getting called for MCInstFragment. These
fragments aren't even generated when RelaxAll is set, which is why the
flag reference here is superfluous. Removing it simplifies the code
with no harmful effects.

An assertion is added higher up to make sure this path is never
reached.

llvm-svn: 169886
2012-12-11 17:16:00 +00:00
Lang Hames 517fc8b264 Defer call to InitSections until after MCContext has been initialized. If
InitSections is called before the MCContext is initialized it could cause
duplicate temporary symbols to be emitted later (after context initialization
resets the temporary label counter).

llvm-svn: 169785
2012-12-10 22:49:11 +00:00
Eli Bendersky 4c7296fd1a Cleanup formatting, comments and naming.
llvm-svn: 169762
2012-12-10 20:13:43 +00:00
Eli Bendersky c01322ee90 This patch adds statistics for other non-DWARF fragments emitted by
the assembler. This is useful in order to know how the numbers add up,
since in particular the Align fragments account for a non-trivial
portion of the emitted fragments (especially on -O0 which sets
relax-all).

llvm-svn: 169747
2012-12-10 18:59:39 +00:00
Jim Grosbach 0ca9d5b7a5 Add C API for specifying CPU to the disassembler.
It was a nasty oversight that we didn't include this when we added this
API in the first place. Blech.

rdar://12839439

llvm-svn: 169653
2012-12-07 23:53:27 +00:00
Eli Bendersky 84b2a79570 Make the contents of encoded sections SmallVector<char, N> instead of
SmallString. This makes it possible to use the length-erased SmallVectorImpl
in the interface without imposing buffer size. Thus, the size of MCInstFragment
is back down since a preallocated 8-byte contents buffer is enough.

It would be generally a good idea to rid all the fragments of SmallString as
contents, because a vector just makes more sense.

llvm-svn: 169644
2012-12-07 22:06:56 +00:00
Eli Bendersky a31a894eed Refactor MCInstFragment and MCDataFragment to adhere to a common interface,
which removes code duplication and prepares the ground for future additions.

Full discussion:
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20121203/158233.html

llvm-svn: 169626
2012-12-07 19:13:57 +00:00
Eli Bendersky 2ccd044c22 Add separate statistics for Data and Inst fragments emitted during relaxation.
Also fixes a test that was overly-sensitive to the exact order of statistics
emitted.

llvm-svn: 169619
2012-12-07 17:59:21 +00:00
Eli Bendersky 131186c11a Some common functionality from WinCOFFStreamer::EmitAssignment can be now
delegated to MCObjectStreamer.

llvm-svn: 169617
2012-12-07 17:55:28 +00:00
Eli Bendersky ea2824dc88 Lift EmitAssignment into MCObjectStreamer which gets rid of at least three
duplicate implementations in format-specific streamers.

llvm-svn: 169613
2012-12-07 17:42:41 +00:00
Tim Northover 5cc3dc86bb Added Mapping Symbols for ARM ELF
Before this patch, when you objdump an LLVM-compiled file, objdump tried to
decode data-in-code sections as if they were code.  This patch adds the missing
Mapping Symbols, as defined by "ELF for the ARM Architecture" (ARM IHI 0044D).

Patch based on work by Greg Fitzgerald.

llvm-svn: 169609
2012-12-07 16:50:23 +00:00
Logan Chien 59ff070376 Split MCELFStreamer into a header file.
llvm-svn: 169603
2012-12-07 15:50:40 +00:00
Pedro Artigas e84b13f039 fixed valgrind issues of prior commit, this change applies r169456 changes back to the tree with fixes. on darwin no valgrind issues exist in the tests that used to fail.
original change description:

change MCContext to work on the doInitialization/doFinalization model

reviewed by Evan Cheng <evan.cheng@apple.com>

llvm-svn: 169553
2012-12-06 22:12:44 +00:00
NAKAMURA Takumi d985d76040 Revert r169456, "change MCContext to work on the doInitialization/doFinalization model"
It broke many builders.

llvm-svn: 169462
2012-12-06 02:00:13 +00:00
Pedro Artigas bf7d3bab26 change MCContext to work on the doInitialization/doFinalization model
reviewed by Evan Cheng <evan.cheng@apple.com>

llvm-svn: 169456
2012-12-06 00:50:55 +00:00
Eli Bendersky 02631c4e31 Change std::vector to SmallVector<4> and remove some unused methods.
This is more consistent with other vectors in this code. In addition, I ran some
tests compiling a large program and >96% of fragments have 4 or less fixups, so
SmallVector<4> is a good optimization.

llvm-svn: 169433
2012-12-05 22:11:02 +00:00
Benjamin Kramer 507aca835e Try to unbreak the build on hosts that don't transitively pull in a definition for int64_t.
Also use the portable (ugly) format string macros, for MSVC compatibility.

llvm-svn: 169396
2012-12-05 18:31:11 +00:00
Kevin Enderby 168ffb36a5 Added a option to the disassembler to print immediates as hex.
This is for the lldb team so most of but not all of the values are
to be printed as hex with this option.  Some small values like the
scale in an X86 address were requested to printed in decimal
without the leading 0x.

There may be some tweaks need to places that may still be in
decimal that they want in hex.  Specially for arm.  I made my best
guess.  Any tweaks from here should be simple.

I also did the best I know now with help from the C++ gurus
creating the cleanest formatImm() utility function and containing
the changes.  But if someone has a better idea to make something
cleaner I'm all ears and game for changing the implementation.

rdar://8109283

llvm-svn: 169393
2012-12-05 18:13:19 +00:00
Bill Schmidt ca4a0c9dbd This patch introduces initial-exec model support for thread-local storage
on 64-bit PowerPC ELF.

The patch includes code to handle external assembly and MC output with the
integrated assembler.  It intentionally does not support the "old" JIT.

For the initial-exec TLS model, the ABI requires the following to calculate
the address of external thread-local variable x:

 Code sequence            Relocation                  Symbol
  ld 9,x@got@tprel(2)      R_PPC64_GOT_TPREL16_DS      x
  add 9,9,x@tls            R_PPC64_TLS                 x

The register 9 is arbitrary here.  The linker will replace x@got@tprel
with the offset relative to the thread pointer to the generated GOT
entry for symbol x.  It will replace x@tls with the thread-pointer
register (13).

The two test cases verify correct assembly output and relocation output
as just described.

PowerPC-specific selection node variants are added for the two
instructions above:  LD_GOT_TPREL and ADD_TLS.  These are inserted
when an initial-exec global variable is encountered by
PPCTargetLowering::LowerGlobalTLSAddress(), and later lowered to
machine instructions LDgotTPREL and ADD8TLS.  LDgotTPREL is a pseudo
that uses the same LDrs support added for medium code model's LDtocL,
with a different relocation type.

The rest of the processing is straightforward.

llvm-svn: 169281
2012-12-04 16:18:08 +00:00
Chandler Carruth 802d755533 Sort includes for all of the .h files under the 'lib' tree. These were
missed in the first pass because the script didn't yet handle include
guards.

Note that the script is now able to handle all of these headers without
manual edits. =]

llvm-svn: 169224
2012-12-04 07:12:27 +00:00
Chandler Carruth ed0881b2a6 Use the new script to sort the includes of every file under lib.
Sooooo many of these had incorrect or strange main module includes.
I have manually inspected all of these, and fixed the main module
include to be the nearest plausible thing I could find. If you own or
care about any of these source files, I encourage you to take some time
and check that these edits were sensible. I can't have broken anything
(I strictly added headers, and reordered them, never removed), but they
may not be the headers you'd really like to identify as containing the
API being implemented.

Many forward declarations and missing includes were added to a header
files to allow them to parse cleanly when included first. The main
module rule does in fact have its merits. =]

llvm-svn: 169131
2012-12-03 16:50:05 +00:00
Daniel Dunbar 40f1d85807 MC/AsmParser: Avoid unnecessary use of SourceMgr::FindBufferForLoc()
- Each macro instantiation introduces a new buffer, and FindBufferForLoc() is
   linear, so previously macro instantiation could be N^2 for some pathological
   inputs.

llvm-svn: 169073
2012-12-01 01:38:48 +00:00
Eric Christopher 3c23009117 Add the rest of the experimental fission sections to MC.
llvm-svn: 168986
2012-11-30 06:47:06 +00:00
Eric Christopher c3b434b76c Add brief support for the fission .debug_info.dwo section for
ELF output.

llvm-svn: 168764
2012-11-28 02:49:38 +00:00
Eric Christopher 27ed8ec126 Add comments.
llvm-svn: 168763
2012-11-28 02:49:34 +00:00
Bill Schmidt 34627e3434 This patch implements medium code model support for 64-bit PowerPC.
The default for 64-bit PowerPC is small code model, in which TOC entries
must be addressable using a 16-bit offset from the TOC pointer.  Additionally,
only TOC entries are addressed via the TOC pointer.

With medium code model, TOC entries and data sections can all be addressed
via the TOC pointer using a 32-bit offset.  Cooperation with the linker
allows 16-bit offsets to be used when these are sufficient, reducing the
number of extra instructions that need to be executed.  Medium code model
also does not generate explicit TOC entries in ".section toc" for variables
that are wholly internal to the compilation unit.

Consider a load of an external 4-byte integer.  With small code model, the
compiler generates:

	ld 3, .LC1@toc(2)
	lwz 4, 0(3)

	.section	.toc,"aw",@progbits
.LC1:
	.tc ei[TC],ei

With medium model, it instead generates:

	addis 3, 2, .LC1@toc@ha
	ld 3, .LC1@toc@l(3)
	lwz 4, 0(3)

	.section	.toc,"aw",@progbits
.LC1:
	.tc ei[TC],ei

Here .LC1@toc@ha is a relocation requesting the upper 16 bits of the
32-bit offset of ei's TOC entry from the TOC base pointer.  Similarly,
.LC1@toc@l is a relocation requesting the lower 16 bits.  Note that if
the linker determines that ei's TOC entry is within a 16-bit offset of
the TOC base pointer, it will replace the "addis" with a "nop", and
replace the "ld" with the identical "ld" instruction from the small
code model example.

Consider next a load of a function-scope static integer.  For small code
model, the compiler generates:

	ld 3, .LC1@toc(2)
	lwz 4, 0(3)

	.section	.toc,"aw",@progbits
.LC1:
	.tc test_fn_static.si[TC],test_fn_static.si
	.type	test_fn_static.si,@object
	.local	test_fn_static.si
	.comm	test_fn_static.si,4,4

For medium code model, the compiler generates:

	addis 3, 2, test_fn_static.si@toc@ha
	addi 3, 3, test_fn_static.si@toc@l
	lwz 4, 0(3)

	.type	test_fn_static.si,@object
	.local	test_fn_static.si
	.comm	test_fn_static.si,4,4

Again, the linker may replace the "addis" with a "nop", calculating only
a 16-bit offset when this is sufficient.

Note that it would be more efficient for the compiler to generate:

	addis 3, 2, test_fn_static.si@toc@ha
        lwz 4, test_fn_static.si@toc@l(3)

The current patch does not perform this optimization yet.  This will be
addressed as a peephole optimization in a later patch.

For the moment, the default code model for 64-bit PowerPC will remain the
small code model.  We plan to eventually change the default to medium code
model, which matches current upstream GCC behavior.  Note that the different
code models are ABI-compatible, so code compiled with different models will
be linked and execute correctly.

I've tested the regression suite and the application/benchmark test suite in
two ways:  Once with the patch as submitted here, and once with additional
logic to force medium code model as the default.  The tests all compile
cleanly, with one exception.  The mandel-2 application test fails due to an
unrelated ABI compatibility with passing complex numbers.  It just so happens
that small code model was incredibly lucky, in that temporary values in 
floating-point registers held the expected values needed by the external
library routine that was called incorrectly.  My current thought is to correct
the ABI problems with _Complex before making medium code model the default,
to avoid introducing this "regression."

Here are a few comments on how the patch works, since the selection code
can be difficult to follow:

The existing logic for small code model defines three pseudo-instructions:
LDtoc for most uses, LDtocJTI for jump table addresses, and LDtocCPT for
constant pool addresses.  These are expanded by SelectCodeCommon().  The
pseudo-instruction approach doesn't work for medium code model, because
we need to generate two instructions when we match the same pattern.
Instead, new logic in PPCDAGToDAGISel::Select() intercepts the TOC_ENTRY
node for medium code model, and generates an ADDIStocHA followed by either
a LDtocL or an ADDItocL.  These new node types correspond naturally to
the sequences described above.

The addis/ld sequence is generated for the following cases:
 * Jump table addresses
 * Function addresses
 * External global variables
 * Tentative definitions of global variables (common linkage)

The addis/addi sequence is generated for the following cases:
 * Constant pool entries
 * File-scope static global variables
 * Function-scope static variables

Expanding to the two-instruction sequences at select time exposes the
instructions to subsequent optimization, particularly scheduling.

The rest of the processing occurs at assembly time, in
PPCAsmPrinter::EmitInstruction.  Each of the instructions is converted to
a "real" PowerPC instruction.  When a TOC entry needs to be created, this
is done here in the same manner as for the existing LDtoc, LDtocJTI, and
LDtocCPT pseudo-instructions (I factored out a new routine to handle this).

I had originally thought that if a TOC entry was needed for LDtocL or
ADDItocL, it would already have been generated for the previous ADDIStocHA.
However, at higher optimization levels, the ADDIStocHA may appear in a 
different block, which may be assembled textually following the block
containing the LDtocL or ADDItocL.  So it is necessary to include the
possibility of creating a new TOC entry for those two instructions.

Note that for LDtocL, we generate a new form of LD called LDrs.  This
allows specifying the @toc@l relocation for the offset field of the LD
instruction (i.e., the offset is replaced by a SymbolLo relocation).
When the peephole optimization described above is added, we will need
to do similar things for all immediate-form load and store operations.

The seven "mcm-n.ll" test cases are kept separate because otherwise the
intermingling of various TOC entries and so forth makes the tests fragile
and hard to understand.

The above assumes use of an external assembler.  For use of the
integrated assembler, new relocations are added and used by
PPCELFObjectWriter.  Testing is done with "mcm-obj.ll", which tests for
proper generation of the various relocations for the same sequences
tested with the external assembler.

llvm-svn: 168708
2012-11-27 17:35:46 +00:00
Rafael Espindola cdb9a538d6 Add support for .cfi_register now that it is easy to extent the representation
to support it. Original patch with the parsing and plumbing by the PaX team and
Roman Divacky. I added the bits in MCDwarf.cpp and the test.

llvm-svn: 168565
2012-11-25 15:14:49 +00:00
Benjamin Kramer 9bcb9226f6 libLTO: Add a utility method to initialize the disassemblers.
Necessary to give disassembler users (like darwin's otool) a possibility to
dlopen libLTO and still initialize the required LLVM bits. This used to go
through libMCDisassembler but that's a gross layering violation, the MC layer
can't pull in functions from the targets. Adding a function to libLTO is a bit
of a hack but not worse than exposing other disassembler bits from libLTO.

Fixes PR14362.

llvm-svn: 168545
2012-11-24 16:59:10 +00:00
Rafael Espindola cc0c74a76c Change the representation of MCCFIInstruction.
We now store the Register and Offset directly. MachineLocation is gone (from
this file)!

llvm-svn: 168536
2012-11-24 04:33:48 +00:00
Rafael Espindola 5dce65b21e Give each MCCFIInstruction its own opcode.
This untangles the switch cases of the old Move and RelMove opcodes a bit
and makes it clear how to add new instructions.

llvm-svn: 168534
2012-11-24 03:10:54 +00:00
Rafael Espindola 7a6e441262 Move a bit of duplicated code into a helper function.
llvm-svn: 168533
2012-11-24 02:18:49 +00:00
Rafael Espindola 1c3086cc91 Refactor how MCCFIInstructions are created.
Give MCCFIInstruction a single, private constructor and add helper static
methods that create each type of cfi instruction. This is is preparation
for changing its representation. The representation with a pair
MachineLocations older than MC and has been abused quiet a bit to support
more cfi instructions.

llvm-svn: 168532
2012-11-24 02:01:08 +00:00
Rafael Espindola 9bb247813a Implement .cfi_undefined. Based on a patch from PaX team, updated by
Roman Divacky. I just added the testcase.

llvm-svn: 168520
2012-11-23 16:59:41 +00:00
Akira Hatanaka 64b52d8434 Add relocations used for mips big GOT.
llvm-svn: 168448
2012-11-21 19:50:22 +00:00
Alexey Samsonov 00fd5257a2 Emit relocations from .debug_aranges to .debug_info for asm files
llvm-svn: 167926
2012-11-14 09:55:38 +00:00
Anton Korobeynikov a305ea5511 Add ARM TARGET2 relocation. The testcase will follow with actualy use-case.
Based on the patch by Logan Chien!

llvm-svn: 167633
2012-11-09 20:20:12 +00:00
Kevin Enderby 27121c1543 Fix for PR14264 cause by commit r167237 which did not take into account a
possible buffer change with a .macro directive.

rdar://12637628

llvm-svn: 167408
2012-11-05 21:55:41 +00:00
Kevin Enderby 4eaf8ef5cb Add support for generating dwarf debugging info with assembly files
run through the 'C' preprocessor.  That is pick up the file name
and line numbers from the cpp hash file line comments for the
dwarf file and line numbers tables.

rdar://9275556

llvm-svn: 167237
2012-11-01 17:31:35 +00:00
Chad Rosier 11c42f2d2c [ms-inline asm] Add support for the TYPE operator.
Part of rdar://12576868

llvm-svn: 166790
2012-10-26 18:04:20 +00:00
Chad Rosier e2f03771c4 [ms-inline asm] Have the target AsmParser create the asmrewrite for the offsetof
operator.

llvm-svn: 166779
2012-10-26 16:09:20 +00:00
Chad Rosier f0e8720054 [ms-inline asm] Add support for creating AsmRewrites in the target specific
AsmParser logic.  To be used/tested in a subsequent commit.

llvm-svn: 166714
2012-10-25 20:41:34 +00:00
Adhemerval Zanella f2aceda854 Initial TOC support for PowerPC64 object creation
This patch adds initial PPC64 TOC MC object creation using the small mcmodel
(a single 64K TOC) adding the some TOC relocations (R_PPC64_TOC,
R_PPC64_TOC16, and R_PPC64_TOC16DS).

The addition of 'undefinedExplicitRelSym' hook on 'MCELFObjectTargetWriter'
is meant to avoid the creation of an unreferenced ".TOC." symbol (used in
the .odp creation) as well to set the R_PPC64_TOC relocation target as the
temporary ".TOC." symbol. On PPC64 ABI, the R_PPC64_TOC relocation should
not point to any symbol.

llvm-svn: 166677
2012-10-25 12:27:42 +00:00
Chad Rosier 91c8266200 [ms-inline asm] Create a register operand, rather than a memory operand when we
see the offsetof operator.  Previously, we were matching something like MOVrm
in the front-end and later matching MOVrr in the back-end.  This change makes
things more consistent.  It also fixes cases where we can't match against a 
memory operand as the source (test cases coming).
Part of rdar://12470317

llvm-svn: 166592
2012-10-24 17:22:29 +00:00
Kevin Enderby dccdac6a06 Make branch heavy code for generating marked up disassembly simpler
and easier to read by adding a couple helper functions.  Suggestion by
Chandler Carruth and seconded by Meador Inge!

llvm-svn: 166515
2012-10-23 22:52:52 +00:00
Chad Rosier 37e755cee2 [ms-inline asm] Add an implementation of the offset operator. This is a follow
on patch to r166433.
rdar://12470317

llvm-svn: 166488
2012-10-23 17:43:43 +00:00
Eli Friedman 0f4871d487 [ms-inline-asm] Implement _emit directive (which is roughly equivalent to .byte).
<rdar://problem/12470345>.

llvm-svn: 166451
2012-10-22 23:58:19 +00:00
Kevin Enderby 62183c4e18 Add support for annotated disassembly output for X86 and arm.
Per the October 12, 2012 Proposal for annotated disassembly output sent out by
Jim Grosbach this set of changes implements this for X86 and arm.  The llvm-mc
tool now has a -mdis option to produced the marked up disassembly and a couple
of small example test cases have been added.

rdar://11764962

llvm-svn: 166445
2012-10-22 22:31:46 +00:00
Eli Friedman 15e9b33678 [ms-inline asm] Don't rewrite out parts of an inline-asm skipped by .if 0 and friends.
It's unnecessary and makes the generated assembly less faithful to the original source.

llvm-svn: 166440
2012-10-22 20:50:25 +00:00
Benjamin Kramer a74129adad Symbol hygiene: Make sure declarations and definitions match, make helper functions static.
llvm-svn: 166376
2012-10-20 12:53:26 +00:00
Chad Rosier 3017a06c8f [ms-inline asm] Rename AsmOpRewrite to just AsmRewrite to be more generic. No functional change intended.
llvm-svn: 166360
2012-10-20 01:02:45 +00:00
Chad Rosier eda70b3451 [ms-inline asm] If the state of the parser is ignore, then don't parse the
inline assembly.  Also make sure the remove the ignored statements from the IR.

llvm-svn: 166357
2012-10-20 00:47:08 +00:00
Chad Rosier ce09f6b9ef [ms-inline asm] Continue parsing even when we're in an ignore block.
llvm-svn: 166352
2012-10-19 23:15:00 +00:00
Chad Rosier f1f6a72901 [ms-inline asm] Reset the opcode prior to parsing a statement.
llvm-svn: 166349
2012-10-19 22:57:33 +00:00
Chad Rosier 0f48c55e70 [ms-inline asm] Have the TargetParser callback to Sema to determine the size of
a memory operand.  Retain this information and then add the sizing directives
to the IR.  This allows the backend to do proper instruction selection.

llvm-svn: 166316
2012-10-19 20:57:14 +00:00
Chad Rosier 75f0b2f2bd [ms-inline asm] Add the isParsingInlineAsm() function to the MCAsmTargetParser.
llvm-svn: 166292
2012-10-19 17:57:49 +00:00
Nick Lewycky ac612277cb Pacify -Wnon-virtual-dtor.
llvm-svn: 166270
2012-10-19 07:00:09 +00:00
Chad Rosier d48d078487 [ms-inline asm] Add a size argument to the LookupInlineAsmIdentifier() callback,
which will be used by the asm matcher in the near future.

llvm-svn: 166222
2012-10-18 20:27:15 +00:00
Chad Rosier f641baa030 [ms-inline asm] Have the LookupInlineAsmIdentifier() callback function return a
*NamedDecl.  In turn, build the expressions after we're finished parsing the
asm.  This avoids a crasher if the lookup fails.

llvm-svn: 166212
2012-10-18 19:39:30 +00:00
Chad Rosier 8bce664144 [ms-inline asm] Move most of the AsmParsing logic in clang back into the MC
layer.  Add the ParseMSInlineAsm() function, which is the new interface to 
clang.  Also expose the new MCAsmParserSemaCallback interface, which is used
by the back-end to do name lookup in Sema.  Finally, remove the now defunct
APIs introduced in r165946.

llvm-svn: 166183
2012-10-18 15:49:34 +00:00
Chad Rosier e4ad2a0b96 [ms-inline asm] Add the helper function, isParseringInlineAsm(). To be used in a future commit.
llvm-svn: 166054
2012-10-16 20:16:20 +00:00
Michael Liao d6f3168a08 Check .rela instead of ELF64 for the compensation vaue resetting
llvm-svn: 166051
2012-10-16 19:49:51 +00:00
Chad Rosier f3bc599680 [ms-inline asm] If we parsed a statement and the opcode is valid, then it's an instruction.
llvm-svn: 165955
2012-10-15 19:08:18 +00:00
Chad Rosier 0d6f149e62 [ms-inline asm] Add a few new APIs to the AsmParser class in support of MS-Style
inline assembly.  For the time being, these will be called directly by clang.
However, in the near future I expect these to be sunk back into the MC layer
and more basic APIs (e.g., getClobbers(), getConstraints(), etc.) will be called
by clang.

llvm-svn: 165946
2012-10-15 17:19:13 +00:00
Adhemerval Zanella ef206f19a4 PowerPC: add EmitTCEntry class for TOC creation
This patch replaces the EmitRawText by a EmitTCEntry class (specialized for
each Streamer) in PowerPC64 TOC entry creation.

llvm-svn: 165940
2012-10-15 15:43:14 +00:00
Chad Rosier 4996355592 [ms-inline asm] Remove the MatchInstruction() function. Previously, this was
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.

llvm-svn: 165858
2012-10-13 00:26:04 +00:00
Chad Rosier 126d0b8c4d Whitespace.
llvm-svn: 165540
2012-10-09 20:15:02 +00:00
Eric Christopher a0ad67dad8 Add names for the accelerator table sections so that they can
be emitted if they're wanted on elf platforms.

llvm-svn: 165432
2012-10-08 21:41:30 +00:00
Benjamin Kramer 64ddcb0da6 Hoist some grossly duplicated code from the COFF/ELF/MachO streamers into MCObjectStreamer.
llvm-svn: 165225
2012-10-04 13:12:43 +00:00
Craig Topper 54b69d4c0d Remove template from function that is only used with one type after r165092.
llvm-svn: 165203
2012-10-04 05:18:31 +00:00
Craig Topper 0e6c5b68b6 Fix doxygen comment to match function name.
llvm-svn: 165094
2012-10-03 06:47:18 +00:00
Craig Topper 85e7a40232 Remove unused function that used to get itineraries from SubTargetFeatures. This is done from MCSubTargetInfo these days.
llvm-svn: 165092
2012-10-03 06:26:11 +00:00
Andrew Kaylor feb805fcf2 Support for generating ELF objects on Windows.
This adds 'elf' as a recognized target triple environment value and overrides the default generated object format on Windows platforms if that value is present.  This patch also enables MCJIT tests on Windows using the new environment value.

llvm-svn: 165030
2012-10-02 18:38:34 +00:00
Jim Grosbach 745c52dd4e MachO: direct-to-object attribute for data-in-code markers.
The target backend can support data-in-code load commands even when
the assembler doesn't, or vice-versa. Allow targets to opt-in for
direct-to-object.

PR13973.

llvm-svn: 164974
2012-10-01 22:20:54 +00:00
Benjamin Kramer 4c8af550ad Provide a shortcut for MCObjectStreamer when emitting fills.
Reduces runtime of i386-large-relocations.s by 10x in Release builds, even more
in Debug+Asserts builds.

llvm-svn: 164945
2012-10-01 15:14:14 +00:00
Sylvestre Ledru 91ce36c986 Revert 'Fix a typo 'iff' => 'if''. iff is an abreviation of if and only if. See: http://en.wikipedia.org/wiki/If_and_only_if Commit 164767
llvm-svn: 164768
2012-09-27 10:14:43 +00:00
Sylvestre Ledru 721cffd53a Fix a typo 'iff' => 'if'
llvm-svn: 164767
2012-09-27 09:59:43 +00:00
Craig Topper 2a6a08b1cd Rename virtual table anchors from Anchor() to anchor() for consistency with the rest of the tree.
llvm-svn: 164666
2012-09-26 06:36:36 +00:00
Anton Korobeynikov 37d73002d4 Emit dtors into proper section while compiling in vcpp-compatible mode.
Patch by Kai!

llvm-svn: 164476
2012-09-23 15:53:47 +00:00
Preston Gurd 055006475e Add support for macro parameters/arguments delimited by spaces,
to improve compatibility with GNU as.

Based on a patch by PaX Team.

Fixed assertion failures on non-Darwin and added additional test cases.

llvm-svn: 164248
2012-09-19 20:36:12 +00:00
Preston Gurd 242ed3158a Support default parameters/arguments for assembler macros.
This patch is based on the one by PaX Team.

Patch by Andy Zhang!

llvm-svn: 164246
2012-09-19 20:29:04 +00:00
Preston Gurd eb3ebf16ab Enhance unmatched '.endr' directive error message in assembler.
The directive can be matched with directives other than '.rept'

Patch by Andy Zhang!

llvm-svn: 164245
2012-09-19 20:23:43 +00:00
Jim Grosbach 0aac6ce759 Tidy up. Minor formatting.
llvm-svn: 164182
2012-09-18 23:05:18 +00:00
Jim Grosbach b12b71ae6e Tidy up. 80 columns.
llvm-svn: 164181
2012-09-18 23:05:12 +00:00
Roman Divacky 0be33598ce Avoid symbol name clash when filling TOC.
Patch by Adhemerval Zanella.

llvm-svn: 164141
2012-09-18 17:10:37 +00:00
Andrew Trick ba7b921fcb Replaced ReInitMCSubtargetInfo with InitMCProcessor.
Now where we used to call ReInitMCSubtargetInfo, we actually recompute
the same information as InitMCSubtargetInfo instead of only setting
the feature bits.

llvm-svn: 164105
2012-09-18 05:33:15 +00:00
Andrew Trick 6e6d597b1c TargetSchedModel API. Implement latency lookup, disabled.
llvm-svn: 164098
2012-09-18 04:03:34 +00:00
Andrew Trick ab722bdd50 TableGen subtarget emitter. Initialize MCSubtargetInfo with the new machine model.
llvm-svn: 164092
2012-09-18 03:18:56 +00:00
Andrew Trick 8e7f202e32 Revert r164061-r164067. Most of the new subtarget emitter.
I have to work out the Target/CodeGen header dependencies
before putting this back.

llvm-svn: 164072
2012-09-17 23:00:42 +00:00
Andrew Trick 692b87c18f InitMCProcessor
llvm-svn: 164066
2012-09-17 22:19:12 +00:00
Andrew Trick f403ee7937 TargetSchedModel API. Implement latency lookup, disabled.
llvm-svn: 164065
2012-09-17 22:19:08 +00:00
Andrew Trick 0923f8183b TableGen subtarget emitter. Initialize MCSubtargetInfo with the new machine model.
llvm-svn: 164061
2012-09-17 22:18:55 +00:00
Craig Topper 2e6644c260 Use LLVM_DELETED_FUNCTION in place of 'DO NOT IMPLEMENT' comments.
llvm-svn: 163970
2012-09-15 16:23:52 +00:00
Andrew Trick d2a19da1b8 TargetSchedModel interface. To be implemented...
llvm-svn: 163934
2012-09-14 20:26:46 +00:00
Andrew Trick ac36af470c Define MC data tables for the new scheduling machine model.
llvm-svn: 163933
2012-09-14 20:26:41 +00:00
Dmitri Gribenko 5485acd440 Fix Doxygen issues:
* wrap code blocks in \code ... \endcode;
* refer to parameter names in paragraphs correctly (\arg is not what most
  people want -- it starts a new paragraph);
* use \param instead of \arg to document parameters in order to be consistent
  with the rest of the codebase.

llvm-svn: 163902
2012-09-14 14:57:36 +00:00
Jim Grosbach b7b750d480 Assembler: Darwin variables defined via .set are no-dead-strip.
For gas compatibility.

rdar://12219394

llvm-svn: 163854
2012-09-13 23:11:31 +00:00
Jim Grosbach d96ef194d9 MachO: Correctly mark symbol-difference variables as N_ABS.
.set a, b - c + CONSTANT
d = b - c + CONSTANT

Both 'a' and 'd' should be marked as absolute symbols (N_ABS).

rdar://12219394

llvm-svn: 163853
2012-09-13 23:11:25 +00:00