Commit Graph

1889 Commits

Author SHA1 Message Date
Pedro Artigas
9e7924d206 clear new map and initialize new variable
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175578 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-20 00:10:29 +00:00
Jack Carter
77afbdce53 ELF symbol table field st_other support,
excluding visibility bits.

Generic STO handling at the Target level.

The st_other field of the ELF symbol table is one
byte in size. The first 2 bytes are used for generic
visibility and are currently handled by llvm.

The other six bits are processor specific and need 
to be set at the target level.

A couple of notes:

The new static methods for accessing and setting the "other"
flags in include/llvm/MC/MCELF.h match the style guide
and not the other methods in the file. I don't like the
inconsistency, but feel I should follow the prescribed 
lowerUpper() convention.

STO_ value definitions are not specified in gnu land as 
consistently as the STT_ and STB_ fields. Probably because
the latter were defined in a standards doc and the former
defined partially in code. I have stuck with the full byte
definition of the flags.

Contributer: Zoran Jovanovic




git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175561 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-19 21:57:35 +00:00
Benjamin Kramer
8a89cf233d MCParser: Reject .balign with non-pow2 alignments.
GNU as rejects them and there are configure scripts in the wild that check if
the assembler rejects ".align 3" to determine whether the alignment is in bytes
or powers of two.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175360 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-16 15:00:16 +00:00
Joerg Sonnenberger
42edeb1ba8 Derive ELF section type from the name in some cases where GNU as does
so.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175327 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-16 00:32:53 +00:00
Matt Beaumont-Gay
f787085934 Suppress a GCC -Wunused-variable warning in -Asserts builds
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175319 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-15 23:12:33 +00:00
Chad Rosier
b54562b96d c[ms-inline asm] It's possible to have a SizeDirective rewrite and an
Input/Output rewrite to the same location.  Make sure the SizeDirective rewrite
is performed first.  This also ensure the sort algorithm is stable.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175317 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-15 22:54:16 +00:00
Derek Schuff
67144e37ba If bundle alignment is enabled, do not add data to a fragment with instructions
With bundle alignment, instructions all get their own MCFragments
(unless they are in a bundle-locked group). For instructions with
fixups, this is an MCDataFragment. Emitting actual data (e.g. for
.long) attempts to re-use MCDataFragments, which we don't want int
this case since it leads to fragments which exceed the bundle size.
So, don't reuse them in this case.
Also adds a test and fixes some formatting.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175316 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-15 22:50:52 +00:00
Benjamin Kramer
7523437246 AsmParser: Reformat the MS asm parser to reduce nesting.
While there postpone register name printing after uniquing.
No intended functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175292 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-15 20:37:21 +00:00
Benjamin Kramer
74b3c8da48 Make helpers static. Add missing include so LLVMInitializeObjCARCOpts gets C linkage.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175264 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-15 12:30:38 +00:00
Rafael Espindola
e186d7191c Revert r15266. This fixes llvm.org/pr15266.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175173 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-14 16:23:08 +00:00
Chad Rosier
19aa3e37dc [ms-inline asm] Add a comment about the determinism of the rewrite sort.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175082 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-13 21:27:17 +00:00
Chad Rosier
abde6755f9 [ms-inline-asm] Use an array_pod_sort, rather than a std:sort.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175063 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-13 18:38:58 +00:00
Chad Rosier
b195398192 [ms-inline-asm] Make sure the AsmRewrite list is sorted in lexical order.
rdar://13202662


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175021 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-13 01:03:13 +00:00
Chad Rosier
469b144f1c [ms-inline-asm] Implement align directive (which is roughly equivalent to .align).
Also, allow _EMIT and __EMIT for the emit directive.  We already do the same
for TYPE, SIZE, and LENGTH.
rdar://13200215


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175008 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-12 21:33:51 +00:00
Jack Carter
dc08bfbd56 This patch just fixes up various llvm formatting
violations such as tabs, blanks at eol and long 
lines.


 


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175007 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-12 21:29:39 +00:00
Guy Benyei
87d0b9ed14 Add static cast to unsigned char whenever a character classification function is called with a signed char argument, in order to avoid assertions in Windows Debug configuration.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175006 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-12 21:21:59 +00:00
Chad Rosier
e1d6403128 [ms-inline asm] Pass the length of the IDVal, so we can do a proper AsmRewrite.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174999 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-12 19:42:32 +00:00
Chad Rosier
ab9d251e85 [ms-inline asm] Accept the emit directive as either _emit or __emit.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174998 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-12 19:31:23 +00:00
Chad Rosier
8915e27704 [ms-inline asm] Add support for lexing binary integers with a [bB] suffix.
This is complicated by backward labels (e.g., 0b can be both a backward label
and a binary zero).  The current implementation assumes [0-9]b is always a
label and thus it's possible for 0b and 1b to not be interpreted correctly for
ms-style inline assembly.  However, this is relatively simple to fix in the
inline assembly (i.e., drop the [bB]).

This patch also limits backward labels to [0-9]b, so that only 0b and 1b are
ambiguous.
Part of rdar://12470373


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174983 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-12 18:29:02 +00:00
Krzysztof Parzyszek
c5ef7eee3c Allow optionally generating pubnames section in DWARF info. Introduce
option "generate-dwarf-pubnames" to control it, set to "false" by default.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174981 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-12 18:00:14 +00:00
Chad Rosier
53e5bb70db Update error message due to previous commit, r174926.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174927 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-12 01:12:24 +00:00
Chad Rosier
d556fd1290 [ms-inline asm] Add support for lexing hexidecimal integers with a [hH] suffix.
Part of rdar://12470373

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174926 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-12 01:00:01 +00:00
David Blaikie
f12b379448 Fix unnecessary removal of const through cast machinery
I have some uncommitted changes to the cast code that catch this sort of thing
at compile-time but I still need to do some other cleanup before I can enable
it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174853 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-11 01:16:51 +00:00
Eric Christopher
e0501e866c Formatting.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174664 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-07 21:19:56 +00:00
Manman Ren
43213cf1ac Dwarf: support for LTO where a single object file can have multiple line tables
We generate one line table for each compilation unit in the object file.
Reviewed by Eric and Kevin.

rdar://problem/13067005


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174445 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-05 21:52:47 +00:00
Derek Schuff
f918d7fd73 [MC] Bundle alignment: Invalidate relaxed fragments
Currently, when a fragment is relaxed, its size is modified, but its
offset is not (it gets laid out as a side effect of checking whether
it needs relaxation), then all subsequent fragments are invalidated
because their offsets need to change. When bundling is enabled,
relaxed fragments need to get laid out again, because the increase in
size may push it over a bundle boundary. So instead of only
invalidating subsequent fragments, also invalidate the fragment that
gets relaxed, which causes it to get laid out again.

This patch also fixes some trailing whitespace and fixes the
bundling-related debug output of MCFragments.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174401 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-05 17:55:27 +00:00
Logan Chien
b0c899666a Link .ARM.exidx with corresponding text section.
The sh_link in the ELF section header of .ARM.exidx should
be filled with the section index of the corresponding text
section.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174372 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-05 14:18:59 +00:00
Chandler Carruth
3529d1aa8d Fix another typo in the classof definitions that doesn't (currently)
have any effect. Spotted by Eli in review, thanks!!!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174121 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-01 00:04:33 +00:00
Chandler Carruth
5da3665cc5 Give the MCStreamer class hierarchy LLVM RTTI facilities for use with
isa<> and dyn_cast<>. In several places, code is already hacking around
the absence of this, and there seem to be several interfaces that might
be lifted and/or devirtualized using this.

This change was based on a discussion with Jim Grosbach about how best
to handle testing for specific MCStreamer subclasses. He said that this
was the correct end state, and everything else was too hacky so
I decided to just make it so.

No functionality should be changed here, this is just threading the kind
through all the constructors and setting up the classof overloads.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174113 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-31 23:29:57 +00:00
Derek Schuff
b11917c1aa [MC] bundle alignment: prevent padding instructions from crossing bundle boundaries
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174067 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-31 17:00:03 +00:00
Tim Northover
72062f5744 Add AArch64 as an experimental target.
This patch adds support for AArch64 (ARM's 64-bit architecture) to
LLVM in the "experimental" category. Currently, it won't be built
unless requested explicitly.

This initial commit should have support for:
    + Assembly of all scalar (i.e. non-NEON, non-Crypto) instructions
      (except the late addition CRC instructions).
    + CodeGen features required for C++03 and C99.
    + Compilation for the "small" memory model: code+static data <
      4GB.
    + Absolute and position-independent code.
    + GNU-style (i.e. "__thread") TLS.
    + Debugging information.

The principal omission, currently, is performance tuning.

This patch excludes the NEON support also reviewed due to an outbreak of
batshit insanity in our legal department. That will be committed soon bringing
the changes to precisely what has been approved.

Further reviews would be gratefully received.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174054 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-31 12:12:40 +00:00
Jack Carter
9a7bf438b5 This patch reworks how llvm targets set
and update ELF header e_flags.

Currently gathering information such as symbol, 
section and data is done by collecting it in an 
MCAssembler object. From MCAssembler and MCAsmLayout 
objects ELFObjectWriter::WriteObject() forms and 
streams out the ELF object file.

This patch just adds a few members to the MCAssember 
class to store and access the e_flag settings. It 
allows for runtime additions to the e_flag by 
assembler directives. The standalone assembler can 
get to MCAssembler from getParser().getStreamer().getAssembler().

This patch is the generic infrastructure and will be
followed by patches for ARM and Mips for their target 
specific use.

Contributer: Jack Carter
 


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@173882 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-30 02:09:52 +00:00
Dmitri Gribenko
76122f9c13 Remove unused variable (unused since r173839)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@173847 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-29 23:27:45 +00:00
Michael J. Spencer
0933134a30 [MC][COFF] Delay handling symbol aliases when writing
Fixes PR14447 and PR9034. Patch by Nico Rieck!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@173839 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-29 22:10:07 +00:00
Eli Bendersky
e752feee52 Clean up assignment of CalleeSaveStackSlotSize: get rid of the default and explicitly set this in every target that needs to change it from the default.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@173270 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-23 16:22:04 +00:00
Kevin Enderby
221514efe9 Add a warning when there is a macro defintion that has named parameters but
the body does not use them and it appears the body has positional parameters.

This can cause unexpected results as in the added test case.  As the darwin
version of gas(1) which only supported positional parameters, happened to
ignore the named parameters.  Now that we want to support both styles of
macros we issue a warning in this specific case.

rdar://12861644


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@173199 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-22 21:44:53 +00:00
Kevin Enderby
5de048ec30 Have the integrated assembler give an error if $1 is used as an identifier in
an expression.  Currently this bug causes the line to be ignored in a
release build and an assert in a debug build.

rdar://13062484


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@173195 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-22 21:09:20 +00:00
Eli Bendersky
9dd2a3b1f2 Initial patch for x32 ABI support.
Add the x32 environment kind to the triple, and separate the concept of
pointer size and callee save stack slot size, since they're not equal
on x32.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@173175 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-22 18:02:49 +00:00
Daniel Dunbar
849209686f [MC/Mach-O] Load commands are supposed to 8-byte aligned on 64-bit.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@173120 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-22 03:42:49 +00:00
Jack Carter
c91cbb9b0c This is a resubmittal. For some reason it broke the bots yesterday
but I cannot reproduce the problem and have scrubed my sources and
even tested with llvm-lit -v --vg.
Support for Mips register information sections.

Mips ELF object files have a section that is dedicated
to register use info. Some of this information such as
the assumed Global Pointer value is used by the linker
in relocation resolution.

The register info file is .reginfo in o32 and .MIPS.options
in 64 and n32 abi files.

This patch contains the changes needed to create the sections,
but leaves the actual register accounting for a future patch.


Contributer: Jack Carter
 


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172847 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-18 21:20:38 +00:00
Daniel Dunbar
6d49b680be [MC/Mach-O] Implement integrated assembler support for linker options.
- Also, fixup syntax errors in LangRef and missing newline in the MCAsmStreamer.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172837 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-18 19:37:00 +00:00
Daniel Dunbar
a94c339423 [MC/Mach-O] Add support for linker options in Mach-O files.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172779 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-18 01:26:07 +00:00
Daniel Dunbar
cddd236e8a [MC/Mach-O] Add AsmParser support for .linker_option directive.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172778 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-18 01:25:48 +00:00
Daniel Dunbar
bfdcc70d34 [MC] Expose ParseEscapedString to target AsmParser implementations.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172777 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-18 01:25:33 +00:00
Daniel Dunbar
9b6a44712a [MC] Fix 80-col violas.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172776 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-18 01:25:25 +00:00
Chad Rosier
505bca3617 [ms-inline asm] Add support for the 'SIZE' and 'LENGTH' operators.
Part of rdar://12576868


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172743 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-17 19:21:48 +00:00
Eli Bendersky
ed5df01198 Some small (and mostly cosmetic) fixes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172640 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-16 19:32:36 +00:00
Eli Bendersky
f9f40bd158 Now that GenericAsmParser was folded into AsmParser, some methods and types can
return into the safe harbor of AsmParser's private areas.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172637 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-16 18:56:50 +00:00
Kevin Enderby
75c9b9384f We want the dwarf AT_producer for assembly source files to match clang's
AT_producer.  Which includes clang's version information so we can tell
which version of the compiler was used.

This is the first of two steps to allow us to do that.  This is the llvm-mc
change to provide a method to set the AT_producer string.  The second step,
coming soon to a clang near you, will have the clang driver pass the value
of getClangFullVersion() via an flag when invoking the integrated assembler
on assembly source files.

rdar://12955296


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172630 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-16 17:46:23 +00:00
Eli Bendersky
171192f149 Use the ExtensionDirectiveHandler type in other places where it makes sense.
Since we already have this type it's a shame to keep dragging a pair of object
and method around explicitly.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172584 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-16 00:50:52 +00:00
Eric Christopher
72f7bfbf0e Split address information for DWARF5 split dwarf proposal. This involves
using the DW_FORM_GNU_addr_index and a separate .debug_addr section which
stays in the executable and is fully linked.

Sneak in two other small changes:

a) Print out the debug_str_offsets.dwo section.
b) Change form we're expecting the entries in the debug_str_offsets.dwo
   section to take from ULEB128 to U32.

Add tests for all of this in the fission-cu.ll test.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172578 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-15 23:56:56 +00:00
Eli Bendersky
9ccb76998f Optimize the memory usage of MC bundling, by creating a new type of fragment
into which we can emit single instructions without fixups (which is most
instructions). This is an optimization required because MCDataFragment
is prety large (240 bytes on x64), with no change in functionality.

For large programs, this reduces memory usage overhead required for bundling
by 40%.

To make the code as palatable as possible, the MCEncodedFragment interface was
further fragmented (no pun intended) and MCEncodedFragmentWithFixups is used
as the interface to work against when the user expects fixups. MCDataFragment
and MCRelaxableFragment implement this interface, while the new
MCCompactEncodedInstFragment implements MCEncodeFragment.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172572 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-15 23:22:09 +00:00
Chad Rosier
1c99a7f489 [ms-inline asm] Address the FIXME in AsmParser.cpp.
// FIXME: Constraints are hard coded to 'm', but we need an 'r'
// constraint for addressof.  This needs to be cleaned up!

Test cases are already in place.  Specifically,
clang/test/CodeGen/ms-inline-asm.c t15(), t16(), and t24().

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172569 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-15 23:07:53 +00:00
Eli Bendersky
6ee1308930 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.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172568 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-15 22:59:42 +00:00
Eli Bendersky
bbe64fba4a 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.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172491 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-14 23:43:18 +00:00
Eli Bendersky
c0c67b03b0 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.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172490 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-14 23:22:36 +00:00
Eli Bendersky
318cad3323 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


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172451 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-14 19:15:01 +00:00
Eli Bendersky
030f63a397 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.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172450 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-14 19:04:57 +00:00
Eli Bendersky
9bac6b29b8 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.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172449 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-14 19:00:26 +00:00
Eli Bendersky
733c336327 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).



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172440 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-14 18:08:41 +00:00
Dmitri Gribenko
96f498bd9f Remove redundant 'llvm::' qualifications
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172358 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-13 16:01:15 +00:00
Eli Bendersky
b2f0b595a3 Stop hiding the interface-exposed EatToEndOfStatement (see r172276).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172277 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-12 00:23:24 +00:00
Eli Bendersky
bf706b3f99 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.




git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172276 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-12 00:05:00 +00:00
Eli Bendersky
9b1bb05386 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.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172268 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-11 22:55:28 +00:00
NAKAMURA Takumi
b956ec176a 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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172166 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-11 02:50:09 +00:00
NAKAMURA Takumi
51873db5af llvm/lib/MC/MCParser/AsmParser.cpp: [ms-inline-asm] Fix a couple of undefined behaviors. Operand->needAddressOf() is not initialized at !Operand->isReg().
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172153 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-11 00:37:35 +00:00
Eli Bendersky
7eef9c1091 Rename enumerations s/VK/DK/ to conform to naming convention
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172149 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-10 23:40:56 +00:00
Eli Bendersky
63e6f48e13 fix comments a bit
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172146 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-10 23:32:57 +00:00
Eli Bendersky
5d0f061779 Remove a couple of if-else chains in parsing directives, replacing them by a
switch. Committed with Jim's and Chris's approval.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172136 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-10 22:44:57 +00:00
Chad Rosier
c1ec207b61 [ms-inline asm] Add support for calling functions from inline assembly.
Part of rdar://12991541

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172121 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-10 22:10:27 +00:00
Adhemerval Zanella
a1db5de9e7 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.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171979 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-09 17:08:15 +00:00
Eric Christopher
1ced208be9 Last in the series of removing unnecessary '0' arguments for
address space. Reordered the EmitULEB128IntValue arguments to
make this easier.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171949 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-09 03:52:05 +00:00
Eric Christopher
68ca56285f These functions have default arguments of 0 for the last arg. Use
them.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171933 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-09 01:57:54 +00:00
Eric Christopher
ca1dd05c3c These functions have default arguments of 0 for the last arg. Use
them and add one where it seemed obvious that we wanted one.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171932 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-09 01:35:34 +00:00
Eli Bendersky
0fdcef6030 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


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171903 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-08 22:05:10 +00:00
Eli Bendersky
6f6204f235 Rename statistic for instruction fragments -> relaxable
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171872 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-08 17:41:59 +00:00
Eli Bendersky
251040bc18 Renamed MCInstFragment to MCRelaxableFragment and added some comments.
No change in functionality.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171822 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-08 00:22:56 +00:00
Eli Bendersky
6c1d4972cf 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


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171797 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-07 21:51:08 +00:00
Chad Rosier
deb1bab608 [ms-inline asm] Make sure the NullStreamParser doesn't try to emit labels when
parsing MS-style inline assembly.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171784 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-07 20:34:12 +00:00
Jordan Rose
3ebe59c892 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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171765 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-07 19:00:49 +00:00
Adhemerval Zanella
7b449889e7 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.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171506 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-04 19:08:13 +00:00
Pedro Artigas
b9d1005e96 small fixes to enable the reuse of the pass manager across multiple modules
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171475 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-04 18:04:42 +00:00
Eric Christopher
60230ef987 Add section information for the DWARF5 split debug proposal
string offset section.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171474 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-04 17:59:22 +00:00
Michael J. Spencer
f94cfb65f5 [MC][COFF] Switch the COFF streamer over to using the MCObjectStreamer version of EmitInstruction.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171437 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-03 01:09:22 +00:00
Eli Bendersky
bc87361d25 Fix an unitialized member variable that may have caused sporadic failures
for code that wasn't even in bundling mode.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170793 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-20 22:51:52 +00:00
Eli Bendersky
4766ef41b3 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170718 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-20 19:05:53 +00:00
Roman Divacky
6af228a92a Remove MCTargetAsmLexer and its derived classes now that edis,
its only user, is gone.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170699 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-20 14:43:30 +00:00
Roman Divacky
759e3fa641 Remove edis - the enhanced disassembler. Fixes PR14654.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170578 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-19 19:55:47 +00:00
Kevin Enderby
5469f605fe 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


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170477 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-18 23:47:28 +00:00
Eric Christopher
d57a598773 Formatting.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170394 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-18 00:42:26 +00:00
Eric Christopher
6c583141bf Add support for passing -main-file-name all the way through to
the assembler.

Part of PR14624

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170390 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-18 00:31:01 +00:00
Eric Christopher
2318ba16ef Cleanup formatting and whitespace.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170389 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-18 00:30:54 +00:00
Reed Kotler
082b7e6d36 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.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170383 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-17 23:41:45 +00:00
Eli Bendersky
14b8f79c26 fix indentation
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170381 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-17 22:50:56 +00:00
Chandler Carruth
6c31d31357 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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170371 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-17 21:32:42 +00:00
Tim Northover
1c2b2f9c56 Teach MachO which sections contain code
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170349 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-17 17:59:32 +00:00
NAKAMURA Takumi
ac3fab4765 MCPureStreamer.cpp: Try to fix build, pruning EmitDebugLabel().
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170280 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-16 04:23:20 +00:00
Reed Kotler
2c3a4641a7 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 



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170279 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-16 04:00:45 +00:00
Pedro Artigas
99cbdde619 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
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170227 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-14 18:52:11 +00:00
Bill Schmidt
b453e16855 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170209 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-14 17:02:38 +00:00