Commit Graph

44 Commits

Author SHA1 Message Date
Anton Korobeynikov a8fd40b50a Address review comments: add 3 ARM calling conventions.
Dispatch C calling conv. to one of these conventions based on
target triple and subtarget features.

llvm-svn: 73530
2009-06-16 18:50:49 +00:00
Devang Patel d1c7d34924 Add new function attribute - noimplicitfloat
Update code generator to use this attribute and remove NoImplicitFloat target option.
Update llc to set this attribute when -no-implicit-float command line option is used.

llvm-svn: 72959
2009-06-05 21:57:13 +00:00
Dan Gohman a5b9645c4b Split the Add, Sub, and Mul instruction opcodes into separate
integer and floating-point opcodes, introducing
FAdd, FSub, and FMul.

For now, the AsmParser, BitcodeReader, and IRBuilder all preserve
backwards compatability, and the Core LLVM APIs preserve backwards
compatibility for IR producers. Most front-ends won't need to change
immediately.

This implements the first step of the plan outlined here:
http://nondot.org/sabre/LLVMNotes/IntegerOverflow.txt

llvm-svn: 72897
2009-06-04 22:49:04 +00:00
Devang Patel 72a4d2fec1 Add new function attribute - noredzone.
Update code generator to use this attribute and remove DisableRedZone target option.
Update llc to set this attribute when -disable-red-zone command line option is used.

llvm-svn: 72894
2009-06-04 22:05:33 +00:00
Nick Lewycky adbc284666 Give embedded metadata its own type instead of relying on EmptyStructTy.
llvm-svn: 72610
2009-05-30 05:06:04 +00:00
Chris Lattner 184f1be4a8 Add a new "available_externally" linkage type. This is intended
to support C99 inline, GNU extern inline, etc.  Related bugzilla's
include PR3517, PR3100, & PR2933.  Nothing uses this yet, but it
appears to work.

llvm-svn: 68940
2009-04-13 05:44:34 +00:00
Nick Lewycky 49f891958f Add support for embedded metadata to LLVM. This introduces two new types of
Constant, MDString and MDNode which can only be used by globals with a name
that starts with "llvm." or as arguments to a function with the same naming
restriction.

llvm-svn: 68420
2009-04-04 07:22:01 +00:00
Dale Johannesen 93eefa0043 Fix internal representation of fp80 to be the
same as a normal i80 {low64, high16} rather
than its own {high64, low16}.  A depressing number
of places know about this; I think I got them all.
Bitcode readers and writers convert back to the old
form to avoid breaking compatibility.

llvm-svn: 67562
2009-03-23 21:16:53 +00:00
Duncan Sands 4581bebf2a It makes no sense to have a ODR version of common
linkage, so remove it.

llvm-svn: 66690
2009-03-11 20:14:15 +00:00
Duncan Sands e2881053c9 Remove the one-definition-rule version of extern_weak
linkage: this linkage type only applies to declarations,
but ODR is only relevant to globals with definitions.

llvm-svn: 66650
2009-03-11 08:08:06 +00:00
Duncan Sands 12da8ce3d2 Introduce new linkage types linkonce_odr, weak_odr, common_odr
and extern_weak_odr.  These are the same as the non-odr versions,
except that they indicate that the global will only be overridden
by an *equivalent* global.  In C, a function with weak linkage can
be overridden by a function which behaves completely differently.
This means that IP passes have to skip weak functions, since any
deductions made from the function definition might be wrong, since
the definition could be replaced by something completely different
at link time.   This is not allowed in C++, thanks to the ODR
(One-Definition-Rule): if a function is replaced by another at
link-time, then the new function must be the same as the original
function.  If a language knows that a function or other global can
only be overridden by an equivalent global, it can give it the
weak_odr linkage type, and the optimizers will understand that it
is alright to make deductions based on the function body.  The
code generators on the other hand map weak and weak_odr linkage
to the same thing.

llvm-svn: 66339
2009-03-07 15:45:40 +00:00
Rafael Espindola 6de96a1b5d Add the private linkage.
llvm-svn: 62279
2009-01-15 20:18:42 +00:00
Misha Brukman fcef90909a Alphabetized #includes.
llvm-svn: 61595
2009-01-02 22:49:28 +00:00
Misha Brukman 1d9a93d291 Down with trailing whitespace!
llvm-svn: 61594
2009-01-02 22:46:48 +00:00
Chris Lattner 2346a9eb99 add a #include to hopefully get the x86-64-linux buildbot building.
llvm-svn: 61563
2009-01-02 07:18:46 +00:00
Chris Lattner ac161bff07 Reimplement the old and horrible bison parser for .ll files with a nice
and clean recursive descent parser.

This change has a couple of ramifications:
1. The parser code is about 400 lines shorter (in what we maintain, not
   including what is autogenerated).
2. The code should be significantly faster than the old code because we 
   don't have to work around bison's poor handling of datatypes with 
   ctors/dtors.  This also makes the code much more resistant to memory 
   leaks.
3. We now get caret diagnostics from the .ll parser, woo.
4. The actual diagnostics emited from the parser are completely different
   so a bunch of testcases had to be updated.
5. I now disallow "%ty = type opaque %ty = type i32".  There was no good
   reason to support this, it was just an accident of the old 
   implementation.  I have no reason to think that anyone is actually using
   this.
6. The syntax for sticking a global variable has changed to make it 
   unambiguous.  I don't think anyone is depending on this since only clang
   supports this and it is not solid yet, so I'm not worried about anything
   breaking.
7. This gets rid of the last use of bison, and along with it the .cvs files.
   I'll prune this from the makefiles as a subsequent commit.

There are a few minor cleanups that can be done after this commit (suggestions
welcome!) but this passes dejagnu testing and is ready for its time in the
limelight.

llvm-svn: 61558
2009-01-02 07:01:27 +00:00
Nick Lewycky 8d69f48833 Commit missed files from nocapture change.
llvm-svn: 61240
2008-12-19 09:38:31 +00:00
Bill Wendling a397baea88 Temporarily revert r61019, r61030, and r61040. These were breaking LLVM Release
builds.

llvm-svn: 61094
2008-12-16 19:06:48 +00:00
Nick Lewycky ddffe620e4 Introducing nocapture, a parameter attribute for pointers to indicate that the
callee will not introduce any new aliases of that pointer.

The attributes had all bits allocated already, so I decided to collapse
alignment. Alignment was previously stored as a 16-bit integer from bits 16 to
32 of the attribute, but it was required to be a power of 2. Now it's stored in
log2 encoded form in five bits from 16 to 21. That gives us 11 more bits of
space.

You may have already noticed that you only need four bits to encode a 16-bit
power of two, so why five bits? Because the AsmParser accepted 32-bit
alignments, even though we couldn't store them (they were silently discarded).
Now we can store them in memory, but not in the bitcode.

The bitcode format was already storing these as 64-bit VBR integers. So, the
bitcode format stays the same, keeping the alignment values stored as 16 bit
raw values. There's some hideous code in the reader and writer that deals with
this, waiting to be ripped out the moment we run out of bits again and have to
replace the parameter attributes table encoding.

llvm-svn: 61019
2008-12-15 01:34:58 +00:00
Bill Wendling ccb67a3d85 Implement stack protectors as function attributes: "ssp" and "sspreq".
llvm-svn: 59202
2008-11-13 01:02:14 +00:00
Devang Patel 9eb525d4f9 Implement function notes as function attributes.
llvm-svn: 56716
2008-09-26 23:51:19 +00:00
Dale Johannesen 0e32a2c935 Add "inreg" field to CallSDNode (doesn't increase
its size).  Adjust various lowering functions to
pass this info through from CallInst.  Use it to
implement sseregparm returns on X86.  Remove
X86_ssecall calling convention.

llvm-svn: 56677
2008-09-26 19:31:26 +00:00
Devang Patel 3771a1281f Parse and print opt_size note.
llvm-svn: 55740
2008-09-03 22:10:21 +00:00
Devang Patel c57b7a0fc8 Parse function notes.
llvm-svn: 55646
2008-09-02 20:52:40 +00:00
Dale Johannesen 332dd535e0 Add read/write support for X86's sseregparm.
llvm-svn: 54744
2008-08-13 18:40:23 +00:00
Dan Gohman fa1211f69b Enable first-class aggregates support.
Remove the GetResultInst instruction. It is still accepted in LLVM assembly
and bitcode, where it is now auto-upgraded to ExtractValueInst. Also, remove
support for return instructions with multiple values. These are auto-upgraded
to use InsertValueInst instructions.

The IRBuilder still accepts multiple-value returns, and auto-upgrades them
to InsertValueInst instructions.

llvm-svn: 53941
2008-07-23 00:34:11 +00:00
Dan Gohman 30499844ea Make structs and arrays first-class types, and add assembly
and bitcode support for the extractvalue and insertvalue
instructions and constant expressions.

Note that this does not yet include CodeGen support.

llvm-svn: 51468
2008-05-23 01:55:30 +00:00
Dan Gohman 298a1d6d5f Recognize the "default" keyword, which is documented in LangRef.html
and supported in the grammar, in the lexer.

llvm-svn: 51448
2008-05-22 22:30:09 +00:00
Dale Johannesen ce4396bc92 Add CommonLinkage; currently tentative definitions
are represented as "weak", but there are subtle differences
in some cases on Darwin, so we need both.  The intent
is that "common" will behave identically to "weak" unless
somebody changes their target to do something else.
No functional change as yet.

llvm-svn: 51118
2008-05-14 20:12:51 +00:00
Nate Begeman d21957002a Add two new instructions to the llvm IR, vicmp and vfcmp. see updated LangRef
for details.  CodeGen support coming in a follow up patch

llvm-svn: 50985
2008-05-12 19:01:56 +00:00
Nick Lewycky 4d43d3c72c Remove 'unwinds to' support from mainline. This patch undoes r47802 r47989
r48047 r48084 r48085 r48086 r48088 r48096 r48099 r48109 and r48123.

llvm-svn: 50265
2008-04-25 16:53:59 +00:00
Nick Lewycky fb2c1a999a Turn unwind_to into "unwinds to".
llvm-svn: 48123
2008-03-10 02:20:00 +00:00
Nick Lewycky 3cc9be0b59 Add an unwind_to field to basic blocks, making them Users instead of Values.
This is the first checkin for PR1269, the new EH infrastructure.

llvm-svn: 47802
2008-03-02 02:48:09 +00:00
Anton Korobeynikov 579f07135a Unbreak build with gcc 4.3: provide missed includes and silence most annoying warnings.
llvm-svn: 47367
2008-02-20 11:08:44 +00:00
Devang Patel 0dcd198bff Parse
%b = getresult {i32, i32} %a, i32 1

llvm-svn: 47349
2008-02-19 22:26:37 +00:00
Chris Lattner f3ebc3f3d2 Remove attribution from file headers, per discussion on llvmdev.
llvm-svn: 45418
2007-12-29 20:36:04 +00:00
Bill Wendling fcf2085731 Remove spurious warnings from GCC:
warning: suggest a space before ';' or explicit braces around empty  
body in 'for' statement

Patch by Mike Stump (modified slightly by yours truly).

llvm-svn: 45071
2007-12-16 09:16:12 +00:00
Christopher Lamb 54dd24c2a7 Implement address space attribute for LLVM pointer types. Address spaces are
regions of memory that have a target specific relationship, as described in the 
Embedded C Technical Report. 

This also implements the 2007-12-11-AddressSpaces test, 
which demonstrates how address space attributes can be used in LLVM IR.

In addition, this patch changes the bitcode signature for stores (in a backwards 
compatible manner), such that the pointer type, rather than the pointee type, is 
encoded. This permits type information in the pointer (e.g. address space) to be 
preserved for stores.

LangRef updates are forthcoming.

llvm-svn: 44858
2007-12-11 08:59:05 +00:00
Gordon Henriksen 71183b6739 Adding a collector name attribute to Function in the IR. These
methods are new to Function:

  bool hasCollector() const;
  const std::string &getCollector() const;
  void setCollector(const std::string &);
  void clearCollector();

The assembly representation is as such:

  define void @f() gc "shadow-stack" { ...

The implementation uses an on-the-side table to map Functions to 
collector names, such that there is no overhead. A StringPool is 
further used to unique collector names, which are extremely
likely to be unique per process.

llvm-svn: 44769
2007-12-10 03:18:06 +00:00
Chris Lattner d58954b040 add #include
llvm-svn: 44710
2007-12-08 19:03:30 +00:00
Duncan Sands a89a113a20 Rename the 'const' parameter attribute to 'readnone',
and the 'pure' parameter attribute to 'readonly'.
Names suggested by DannyB.

llvm-svn: 44273
2007-11-22 20:23:04 +00:00
Chris Lattner b01e500f16 autoupgrade files that use callfoo as call foo.
llvm-svn: 44218
2007-11-18 18:43:24 +00:00
Chris Lattner c3cc30cdb8 Bugfix, this fixes CodeGen/X86/ldzero.ll and CodeGen/X86/2007-10-16-fp80_select.ll
llvm-svn: 44215
2007-11-18 18:25:18 +00:00
Chris Lattner 660c6b9a92 Replace the original flex lexer with a hand writen one. This
drops a dependency on flex and lets us make future progress more 
easily.  Yay for 2 fewer .cvs files to make silly conflicts with.

llvm-svn: 44213
2007-11-18 08:46:26 +00:00