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266c7bbbbc
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27946 Commits

Author SHA1 Message Date
Chris Lattner
266c7bbbbc 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68940 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-13 05:44:34 +00:00
Chris Lattner
2c71b8f64f eliminate unneeded parens. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68939 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-13 05:38:23 +00:00
Nick Lewycky
93f70fc291 Link against libffi if available, fall back to "no external calls from 
interpreter mode" when it's not.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68937 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-13 04:26:06 +00:00
Chris Lattner
b7253150ab fix PR3965:SIGINT handler not restored after calling ParseAST(), 
patch by Alexei Svitkine!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68929 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-12 23:33:13 +00:00
Rafael Espindola
b215776fa1 In X86DAGToDAGISel::MatchWrapper, if base or index are set, avoid matching 
only if symbolic addresses are RIP relatives.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68924 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-12 23:00:38 +00:00
Rafael Espindola
49a168daae refactor some code into X86DAGToDAGISel::MatchWrapper 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68915 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-12 21:55:03 +00:00
Chris Lattner
5db4cdfc56 "There was a typo in my previous patch which leads to miscompilation of 
strncat :(

strncat(foo, "bar", 99)
would be optimized to
memcpy(foo+strlen(foo), "bar", 100, 1)
instead of
memcpy(foo+strlen(foo), "bar", 4, 1)"

Patch by Benjamin Kramer!



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68905 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-12 18:22:33 +00:00
Chris Lattner
8d57b778b5 fix a cross-block fastisel crash handling overflow intrinsics. 
See comment for details.  This fixes rdar://6772169


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68890 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-12 07:51:14 +00:00
Chris Lattner
36e3946ac2 make UpdateValueMap handle the possiblity that we could be 
copying into the right register, avoiding a copy.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68889 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-12 07:46:30 +00:00
Chris Lattner
c5040ab606 optimize FastISel::UpdateValueMap to avoid duplicate map lookups, 
and make it return the assigned register.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68888 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-12 07:45:01 +00:00
Chris Lattner
a9a42259ed simplify code by using IntrinsicInst. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68887 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-12 07:36:01 +00:00
Chris Lattner
0461c0a8f5 Add new TargetInstrDesc::hasImplicitUseOfPhysReg and 
hasImplicitDefOfPhysReg methods.  Use them to remove a 
look in X86 fast isel.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68886 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-12 07:26:51 +00:00
Chris Lattner
f5b6bc7f0e add some optimizations for strncpy/strncat and factor some 
code.  Patch by Benjamin Kramer!



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68885 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-12 05:06:39 +00:00
Dan Gohman
c6fa3ff0bd Revert r68847. It breaks the build on non-Darwin targets, with this message 
from the assembler:

Error: unknown pseudo-op: `.debug_inlined'


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68863 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-11 15:57:04 +00:00
Devang Patel
2057532679 Keep track of inlined functions and their locations. This information is collected when nested llvm.dbg.func.start intrinsics are seen. (Right now, inliner removes nested llvm.dbg.func.start intrinisics during inlining.) 
Create debug_inlined dwarf section using these information. This info is used by gdb, at least on Darwin, to enable better experience debugging inlined functions. See DwarfWriter.cpp for more information on structure of debug_inlined section.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68847 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-11 00:16:47 +00:00
Devang Patel
03f0a2fba0 DebugLabelFolder ruthlessly deletes redundant labels. However, sometimes the redundant labels is referenced by debug info somewhere else. This patch provies a way so that dwarf writer can mark labels as used. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68813 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-10 18:58:59 +00:00
Bob Wilson
ec15bbfd2f Clean up a bunch of whitespace issues and fix a comment typo. 
No functional changes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68808 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-10 18:48:47 +00:00
Chris Lattner
296185c264 fix two problems with machine sinking: 
1. Sinking would crash when the first instruction of a block was
   sunk due to iterator problems.
2. Instructions could be sunk to their current block, causing an
   infinite loop.

This fixes PR3968


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68787 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-10 16:38:36 +00:00
Dan Gohman
0355862f71 Now that register classes have names, include the name in debug output. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68786 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-10 15:59:38 +00:00
Sanjiv Gupta
a3613be963 Added code to handle spilling and reloading of FSRs. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68783 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-10 15:10:14 +00:00
Rafael Espindola
dbcfb3080a Don't fold a load if the other operand is a TLS address. 
With this we generate

movl    %gs:0, %eax
leal    i@NTPOFF(%eax), %eax

instead of

movl    $i@NTPOFF, %eax
addl    %gs:0, %eax



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68778 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-10 10:09:34 +00:00
Chris Lattner
3584a47588 Add a new Type::getPointerTo method, which is shorthand for 
llvm::PointerType::get().  Patch by Anders Johnsen!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68772 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-10 06:42:02 +00:00
Chris Lattner
c2406f2341 a few fixes to "addrspace(256) is reference offset of GS segment register". 
It turns out that there are still several problems with this, will file a bugzilla.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68749 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-10 00:16:23 +00:00
Bill Wendling
7d16e85bfc Pass in the std::string parameter instead of returning it by value. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68747 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-10 00:12:49 +00:00
Bill Wendling
a6f02fbb75 Constify getter methods. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68745 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-10 00:00:25 +00:00
Dan Gohman
fc1665793e Remove the obsolete SelectionDAG::getNodeValueTypes and simplify 
code that uses it by using SelectionDAG::getVTList instead.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68744 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-09 23:54:40 +00:00
Bill Wendling
f34be827ac StringMap<DIE*>::iterator::first() returns a pointer to the first character of 
the key. This will cause it to create a new std::string, which isn't
wanted. Instead, pass back the "const char*". Modify the EmitString() method to
take a "const char*".


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68741 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-09 23:51:31 +00:00
Devang Patel
923838533a Silence unused variable warning. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68735 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-09 23:45:17 +00:00
Chris Lattner
c30aa7b3de ignore register zero in isRegTiedToUseOperand, following the example of 
isRegTiedToDefOperand.  Thanks to Bob for pointing this out!



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68734 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-09 23:33:34 +00:00
Owen Anderson
3ca15c989c Give register alias checking the hash table treatment too. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68730 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-09 22:19:30 +00:00
Bill Wendling
972bbac789 Use a StringMap instead of std::map for storing std::string->DIE* maps. This 
gives a micro speedup in the Dwarf writer.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68728 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-09 21:49:15 +00:00
Devang Patel
b396992f68 llvm.dbg.func_start also defines beginning of function scope. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68727 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-09 21:42:11 +00:00
Bob Wilson
d9df501704 Fix pr3954. The register scavenger asserts for inline assembly with 
register destinations that are tied to source operands.  The
TargetInstrDescr::findTiedToSrcOperand method silently fails for inline
assembly.  The existing MachineInstr::isRegReDefinedByTwoAddr was very
close to doing what is needed, so this revision makes a few changes to
that method and also renames it to isRegTiedToUseOperand (for consistency
with the very similar isRegTiedToDefOperand and because it handles both
two-address instructions and inline assembly with tied registers).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68714 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-09 17:16:43 +00:00
Sanjiv Gupta
37831d0a12 The way we are trying to figure out banksel immediate operand may yield different results for different type of insns. This will eventually need to be changed but currently let us prevent the crash in cases of incorrect detection of banksel operand. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68713 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-09 17:06:24 +00:00
Chris Lattner
0c8382ce9a reg0 references are not real registers. This fixes a crash on the 
attached testcase.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68712 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-09 16:50:43 +00:00
Sanjiv Gupta
e206b1d142 Arguments to indirect calls were being passed incorrectly. They are not fixed to start after return value. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68705 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-09 10:29:32 +00:00
Chris Lattner
a1cd83a258 Fix code size computation on x86-64, patch by Zoltan Varga! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68690 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-09 06:10:51 +00:00
Sanjiv Gupta
6e2a46a0b4 r68576 unconverd a bug in PIC16 port (Thanks to Dan Gohman) where we were custom lowering an ADD to ADDC. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68671 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-09 04:03:43 +00:00
Dan Gohman
57fc82d409 Generalize ExtendUsesToFormExtLoad to be usable for ANY_EXTEND, 
in addition to ZERO_EXTEND and SIGN_EXTEND. Fix a bug in the
way it checked for live-out values, and simplify the way it
find users by using SDNode::use_iterator's (relatively) new
features. Also, make it slightly more permissive on targets
with free truncates.

In SelectionDAGBuild, avoid creating ANY_EXTEND nodes that are
larger than necessary. If the target's SwitchAmountTy has
enough bits, use it. This exposes the truncate to optimization
early, enabling more optimizations.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68670 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-09 03:51:29 +00:00
Owen Anderson
7d770be047 Convert TargetRegisterInfo's super-register checking to use a pre-computed hash table just like subregister checking does. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68669 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-09 03:50:16 +00:00
Dan Gohman
8e5c0da848 Don't copy the operand of a SwitchInst into virtual registers as 
eagerly. This helps avoid CopyToReg nodes in some cases where they
aren't needed, and also helps subsequent optimizer heuristics
in cases where the extra nodes would cause the node to appear
to have multiple results. This doesn't have a significant impact
currently; it'll help an upcoming change.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68667 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-09 02:33:36 +00:00
Dan Gohman
349ba4951f Fix grammaros in comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68666 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-09 02:06:09 +00:00
Daniel Dunbar
6ddf2c1930 Add sys::Path::makeAbsolute(). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68663 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-09 00:33:08 +00:00
Devang Patel
75b2738d73 If subprogram type is not tagged as DW_TAG_subroutine_type then use it directly as a return value type. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68647 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-08 22:18:45 +00:00
Rafael Espindola
094fad37b9 Re-apply 68552. 
Tested by bootstrapping llvm-gcc and using that to build llvm.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68645 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-08 21:14:34 +00:00
Bob Wilson
2c7dab1864 Fix PR3795: Apply Dan's suggested fix for 
ARMTargetLowering::isLegalAddressingMode.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68619 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-08 17:55:28 +00:00
Duncan Sands
3d0355b825 Soft float support for FREM. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68614 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-08 16:20:57 +00:00
Duncan Sands
7beb1ec298 Soft float support for undef. Reported by Xerxes Rånby. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68607 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-08 13:33:37 +00:00
Rafael Espindola
8ef2b89131 Avoid a hard coded constant. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68603 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-08 08:09:33 +00:00
Sanjiv Gupta
c1fa70c35a Emit .line debug directives for stoppoints. The debug location is retrieved by the MachineInstr itself, rather than by custom handling the DBG_STOPPOINT nodes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68602 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-08 06:24:04 +00:00