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Author SHA1 Message Date
Eric Christopher
0891d99b87 Fix unused param warning. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128005 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-21 18:06:32 +00:00
Eric Christopher
28ed90b95d Grammar-o. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128004 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-21 18:06:21 +00:00
Jay Foad
b963e2320f Fix typos in assert messages. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128002 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-21 16:38:22 +00:00
Anders Carlsson
b12caf31f4 More cleanups to the OptimizeEmptyGlobalCXXDtors GlobalOpt function. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127997 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-21 14:54:40 +00:00
Bill Wendling
3ce1b7d514 A WIP commit of the InstAlias printing cleanup. This code will soon replace the 
code below it. Even though it looks very similar, it will match more precisely
and geneate better functions in the long run.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127991 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-21 08:59:17 +00:00
Bill Wendling
4962e61431 Add the IAPrinter class. 
This is a helper class that will make it easier to say which InstAliases can be
printed and which cannot (because of ambiguity).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127990 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-21 08:40:31 +00:00
Bill Wendling
2cf6fc6857 * Add classes that support the "feature" information. 
* Move the code that emits the reg in reg class matching into its own function.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127988 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-21 08:31:53 +00:00
Bill Wendling
a5c177e70a We need to pass the TargetMachine object to the InstPrinter if we are printing 
the alias of an InstAlias instead of the thing being aliased. Because we need to
know the features that are valid for an InstAlias.

This is part of a work-in-progress.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127986 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-21 04:13:46 +00:00
Anders Carlsson
262a862787 As suggested by Nick Lewycky, ignore debugging intrinsics when trying to decide whether a destructor is empty or not. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127985 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-21 02:42:27 +00:00
Nick Lewycky
35ee1c921c Fix comments 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127984 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-21 02:26:01 +00:00
Eli Friedman
ddfa02ba24 This README entry was fixed recently. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127982 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-21 01:33:03 +00:00
Evan Cheng
485fafc840 Re-apply r127953 with fixes: eliminate empty return block if it has no predecessors; update dominator tree if cfg is modified. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127981 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-21 01:19:09 +00:00
Anders Carlsson
4f735ca185 Don't try to eliminate invokes to __cxa_atexit. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127976 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-20 20:21:33 +00:00
Anders Carlsson
372ec6aa91 Don't segfault on mutual recursion, as pointed out by Frits. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127975 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-20 20:16:43 +00:00
Anders Carlsson
1f7c7ba380 Address comments from Frits van Bommel. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127974 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-20 19:51:13 +00:00
Jakob Stoklund Olesen
2dc455a366 Process all dead defs after rematerializing during splitting. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127973 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-20 19:46:23 +00:00
Rafael Espindola
7c18fa87a4 Write the section table and the section data in the same order that 
gun as does. This makes it a lot easier to compare the output of both
as the addresses are now a lot closer.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127972 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-20 18:44:20 +00:00
Anders Carlsson
a201c4c2e6 Add an optimization to GlobalOpt that eliminates calls to __cxa_atexit, if the function passed is empty. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127970 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-20 17:59:11 +00:00
Benjamin Kramer
ed8f9589a8 Avoid initializing posix_spawn_file_actions_t if not used. 
- glibc falls back to fork+exec if a file actions object is present.
- On BSDs this saves a malloc.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127969 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-20 15:52:24 +00:00
Argyrios Kyrtzidis
b518c25b3e If a class inherits from RefCountedBaseVPTR allow all its subclasses to be used with IntrusiveRefCntPtr. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127966 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-20 06:14:56 +00:00
Jakob Stoklund Olesen
682eed0da8 Also eliminate redundant spills downstream of inserted reloads. 
This can happen when multiple sibling registers are spilled after live range
splitting.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127965 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-20 05:44:58 +00:00
Jakob Stoklund Olesen
01a46c82e0 Change an argument to a LiveInterval instead of a register number to save some redundant lookups. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127964 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-20 05:44:55 +00:00
Daniel Dunbar
579967a7ec Disable test in a way that keeps lit happy. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127962 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-20 00:04:51 +00:00
Jakob Stoklund Olesen
d2eff137ca Replace a broken LiveInterval::MergeValueInAsValue() with something simpler. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127960 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-19 23:02:49 +00:00
Jakob Stoklund Olesen
c1655e1a3c Add debug output. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127959 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-19 23:02:47 +00:00
Oscar Fuentes
f6474f69d3 Make llvm-config.in configuration more MSYS-friendly. 
Some of those POSIX <-> Windows command line conversions ended on
failure.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127958 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-19 22:52:33 +00:00
Oscar Fuentes
930df9abc5 CMake: store TARGET_TRIPLE on llvm-config.in. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127957 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-19 22:52:25 +00:00
Oscar Fuentes
c12acc7fe7 Update CMake library dependencies. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127956 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-19 22:52:13 +00:00
Daniel Dunbar
7a90e04fc7 Revert r127953, "SimplifyCFG has stopped duplicating returns into predecessors 
to canonicalize IR", it broke a lot of things.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127954 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-19 21:47:14 +00:00
Evan Cheng
ae16d6b972 SimplifyCFG has stopped duplicating returns into predecessors to canonicalize IR 
to have single return block (at least getting there) for optimizations. This
is general goodness but it would prevent some tailcall optimizations.
One specific case is code like this:
int f1(void);
int f2(void);
int f3(void);
int f4(void);
int f5(void);
int f6(void);
int foo(int x) {
  switch(x) {
  case 1: return f1();
  case 2: return f2();
  case 3: return f3();
  case 4: return f4();
  case 5: return f5();
  case 6: return f6();
  }
}

=>
LBB0_2:                                 ## %sw.bb
  callq   _f1
  popq    %rbp
  ret
LBB0_3:                                 ## %sw.bb1
  callq   _f2
  popq    %rbp
  ret
LBB0_4:                                 ## %sw.bb3
  callq   _f3
  popq    %rbp
  ret

This patch teaches codegenprep to duplicate returns when the return value
is a phi and where the phi operands are produced by tail calls followed by
an unconditional branch:

sw.bb7:                                           ; preds = %entry
  %call8 = tail call i32 @f5() nounwind
  br label %return
sw.bb9:                                           ; preds = %entry
  %call10 = tail call i32 @f6() nounwind
  br label %return
return:
  %retval.0 = phi i32 [ %call10, %sw.bb9 ], [ %call8, %sw.bb7 ], ... [ 0, %entry ]
  ret i32 %retval.0

This allows codegen to generate better code like this:

LBB0_2:                                 ## %sw.bb
        jmp     _f1                     ## TAILCALL
LBB0_3:                                 ## %sw.bb1
        jmp     _f2                     ## TAILCALL
LBB0_4:                                 ## %sw.bb3
        jmp     _f3                     ## TAILCALL

rdar://9147433


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127953 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-19 17:17:39 +00:00
Evan Cheng
9344f97108 Minor code re-structuring. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127952 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-19 17:03:16 +00:00
Nadav Rotem
06cc324b9d Add support for legalizing UINT_TO_FP of vectors on platforms which do 
not have native support for this operation (such as X86).
The legalized code uses two vector INT_TO_FP operations and is faster
than scalarizing.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127951 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-19 13:09:10 +00:00
Eli Friedman
415247dac4 Update Passes.html, part 3: alphabetize descriptions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127948 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-19 05:02:14 +00:00
Eli Friedman
de8ec5b3af Update Passes.html, part 2: cleanup a bit more dead docs, a few more 
description updates.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127947 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-19 04:55:29 +00:00
Eli Friedman
e6ed15bccb Update Passes.html, part 1: remove passes which were removed from the tree, 
update short descriptions to match those from the options, alphabetize table
of contents.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127946 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-19 04:47:52 +00:00
Stuart Hastings
9f24110280 Disable test to unbreak Linux. Radar 9156771. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127945 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-19 03:56:38 +00:00
Stuart Hastings
65c8bca788 Reapply 127939 since Daniel fixed the breakage. <rdar://problem/9012638> 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127944 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-19 02:42:31 +00:00
Stuart Hastings
825dd96918 Revert 127939. <rdar://problem/9012638> 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127943 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-19 02:33:56 +00:00
Devang Patel
d847f4702a Test case for r127940. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127941 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-19 01:40:43 +00:00
Stuart Hastings
7257897402 Revise r126127 to address Daniel's comments. <rdar://problem/9012638> 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127939 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-19 01:32:01 +00:00
Johnny Chen
94dad03a96 Fixed an assert by the ARM disassembler for LDRD_PRE/POST. 
The relevant instruction table entries were changed sometime ago to no longer take
<Rt2> as an operand.  Modify ARMDisassemblerCore.cpp to accomodate the change and
add a test case.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127935 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-19 01:16:20 +00:00
Ted Kremenek
1a06d5721a Tweak CrashRecoveryContextCleanup to provide an easy method for clients to select between 'delete' and 'destructor' cleanups, and allow the destructor of CrashRecoveryContextCleanupRegister to be pseudo re-entrant. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127929 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-19 00:59:37 +00:00
Ted Kremenek
fb200e30a4 Tweak CrashRecoveryContext::GetCurrent() to return quickly if 'gCrsahRecoveryEnabled' is false. This avoids us needing to go to thread local storage for 
the performance sensitive case where we are compiling code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127928 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-19 00:59:33 +00:00
Andrew Trick
f6325b9700 FileCheckize a test. 
(one-by-one until valgrind is happy)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127925 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-19 00:41:39 +00:00
Devang Patel
36fae67831 If an AllocaInst referred by DbgDeclareInst is used by a LoadInst then the LoadInst should also get a corresponding llvm.dbg.value intrinsic. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127924 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-18 23:45:43 +00:00
Devang Patel
79fcad85a4 Remove dead code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127923 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-18 23:33:58 +00:00
Devang Patel
9c5822a966 Consider debug info intrinsics pointing to null value as dead instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127922 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-18 23:28:02 +00:00
Jim Grosbach
7b6747ed42 Silence a warning. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127918 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-18 22:50:49 +00:00
Owen Anderson
0082830cb2 Add support to the ARM asm parser for the register-shifted-register forms of basic instructions like ADD. More work left to be done to support other instances of shifter ops in the ISA. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127917 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-18 22:50:18 +00:00
Jim Grosbach
31649e61bc Beginnings of MC-JIT code generation. 
Proof-of-concept code that code-gens a module to an in-memory MachO object.
This will be hooked up to a run-time dynamic linker library (see: llvm-rtdyld
for similarly conceptual work for that part) which will take the compiled
object and link it together with the rest of the system, providing back to the
JIT a table of available symbols which will be used to respond to the
getPointerTo*() queries.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127916 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-18 22:48:41 +00:00