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162 Commits

Author SHA1 Message Date
Torok Edwin
358888da3a Implement changes from Chris's feedback. 
Finish converting lib/Target.

llvm-svn: 75043
 2009-07-08 20:53:28 +00:00
Torok Edwin
ad3be984b7 Start converting to new error handling API. 
cerr+abort -> llvm_report_error
assert(0)+abort -> LLVM_UNREACHABLE (assert(0)+llvm_unreachable-> abort() included)

llvm-svn: 75018
 2009-07-08 18:01:40 +00:00
Owen Anderson
75f0f1cc6c Have scoped mutexes take referenes instead of pointers. 
llvm-svn: 74931
 2009-07-07 18:33:04 +00:00
Owen Anderson
844cf0aa3f Simplify by using no-op-when-not-multithreaded locks. 
llvm-svn: 73719
 2009-06-18 20:36:21 +00:00
Owen Anderson
a59f91c08d Move Threading.[h|cpp] from Support to System. 
llvm-svn: 73707
 2009-06-18 16:54:52 +00:00
Owen Anderson
d7312aff32 Protect the ValueHandle table. 
llvm-svn: 73620
 2009-06-17 17:36:57 +00:00
Dan Gohman
f8f167320d Use true instead of 1 for a boolean value. And fix a copy+pasto 
in a comment.

llvm-svn: 70882
 2009-05-04 17:25:21 +00:00
Dan Gohman
dc96a23780 Apply Jeffrey Yasskin's CallbackVH patch, with minor tweaks from me 
to make the copy constructor and destructor protected, and corresponding
adjustments to the unittests.

llvm-svn: 70644
 2009-05-02 21:10:48 +00:00
Nick Lewycky
e9597399f0 Limit the number of times we're willing to chase pointers. Removes an O(n^2) 
problem from instcombine.

llvm-svn: 69151
 2009-04-15 06:23:41 +00:00
Chris Lattner
939313c44a Add two new classes: WeakVH and AssertingVH. These are both "ValueHandles", 
which are effectively smart pointers to Value*'s.  They are both very light
weight and simple, and react to values being destroyed or being RAUW'd.

WeakVN does a best effort to follow a value around, including through RAUW 
operations and will get nulled out of the value is destroyed.  This is useful
for the eventual "metadata that references a value" work, because it is a
reference to a value that does not show up on its use_* list.

AssertingVH is a pointer that compiles down to a dumb raw pointer when 
assertions are disabled.  When enabled, it emits an assertion if the 
pointed-to value is destroyed while it is still being referenced.  This
is very useful for Maps and other things, and should have caught the recent
bugs in CallGraph and Reassociate, for example.

llvm-svn: 68149
 2009-03-31 22:11:05 +00:00
Gabor Greif
037f4dc1a4 Rearrange operands of the BranchInst, to be able to 
access each with a fixed negative index from op_end().

This has two important implications:
- getUser() will work faster, because there are less iterations
  for the waymarking algorithm to perform. This is important
  when running various analyses that want to determine callers
  of basic blocks.
- getSuccessor() now runs faster, because the indirection via OperandList
  is not necessary: Uses corresponding to the successors are at fixed
  offset to "this".

The price we pay is the slightly more complicated logic in the operator
User::delete, as it has to pick up the information whether it has to free
the memory of an original unconditional BranchInst or a BranchInst that
was originally conditional, but has been shortened to unconditional.
I was not able to come up with a nicer solution to this problem. (And
rest assured, I tried *a lot*).

Similar reorderings will follow for InvokeInst and CallInst. After that
some optimizations to pred_iterator and CallSite will fall out naturally.

llvm-svn: 66815
 2009-03-12 18:34:49 +00:00
Duncan Sands
f7fb4d197c Make stripPointerCasts and getUnderlyingObject 
non-recursive.

llvm-svn: 61479
 2008-12-29 21:06:19 +00:00
Chris Lattner
0be74c4208 These messages should always be emitted when NDEBUG is unset, not when 
NDEBUG is unset and -debug is passed.

llvm-svn: 60986
 2008-12-13 18:37:58 +00:00
Chris Lattner
2f766df51f Comment typeo fix, thanks Duncan! 
llvm-svn: 60429
 2008-12-02 18:33:11 +00:00
Chris Lattner
90d1a3c343 add a little helper function that does PHI translation. 
llvm-svn: 60405
 2008-12-02 07:16:45 +00:00
Duncan Sands
88d8323743 Factorize code: remove variants of "strip off 
pointer bitcasts and GEP's", and centralize the
logic in Value::getUnderlyingObject.  The
difference with stripPointerCasts is that
stripPointerCasts only strips GEPs if all
indices are zero, while getUnderlyingObject
strips GEPs no matter what the indices are.

llvm-svn: 56922
 2008-10-01 15:25:41 +00:00
Bill Wendling
8b4fecfb09 Make pointer parameter const for isUsedInBasicBlock. 
llvm-svn: 56625
 2008-09-25 22:42:01 +00:00
Gabor Greif
984ba5a313 backing out my last commit, it was not intended to go on the trunk 
llvm-svn: 56349
 2008-09-19 15:13:20 +00:00
Gabor Greif
67fa076542 first shot at removing Use::Val 
untested, Use::swap() is definitely not done yet

llvm-svn: 56348
 2008-09-19 15:03:57 +00:00
Evan Cheng
e91c8c4508 Rename instance variables, parameter argument names to eliminate a bunch of compilation warnings with -Wshadow. 
llvm-svn: 53970
 2008-07-24 00:08:56 +00:00
Chris Lattner
96b3955e9b fix some warnings when assertions are disabled. 
llvm-svn: 52587
 2008-06-21 19:47:03 +00:00
Evan Cheng
5897328890 Do not speculatively execute an instruction by hoisting it to its predecessor BB if any of its operands are defined but not used in BB. The transformation will prevent the operand from being sunk into the use block. 
llvm-svn: 52244
 2008-06-12 21:15:59 +00:00
Nate Begeman
253fc69ff3 Move the operator new and operator delete out of line. This fixes an issue with 
operator new() referring to the static initTags function, which has to be in the 
same linkage unit as any file including User.h.

llvm-svn: 51136
 2008-05-15 01:23:11 +00:00
Anton Korobeynikov
ddb93e7a02 Turn StripPointerCast() into a method 
llvm-svn: 50836
 2008-05-07 22:54:15 +00:00
Anton Korobeynikov
90ee6d6616 Make StripPointerCast a common function (should we mak it method of Value instead?) 
llvm-svn: 50775
 2008-05-06 22:52:30 +00:00
Chris Lattner
757d7d318a fix a bug in my previous patch, a classic =/== bug. 
llvm-svn: 50483
 2008-04-30 15:27:09 +00:00
Chris Lattner
710d05695f add a method for comparing to see if a value has a specified name. 
llvm-svn: 50465
 2008-04-30 03:55:40 +00:00
Nick Lewycky
c0b361a17c Print the name, not a pointer. 
llvm-svn: 47796
 2008-03-01 17:20:55 +00:00
Devang Patel
e60ebc7744 Let invoke return aggregate value. 
llvm-svn: 47425
 2008-02-21 02:14:01 +00:00
Devang Patel
702c4a60a6 Let function call return aggregate. 
Now, we have very first multiple return value testcase!

llvm-svn: 47424
 2008-02-21 01:54:02 +00:00
Anton Korobeynikov
0c5e186924 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
Chris Lattner
ad9a6ccb83 Remove attribution from file headers, per discussion on llvmdev. 
llvm-svn: 45418
 2007-12-29 20:36:04 +00:00
Gordon Henriksen
8430f1ff9a Reverting dtor devirtualization patch. 
_sabre_: it has a major problem: by the time ~Value is run, all of the "parts" of the derived classes have been destroyed
_sabre_: the vtable lives to fight another day

llvm-svn: 44760
 2007-12-10 02:14:30 +00:00
Chris Lattner
11bc69b3c8 fix some warnings. 
llvm-svn: 44756
 2007-12-10 01:51:22 +00:00
Chris Lattner
3d939a50a5 Fix a big problem in the recent dtor refactoring work, now it passes 2007-11-19-InlineAsm.ll 
llvm-svn: 44755
 2007-12-10 01:48:29 +00:00
Gordon Henriksen
a18a78e6e5 Devirtualizing Value destructor (PR889). Patch by Pawel Kunio! 
llvm-svn: 44747
 2007-12-09 22:46:10 +00:00
Dan Gohman
30ba45b569 Use empty() member functions when that's what's being tested for instead 
of comparing begin() and end().

llvm-svn: 42585
 2007-10-03 19:26:29 +00:00
Chris Lattner
14442c9a4d Make Value::getNameLen not crash on an empty name, fixing PR1712. 
llvm-svn: 42444
 2007-09-28 20:09:40 +00:00
Chris Lattner
07ac73b539 simplify code, improve a comment. 
llvm-svn: 41205
 2007-08-21 00:21:07 +00:00
Chris Lattner
de900e3b6c add Value::getNameStart/getNameLen() accessors. 
llvm-svn: 40989
 2007-08-10 15:34:35 +00:00
Chris Lattner
6dbed4d4ca Fix a nasty memory leak, caused by my revamp of the value symbol table. 
llvm-svn: 35195
 2007-03-20 00:18:10 +00:00
Jeff Cohen
98c99a3a02 Unbreak VC++ build. 
llvm-svn: 34917
 2007-03-05 00:00:42 +00:00
Chris Lattner
9084bb5471 rewrite Value::takeName to take advantage of the new symtab stuff. This 
causes it to require no allocations and no symtab lookups in the common
case.  This speeds up instcombine 9.2% on 447.dealII.

llvm-svn: 34324
 2007-02-15 20:01:43 +00:00
Chris Lattner
fbd6928545 Add a new Value::getNameStr method, which is preferred over getName. 
llvm-svn: 34310
 2007-02-15 18:53:54 +00:00
Chris Lattner
cc543b031e add a setName variant that takes a null-terminated string. This can be 
used to avoid std::string allocations in common cases.

llvm-svn: 34232
 2007-02-13 07:53:34 +00:00
Chris Lattner
a48bf1bdbf Add new setName accessor which doesn't require creating a string. 
llvm-svn: 34197
 2007-02-12 18:52:59 +00:00
Chris Lattner
5a58a65c10 Switch ValueSymbolTable to use StringMap<Value*> instead of std::map<std::string, Value*> 
as its main datastructure.  There are many improvements yet to be made, but
this speeds up opt --std-compile-opts on 447.dealII by 7.3%.

llvm-svn: 34193
 2007-02-12 05:18:08 +00:00
Chris Lattner
676ffe699d fix uninitialized variable 
llvm-svn: 34182
 2007-02-11 19:12:18 +00:00
Chris Lattner
50ea7bc913 add an optimization for the case where the src has no name 
llvm-svn: 34174
 2007-02-11 01:04:09 +00:00
Chris Lattner
e8dd3c90f1 add a helper method: Value::takeName 
llvm-svn: 34171
 2007-02-11 00:37:27 +00:00