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3881 Commits

Author SHA1 Message Date
Devang Patel
0884a60eb5 Keep track of artificial scopes introduced by line directives. For example, 
#line 41 "bar.c"
  dummy (1, i);
#line 24 "bar.h"
  i = f2 (i);
#line 44 "bar.c"

This is tested by step-line.exp in gdb testsuite.

llvm-svn: 109189
 2010-07-22 22:29:16 +00:00
John McCall
775f9f9919 Turn off EH cleanups for __block variables; they caused some internal buildbot 
failures.  There's a radar tracking this.

llvm-svn: 109170
 2010-07-22 21:25:44 +00:00
Fariborz Jahanian
6e7e8cc19d atch for implementation of objective-c's -Wselector 
warning flag in clang. Little more to do
for a PCH issue. Radar 6507158.

llvm-svn: 109129
 2010-07-22 18:24:20 +00:00
Devang Patel
222f4be834 ObjCId is special "struct objc_object". Make this explicit in debug info. 
This is tested by objc-rbreak.exp in gdb testsuite.

llvm-svn: 109050
 2010-07-21 22:41:25 +00:00
Devang Patel
65497583b5 Fix regression caused by r108911. 
Do not override known debug loc with unknown debug loc.
This is tested by sections.exp in gdb testsuite.

llvm-svn: 109022
 2010-07-21 18:08:50 +00:00
David Chisnall
4715d161c0 Don't crash when sending a message inside a block with the non-fragile ABI (GNU runtime). 
llvm-svn: 109012
 2010-07-21 15:28:28 +00:00
David Chisnall
7fa204edc7 Mark the load after calling objc_msg_lookup_sender() so that it doesn't get optimised away (GNU runtime). 
llvm-svn: 109010
 2010-07-21 12:55:25 +00:00
John McCall
cda666ccd8 Rename LazyCleanup -> Cleanup. No functionality change for these last three 
commits.

llvm-svn: 109000
 2010-07-21 07:22:38 +00:00
John McCall
20141f2d8c Rip out EHCleanupScope. 
llvm-svn: 108999
 2010-07-21 07:11:21 +00:00
John McCall
7535ee0352 Kill the CleanupBlock API. 
llvm-svn: 108998
 2010-07-21 07:04:01 +00:00
John McCall
65bea08879 Switch the fragile-ABI @finally/@synchronized cleanup over to using a lazy 
cleanup.

llvm-svn: 108997
 2010-07-21 06:59:36 +00:00
John McCall
0d42a41a63 Code simplification. 
llvm-svn: 108996
 2010-07-21 06:45:54 +00:00
John McCall
fb442ae7b9 Switch the main possibly-conditional temporary cleanup over to being lazy. 
llvm-svn: 108995
 2010-07-21 06:44:28 +00:00
John McCall
8680f87d99 Switch the destructor for a temporary arising from a reference binding over to 
using a lazy cleanup.

llvm-svn: 108994
 2010-07-21 06:29:51 +00:00
John McCall
da650e091f Switch the __cxa_guard_abort cleanup to being a lazy cleanup. 
llvm-svn: 108993
 2010-07-21 06:20:50 +00:00
John McCall
a464ff9d15 Switch some random local-decl cleanups over to using lazy cleanups. Turn on 
the block-release unwind cleanup:  we're never going to test it if we don't turn
it on.

llvm-svn: 108992
 2010-07-21 06:13:08 +00:00
John McCall
906da4bb52 Switch finally cleanups over to being lazy cleanups. We get basically nothing 
from the laziness features here except better block ordering, but it removes yet
another CleanupBlock use.

llvm-svn: 108990
 2010-07-21 05:47:49 +00:00
John McCall
f99a631e4e Implement proper base/member destructor EH chaining. 
llvm-svn: 108989
 2010-07-21 05:30:47 +00:00
John McCall
53cad2ef04 Change PushDestructorCleanup to use lazy cleanups. 
llvm-svn: 108979
 2010-07-21 01:41:18 +00:00
John McCall
1d9875654f Convert the EH cleanups for base and member destructors in a constructor into 
lazy cleanups.

llvm-svn: 108978
 2010-07-21 01:23:41 +00:00
Douglas Gregor
05fc5be32f Implement zero-initialization for array new when there is an 
initializer of (). Make sure to use a simple memset() when we can, or
fall back to generating a loop when a simple memset will not
suffice. Fixes <rdar://problem/8212208>, a regression due to my work
in r107857.

llvm-svn: 108977
 2010-07-21 01:10:17 +00:00
John McCall
1e67040fb7 Convert the end-catch call for finally blocks to a lazy cleanup. This kills off 
the last of the shared-code cleanups.

llvm-svn: 108975
 2010-07-21 00:52:03 +00:00
John McCall
c20acd31f7 Convert the ObjC @synchronized cleanups to laziness. This is not actually 
a big deal, except that I want to eliminate the shared-code EH cleanups
in preparation for a significant algorithmic fix.

llvm-svn: 108973
 2010-07-21 00:41:47 +00:00
John McCall
8f51041184 Add a little helper method which will be useful soon. 
llvm-svn: 108972
 2010-07-21 00:40:03 +00:00
Devang Patel
0043977f09 Remove unintended code that was checked in as part of r108916. 
llvm-svn: 108951
 2010-07-20 22:32:37 +00:00
Devang Patel
11a42a4655 Remove unused argument. 
llvm-svn: 108946
 2010-07-20 22:20:10 +00:00
John McCall
5add20cefa Fix the IR generation for catching pointers by references. 
Fixes <rdar://problem/8212123>.

llvm-svn: 108944
 2010-07-20 22:17:55 +00:00
Chris Lattner
32ac583d91 in 'new int[4]', constant fold the 4*4=16 instead of 
doing an overflow check.

llvm-svn: 108943
 2010-07-20 21:55:52 +00:00
Chris Lattner
f2f3870189 Follow the implementation approach suggested by PR6687, 
which generates more efficient and more obviously conformant
code.  We now test for overflow of the multiply then force
the result to -1 if so.  On X86, this generates nice code
like this:

__Z4testl:                              ## @_Z4testl
## BB#0:                                ## %entry
	subl	$12, %esp
	movl	$4, %eax
	mull	16(%esp)
	testl	%edx, %edx
	movl	$-1, %ecx
	cmovel	%eax, %ecx
	movl	%ecx, (%esp)
	call	__Znam
	addl	$12, %esp
	ret

llvm-svn: 108927
 2010-07-20 21:07:09 +00:00
Fariborz Jahanian
217af240b5 Adopt objc_assign_threadlocal() for __thread variables of GC types. 
Implements radar 8203301.

llvm-svn: 108917
 2010-07-20 20:30:03 +00:00
Devang Patel
6c01820900 Print template argument names for template class. 
llvm-svn: 108916
 2010-07-20 20:24:18 +00:00
Chris Lattner
26008e07de implement rdar://5739832 - operator new should check for overflow in multiply, 
causing clang to compile this code into something that correctly throws a
length error, fixing a potential integer overflow security attack:

void *test(long N) {
  return new int[N];
}

int main() {
  test(1L << 62);
}

We do this even when exceptions are disabled, because it is better for the
code to abort than for the attack to succeed.

This is heavily based on a patch that Fariborz wrote.

llvm-svn: 108915
 2010-07-20 20:19:24 +00:00
Dan Gohman
481e40c681 Use getDebugLoc and setDebugLoc instead of getDbgMetadata and setDbgMetadata, 
avoiding MDNode overhead.

llvm-svn: 108911
 2010-07-20 20:13:52 +00:00
Chris Lattner
b7a95cf165 delete a loop that just generates dead code. In an example 
like this:

void *test(long N) {
  return new int[N][42][42];
}

the loop generates two dead mul instructions:

  %tmp = load i64* %N.addr                        ; <i64> [#uses=2]
  %0 = mul i64 %tmp, 7056                         ; <i64> [#uses=1]
  %1 = mul i64 %tmp, 42                           ; <i64> [#uses=1]
  %2 = mul i64 %1, 42                             ; <i64> [#uses=0]
  %call = call noalias i8* @_Znam(i64 %0)         ; <i8*> [#uses=1]

The scale of these multiplies is already handled by the typesize stuff.

llvm-svn: 108884
 2010-07-20 18:49:33 +00:00
Chris Lattner
cb46bdc34f remove the special case for constant array sizes from 
EmitCXXNewAllocSize.  This code uses IRBuilder, which does
constant folding already.

llvm-svn: 108882
 2010-07-20 18:45:57 +00:00
Jim Grosbach
71d963e954 Re-apply fixed version of 108749, correctly conditionalizing the new sections on 
ObjC ABI version 2 this time.

llvm-svn: 108847
 2010-07-20 16:20:26 +00:00
Sebastian Redl
c57d34bc35 Update ImplicitCastExpr to be able to represent an XValue. 
llvm-svn: 108807
 2010-07-20 04:20:21 +00:00
Stuart Hastings
7d7bc561bf Correct line info for declarations/definitions. Radar 8063111. 
llvm-svn: 108785
 2010-07-19 23:56:31 +00:00
Jim Grosbach
50c63168ed Temporarily revert. Some odd internal breakage is likely related. 
llvm-svn: 108764
 2010-07-19 22:43:34 +00:00
Jim Grosbach
f699594de8 Put ObjC method names, method types and class names in separate string literal 
sections. rdar://8207705

llvm-svn: 108749
 2010-07-19 20:54:43 +00:00
Eli Friedman
f8340deacd Fix mangling for static member variables of classes inside an extern "C" 
linkage specification.  Not sure if this is the ideal fix, but I'm reasonably
sure it's correct vs. gcc.

llvm-svn: 108656
 2010-07-18 20:49:59 +00:00
Chandler Carruth
bc8cab16c5 Improve the representation of the atomic builtins in a few ways. First, we make 
their call expressions synthetically have the "deduced" types based on their
first argument. We only insert conversions in the AST for arguments whose
values require conversion to match the value type expected. This keeps PR7600
closed by maintaining the return type, but avoids assertions due to unexpected
implicit casts making the type unsigned (test case added from Daniel).

The magic is moved into the codegen for the atomic builtin which inserts the
casts as needed at the IR level to raise the type to an integer suitable for
the LLVM intrinsic. This shouldn't cause any real change in functionality, but
now we can make the builtin be more truly polymorphic.

llvm-svn: 108638
 2010-07-18 07:23:17 +00:00
Chris Lattner
ad4f38b1a9 BUILD_ARCHIVE is the default for libraries, no need to set it. 
llvm-svn: 108633
 2010-07-18 00:14:47 +00:00
Eli Friedman
3ee1022f37 Fix crash initializing a bit-field with a non-constant in a place where we 
try to evaluate the initializer as a constant.

llvm-svn: 108632
 2010-07-17 23:55:01 +00:00
John McCall
36ea3723c0 The GNU-runtime ObjC personality function doesn't let us rethrow with URR for 
multiple reasons.  Rethrow with _objc_exception_throw instead.  Fixes PR7656.

llvm-svn: 108595
 2010-07-17 00:43:08 +00:00
Eli Friedman
eca55afea3 Fix for PR3800: make sure not to evaluate the expression for a read-write 
asm operand twice.

llvm-svn: 108489
 2010-07-16 00:55:21 +00:00
Daniel Dunbar
3348e2d175 IRgen: Support user defined attributes on block runtime functions. 
- This issue here is that /usr/include/Blocks.h wants to define some of the
   block runtime globals as weak, depending on the target. This doesn't work in
   Clang because we aren't using the AST decl for these globals.

 - The fix is a pretty gross hack which just watches all the decls for the
   specific blocks globals we need to know about; if we see one we use it,
   otherwise we use the hand coded type.

   In time, I would like to clean this up by changing IRgen to ask Sema/AST for
   the decl, which would then be lazily loaded from the builtin table if
   necessary. This could be used in a whole host of places in IRgen and would
   get rid of a lot of grotty hand coding of LLVM IR; however, we need some
   extra Sema support for this as well as support for builtin global variables.

llvm-svn: 108482
 2010-07-16 00:00:19 +00:00
Daniel Dunbar
900546d2e3 IRgen: Move blocks runtime interfaces to CodeGenModule. 
llvm-svn: 108481
 2010-07-16 00:00:15 +00:00
John McCall
70013b640f When deferring the emission of declarations with initializers in C++, remember 
the order they appeared in the translation unit.  If they get emitted, put them
in their proper order.  Fixes rdar://problem/7458115

llvm-svn: 108477
 2010-07-15 23:40:35 +00:00
Devang Patel
8fd6499a97 Set "optimization is ON" and supply other optional parameters. This helps codegenerator preserve info in case the symbol is deleted. 
llvm-svn: 108471
 2010-07-15 23:09:46 +00:00