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257 Commits

Author SHA1 Message Date
John McCall a2fabff4f6 Permit constant evaluation of const floating-point variables with 
constant initializers.

llvm-svn: 116138
 2010-10-09 01:34:31 +00:00
Devang Patel 5b389f495b Remove unused argument. 
llvm-svn: 115789
 2010-10-06 15:58:57 +00:00
John McCall e5dd32da11 Teach PopCleanupBlock to correctly handle the possibility of branching through 
a EH-only cleanup as part of a fallthrough branch-through.  That this happens
for this test case is actually a separate bug.

llvm-svn: 115668
 2010-10-05 20:48:15 +00:00
John McCall 0077b22aa4 If we're resolving all outstanding fixups, and there are multiple fixups 
for the same destination, then we must potentially rewrite the initial branch
of every fixup.  Without this patch, a short-circuit check meant to prevent
a switch case from being redundantly added was preventing later fixups from
being processed.  Fixes PR8175 (again).

llvm-svn: 115586
 2010-10-05 02:33:56 +00:00
Fariborz Jahanian 8fb87aec78 Patch implements passing arrays to functions expecting 
vla. Implements pr7827.

llvm-svn: 114737
 2010-09-24 17:30:16 +00:00
John McCall f09d96f76d Adjust a fixup's starting branch if it's being resolved because 
it reached the outermost scope and it hasn't yet been forwarded
to a cleanup.  Fixed PR8175.

llvm-svn: 114259
 2010-09-18 02:24:39 +00:00
John McCall 7f9c92a9a0 When emitting a new-expression inside a conditional expression, 
the cleanup might not be dominated by the allocation code.
In this case, we have to store aside all the delete arguments
in case we need them later.  There's room for optimization here
in cases where we end up not actually needing the cleanup in
different branches (or being able to pop it after the
initialization code).

Also make sure we only call this operator delete along the path
where we actually allocated something.

Fixes rdar://problem/8439196.

llvm-svn: 114145
 2010-09-17 00:50:28 +00:00
John McCall 824c2f537c Implement the EH cleanup to call 'operator delete' if a new-expression throws 
(but not if destructors associated with the full-expression throw).

llvm-svn: 113836
 2010-09-14 07:57:04 +00:00
John McCall 5d865c3292 Teach IR generation to return 'this' from constructors and destructors 
under the ARM ABI.

llvm-svn: 112588
 2010-08-31 07:33:07 +00:00
John McCall e302792b61 GCC didn't care for my attempt at API compatibility, so brute-force everything 
to the new constants.

llvm-svn: 112047
 2010-08-25 11:45:40 +00:00
John McCall 614dbdcd55 Go back to asking CodeGenTypes whether a type is zero-initializable. 
Make CGT defer to the ABI on all member pointer types.
This requires giving CGT a handle to the ABI.
It's way easier to make that work if we avoid lazily creating the ABI.
Make it so.

llvm-svn: 111786
 2010-08-22 21:01:12 +00:00
John McCall a1dee5300b Experiment with using first-class aggregates to represent member function 
pointers.  I find the resulting code to be substantially cleaner, and it
makes it very easy to use the same APIs for data member pointers (which I have
conscientiously avoided here), and it avoids a plethora of potential
inefficiencies due to excessive memory copying, but we'll have to see if it
actually works.

llvm-svn: 111776
 2010-08-22 10:59:02 +00:00
John McCall 84fa510aa9 Abstract more member-pointerness out. 
llvm-svn: 111771
 2010-08-22 04:16:24 +00:00
John McCall 32427785c0 More cleanup enabling. 
llvm-svn: 111070
 2010-08-14 07:46:19 +00:00
John McCall 612942d65f Sketch out a framework for delaying the activation of a cleanup. 
Not yet complete or used.

llvm-svn: 111044
 2010-08-13 21:20:51 +00:00
John McCall 5996699834 Revise r110163: don't mark weak functions nounwind, because the optimizer 
treats that as a contract to be fulfilled by any replacements.

llvm-svn: 110864
 2010-08-11 22:38:33 +00:00
Fariborz Jahanian d539d098a4 IRGen support for functions returning objc object 
types. Fixes PR7865.

llvm-svn: 110832
 2010-08-11 17:37:35 +00:00
Devang Patel dc866e119c Simplify code and add comments, in code that generate debug info for constant integer globals, based on Chris's feedback. 
llvm-svn: 110694
 2010-08-10 17:53:33 +00:00
Devang Patel e03edfd3e7 Even if a constant's evaluated value is used, emit debug info for the constant variable. 
llvm-svn: 110660
 2010-08-10 07:24:25 +00:00
John McCall 7cd1d97e33 Inline a special case of EmitAggregateCopy into EmitNullInitialization 
to avoid the awesome-but-wrong-in-this-case assertion in the canon EAC.
Fixes PR7834.

Also fix a subtle address-space bug in the memset path.

llvm-svn: 110511
 2010-08-07 08:21:30 +00:00
John McCall 8601a75118 Do a very simple pass over every function we emit to infer whether we can 
mark it nounwind based on whether it contains any non-nounwind calls.
<rdar://problem/8087431>

llvm-svn: 110163
 2010-08-03 22:46:07 +00:00
John McCall ba80390307 When creating a jump destination, its scope should be the scope of the 
enclosing normal cleanup, not the top of the EH stack.  I'm *really*
surprised this hasn't been causing more problems.

Fixes rdar://problem/8231514.

llvm-svn: 109569
 2010-07-28 01:07:35 +00:00
John McCall 5cbe152ffc Test for the presence of EH branch-throughs instead of normal branch-throughs. 
I knew this code duplication would bite me.

llvm-svn: 109463
 2010-07-26 22:44:58 +00:00
Douglas Gregor b412e174db Remove the vast majority of the Destroy methods from the AST library, 
since we aren't going to be calling them ever.

llvm-svn: 109377
 2010-07-25 18:17:45 +00:00
John McCall ad5d61e227 Revise cleanup IR generation to fix a major bug with cleanups (PR7686) 
as well as some significant asymptotic inefficiencies with threading
multiple jumps through deep cleanups.

llvm-svn: 109274
 2010-07-23 21:56:41 +00:00