Commit Graph

47 Commits

Author SHA1 Message Date
Chris Lattner d95377341b Handle Unary ! in EmitBranchOnBoolExpr, so that we can efficiently
codegen stuff like "if (!(X && Y))"

llvm-svn: 59115
2008-11-12 08:13:36 +00:00
Chris Lattner cd439299b0 Move EmitBranchOnBoolExpr and ConstantFoldsToSimpleInteger to
CodeGenFunction.cpp.  Change VisitConditionalOperator to use
constant fold instead of codegen'ing a constant conditional.

Change ForStmt to use EmitBranchOnBoolExpr, this shrinks
expr.c very slightly to 40239 lines.

llvm-svn: 59113
2008-11-12 08:04:58 +00:00
Daniel Dunbar 5c7e3935f1 Rework IRgen invariant w.r.t. current insert point.
- EmitStmt is no longer required to finish with a current insertion
   point defined (i.e. it does not need to make dummy
   blocks). Instead, it can clear the insertion point in the builder
   which indicates that the current insertion point is unreachable.
 - CodeGenFunction provides HaveInsertPoint and EnsureInsertPoint
   which respectively test if there is an insert point and ensure an
   insertion point exists (by making a dummy block).
 - Clearly mark functions in CodeGenFunction which can be called with
   no insertion point defined. Currently this is a limited set, and
   EmitStmt simply EnsureInsertPoint()s before emitting subsequent IR.

Remove EmitDummyBlock, which is no longer needed. Clients who haven't
already cleared the insertion point (typically via EmitBranch) can do
so by hand.

Remove isDummyBlock, which has effectively been renamed to
HaveInsertPoint.

The main thrust of this change is that we no longer have create dummy
blocks just to destroy them a short time later in EmitBlock in the
common case that there is no unreachable code following something like
a goto. 

Additionally, this means that we are not using the hokey condition in
isDummyBlock that a block without a name is a dummy block. Guess how
well that works when we never emit block names!

llvm-svn: 59089
2008-11-11 23:11:34 +00:00
Daniel Dunbar fab3f936dd Emit debug region end in unified return block.
llvm-svn: 59081
2008-11-11 20:59:54 +00:00
Chris Lattner 5b1964b5f9 short circuit && and || when possible. This substantially reduces
the size of the -O0 output on some cases.  For example, on expr.c from
176.gcc, it shrinks the .ll file from 43164 to 42835 lines, and removed
references to two external symbols.

llvm-svn: 59034
2008-11-11 07:41:27 +00:00
Daniel Dunbar 05e629aec6 Remove CodeGenFunction::StartBlock.
- Was confusing and only used in one small part of the code.

llvm-svn: 59020
2008-11-11 04:12:31 +00:00
Daniel Dunbar 75283ff38a Centralize basic block creation in CodeGenFunction::createBasicBlock.
- No functionality change.

llvm-svn: 59017
2008-11-11 02:29:29 +00:00
Anders Carlsson 13abd7e98b Implement lowering of va_arg in clang directly. (This is 32-bit X86 only for now).
llvm-svn: 58681
2008-11-04 05:30:00 +00:00
Daniel Dunbar 5b06d9f202 Don't run the verifier as part of IRgen, this is now down (per module)
in the driver (this means we no longer run the verifier per function, however).

llvm-svn: 58307
2008-10-28 00:36:04 +00:00
Daniel Dunbar 354d278518 Debug info bug fix, function start wasn't getting generated correctly
for Obj-C methods.

llvm-svn: 57769
2008-10-18 18:22:23 +00:00
Daniel Dunbar b9fd902fdc Change CGDebugInfo::setLocation to just ignore invalid locations. This
simplifies clients.

Also, add assert that RegionStack is empty when the CGDebugInfo is
destroyed.

llvm-svn: 57684
2008-10-17 16:15:48 +00:00
Daniel Dunbar 274ff37583 Simplify code to emit the unified return block and move it to the end
of the function.

llvm-svn: 56752
2008-09-27 07:15:59 +00:00
Daniel Dunbar d9d1f5f522 Print current function on verification failures.
llvm-svn: 56291
2008-09-17 21:13:22 +00:00
Anders Carlsson 9396a89899 Make sure to store the exception in the catch parameter.
llvm-svn: 56102
2008-09-11 09:15:33 +00:00
Daniel Dunbar 613855c8af Move ABI specific code for functions / calls to CGCall.cpp:
- Factor out EmitFunction{Pro,Epi}log

llvm-svn: 56031
2008-09-09 23:27:19 +00:00
Daniel Dunbar bc915f4025 Factor CodeGenFunction::StartFunction out of GenerateCode and
StartObjCMethod.

llvm-svn: 56030
2008-09-09 23:14:03 +00:00
Daniel Dunbar 54bb1933b1 Use a unified return block.
- For the time being this means our emitted code is somewhat worse,
   especially for aggregates. This will be fixed.

llvm-svn: 56013
2008-09-09 21:00:17 +00:00
Daniel Dunbar f2cf6d16e6 Avoid superfluous errors regarding variable-length arrays (casts).
llvm-svn: 55759
2008-09-04 03:43:08 +00:00
Anders Carlsson 2e744e8aa6 Stub out CodeGenFunction::EmitObjCForCollectionStmt.
Add CodeGenFunction::EmitMemSetToZero and make AggExprEmitter::EmitAggregateClear use it.

llvm-svn: 55573
2008-08-30 19:51:14 +00:00
Daniel Dunbar 89654eef3a Objective-C @synthesize support.
- Only supports simple assignment and atomic semantics are ignored.
 - Not quite usable yet because the methods do not actually get added
   to the class metadata.
 - Added ObjCPropertyDecl::getSetterKind (one of Assign, Copy, Retain).
 - Rearrange CodeGenFunction so synthesis can reuse function prolog /
   epilog code.

llvm-svn: 55365
2008-08-26 08:29:31 +00:00
Eli Friedman 3d421e190a Do typechecking and codegen for K&R-style function declarations
correctly.  Not a regression, but made more obvious by my recent fix 
which made function type compatibility checking a bit more strict.

llvm-svn: 55339
2008-08-25 21:31:01 +00:00
Daniel Dunbar a7c8cf6200 Change WarnUnsupported to ErrorUnsupported (in name and in practice).
- We are beyond the point where this shows up often and when it does
   generating miscompiled files is bad.

llvm-svn: 54836
2008-08-16 00:56:44 +00:00
Daniel Dunbar 56fdb6ae69 More #include cleaning
- Kill unnecessary #includes in .cpp files. This is an automatic
   sweep so some things removed are actually used, but happen to be
   included by a previous header. I tried to get rid of the obvious
   examples and this was the easiest way to trim the #includes in one
   fell swoop.
 - We now return to regularly scheduled development.

llvm-svn: 54632
2008-08-11 06:23:49 +00:00
Daniel Dunbar 6e8aa537f8 More #include cleaning
- Drop {Decl.h,DeclObjC.h,IdentifierTable.h} from Expr.h
 - Moved Sema::getCurMethodDecl() out of line (dependent on
   ObjCMethodDecl via dyn_cast).

llvm-svn: 54629
2008-08-11 05:35:13 +00:00
Daniel Dunbar ad319a73f2 More #include cleaning
- Remove internal uses of AST.h

llvm-svn: 54628
2008-08-11 05:00:27 +00:00