llvm-svn: 46825

explicitly document that return statement argument does not necessarily follow the result type of the function.  Add testcase.

llvm-svn: 46823

http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20080128/057882.html

This is causing a miscompilation on PPC G5 and just now seeing it on iMac x86-64.

llvm-svn: 46822

llvm-svn: 46821

llvm-svn: 46819

llvm-svn: 46818

llvm-svn: 46817

This is not ready for review or hacking, this is a work in progress :)

llvm-svn: 46816

llvm-svn: 46815

"if(x)". On the true branch we know the value is != 0, and on the false branch
we know it is 0.

llvm-svn: 46814

RegAllocaLocal still *requires* LiveVariables since it runs PHIElimination, followed by TwoAddress which requires LiveVariables. We cannot run LiveVariables on non-SSA code.

llvm-svn: 46813

llvm-svn: 46812

llvm-svn: 46811

llvm-svn: 46810

llvm-svn: 46809

llvm-svn: 46808

llvm-svn: 46807

llvm-svn: 46806

llvm-svn: 46805

llvm-svn: 46804

llvm-svn: 46803

previously in an opaque context.  If we didn't do this, 
computing its layout could be wasted: just be lazy.

llvm-svn: 46802

llvm-svn: 46801

static variables outside functions.

llvm-svn: 46800

llvm-svn: 46799

tag decl after it has been completed

llvm-svn: 46798

llvm-svn: 46797

Removed lval::SymIntConstraintVal; wrappers for symbolic constraints are not lvalues (only integers that evaluate to !0 or 0).

llvm-svn: 46796

symbols (for constant integers).

llvm-svn: 46795

ValueState no longer inherits FoldingSetNode (not needed).
Removed redundant operator= implementation for ValueState (it simply did the default behavior).

llvm-svn: 46794

using the bump-pointer allocator and a placed new; we accidentally allocated
a ValueStateImpl* instead, causing an overrun when we did a placed new().

llvm-svn: 46793

eliminating a bunch of forwarding methods and generally 
simplifying things.

llvm-svn: 46792

level code in clang.  This is a cleanup, but does implement "-o" for 
-emit-llvm.  One effect of this is that "clang foo.c -emit-llvm" will now
emit into foo.ll instead of stdout.  Use "clang foo.c -emit-llvm -o -" or 
"clang < foo.c -emit-llvm" to get the old behavior.

llvm-svn: 46791

Throttle the non-local dependence analysis for basic blocks with more than 50 predecessors. Added command line option to play with this threshold.

llvm-svn: 46790

This action will add constraints to the possible values of a symbol.
Still needs to be debugged.

llvm-svn: 46789

llvm-svn: 46788

Sema::ActOnTranslationUnitScope.  The various ObjC pieces at the top
of Sema.cpp should be moved into SemaObjC or something.

llvm-svn: 46787

llvm-svn: 46786

llvm-svn: 46785

llvm-svn: 46784