to return pointers instead of references, since this is always what
is needed.

llvm-svn: 46857

struct {
  char a[3];
  unsigned char b:1;
};

Fix PR1990.

llvm-svn: 46856

llvm-svn: 46855

llvm-svn: 46854

as <unknown>. And make some minor adjustments to the MemOperand
dump format.

llvm-svn: 46853

Minor cleanup from yesterday's -fms-extension commit. Move __int* MS keywords to predefined macros. This removes some of the MS-madness from Parser::ParseDeclarationSpecifiers().

llvm-svn: 46852

Minor cleanups with generating nodes for NULL-pointer dereferences.

llvm-svn: 46851

Before:
_main:
        subq    $8, %rsp
        leaq    _X(%rip), %rax
        movsd   8(%rax), %xmm1
        movss   _X(%rip), %xmm0
        call    _t
        xorl    %ecx, %ecx
        movl    %ecx, %eax
        addq    $8, %rsp
        ret
Now:
_main:
        subq    $8, %rsp
        movsd   _X+8(%rip), %xmm1
        movss   _X(%rip), %xmm0
        call    _t
        xorl    %ecx, %ecx
        movl    %ecx, %eax
        addq    $8, %rsp
        ret

Notice there is another idiotic codegen issue that needs to be fixed asap:
xorl    %ecx, %ecx
movl    %ecx, %eax

llvm-svn: 46850

llvm-svn: 46849

llvm-svn: 46848

Modified the driver to pass the Diagnostic object to GRConstants.

llvm-svn: 46847

llvm-svn: 46846

which pastes together a comment.  This is only enabled with 
-fms-extensions of course.

llvm-svn: 46845

llvm-svn: 46844

llvm-svn: 46843

llvm-svn: 46841

llvm-svn: 46840

Fixed bug in RemoveDeadBindings by implementing a simple "mark-and-sweep"
cleaner over the bindings, starting from the Decls and block-level expressions
that are considered "live" by the Liveness analysis.

Fixed bug in isa<> implementation for class LValue.

Added "VisitDeclRefExpr" to GRConstants so that we explicitly bind the current
value of variable to the Block-level Expression (i.e., when the DeclRefExpr is
at the CFGBlock level).

llvm-svn: 46839

Implement -fms-extensions. This allows us to fuzzy parse non-standard MS constructs used in "windows.h".

llvm-svn: 46838

as the initializers for DeclStmts were not being registered as being
live at the start of the DeclStmt.

llvm-svn: 46837

llvm-svn: 46836

Fixed insidious bug in handling dereferences.

llvm-svn: 46835

llvm-svn: 46833

in a smaller encoding on disk.

llvm-svn: 46832

code structure is more suitable for additional symbolic analysis.

llvm-svn: 46831

llvm-svn: 46830

initializer problem, a minor tweak to the way the
DAGISelEmitter finds load/store nodes, and a renaming of the
new PseudoSourceValue objects.

llvm-svn: 46827

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