to run last because it needs to know the exact size and position of every
basic block.  Currently CodePlacementOpt is set up to run last.  It might be
worthwhile to investigate reordering these passes, but for now, let's just
make it work.

llvm-svn: 72037

llvm-svn: 72030

and pointer types safely if they only do so when the sizes are the same.
llvm-gcc is such a client.

llvm-svn: 72029

llvm-svn: 72026

between integers and pointers when the source type is marked signed,
since inttoptr and ptrtoint always use zero-extension when the destination
is larger than the source.

llvm-svn: 72025

llvm-svn: 72024

Some comment cleanup.

llvm-svn: 72022

width of a terminal. Don't try to get the width of a terminal if we
don't have this header.

llvm-svn: 72018

avoid ambiguity with the word "use" in IVStrideUse.

llvm-svn: 72012

llvm-svn: 72011

bits have been stripped out by instcombine.

llvm-svn: 72010

llvm-svn: 72009

consistency with other routines that use a null Loop* to mean code
not contained by any loop.

llvm-svn: 72008

instead of within their controlling expressions.

llvm-svn: 72007

type mismatches.

llvm-svn: 72006

entering a loop is a non-split critical edge.

llvm-svn: 72004

and similar to ConstantInt's isOne().

llvm-svn: 72003

It doesn't matter for piped input, but it's annoying when typing at the 
console.

llvm-svn: 71998

for PostRAScheduler. 

llvm-svn: 71991

llvm-svn: 71987

llvm-svn: 71976

llvm-svn: 71975

llvm-svn: 71935

llvm-svn: 71934

explicit register define operands.

llvm-svn: 71933

llvm-svn: 71932

was overenthusiastically deleted in r70234.

llvm-svn: 71926

to avoid an ambiguous else.

llvm-svn: 71924

The following is checked:

* Operand counts: All explicit operands must be present.

* Register classes: All physical and virtual register operands must be
  compatible with the register class required by the instruction descriptor.

* Register live intervals: Registers must be defined only once, and must be
  defined before use.

The machine code verifier is enabled with the command-line option
'-verify-machineinstrs', or by defining the environment variable
LLVM_VERIFY_MACHINEINSTRS to the name of a file that will receive all the
verifier errors.

llvm-svn: 71918

Again, no intendtional functionality change.

llvm-svn: 71854

llvm-svn: 71850

llvm-svn: 71848

llvm-svn: 71828

though the classes have been marked with "VISIBILITY_HIDDEN".

llvm-svn: 71827

logical/sane approach to organizing all of the stuff that goes into writing out
DWARF information. Honestly? even this is too complex for what it's supposed to
be doing.

Trivia: It *looks* like there would be functionality changes, however there aren't!
llvm-svn: 71821

llvm-svn: 71813

llvm-svn: 71812

Part one of many.

llvm-svn: 71785

llvm-svn: 71784

adding another copy.

llvm-svn: 71783