llvm-svn: 51819

llvm-svn: 51818

llvm-svn: 51817

llvm-svn: 51816

llvm-svn: 51814

we did not truncate the value down to i1 with (x&1).  This caused a problem
when the computation of x was nontrivial, for example, "add i1 1, 1" would 
return 2 instead of 0.

This makes the testcase compile into:

...
  llvm_cbe_t = (((llvm_cbe_r == 0u) + (llvm_cbe_r == 0u))&1);
  llvm_cbe_u = (((unsigned int )(bool )llvm_cbe_t));
...

instead of:

...
  llvm_cbe_t = ((llvm_cbe_r == 0u) + (llvm_cbe_r == 0u));
  llvm_cbe_u = (((unsigned int )(bool )llvm_cbe_t));
...

This fixes a miscompilation of mediabench/adpcm/rawdaudio/rawdaudio and
403.gcc with the CBE, regressions from LLVM 2.2. Tanya, please pull 
this into the release branch.

llvm-svn: 51813

getSwappedPredicate, from ICmpInst and FCmpInst into common
methods in CmpInst. This allows CmpInsts to be manipulated
generically.

llvm-svn: 51810

index for the input pattern in terms of the output pattern. Instead
keep track of how many fixed operands the input pattern actually
has, and have the input matching code pass the output-emitting
function that index value. This simplifies the code, disentangles
variables_ops from the support for predication operations, and
makes variable_ops more robust.

llvm-svn: 51808

llvm-svn: 51807

insertvalue and extractvalue to use constant indices instead of
Value* indices. And begin updating LangRef.html.

There's definately more to come here, but I'm checking this 
basic support in now to make it available to people who are
interested.

llvm-svn: 51806

llvm-svn: 51795

llvm-svn: 51794

llvm-svn: 51793

llvm-svn: 51792

llvm-svn: 51791

llvm-svn: 51790

llvm-svn: 51789

llvm-svn: 51788

llvm-svn: 51786

llvm-svn: 51784

llvm-svn: 51782

llvm-svn: 51781

Preserve the register coallescer, and update live intervals more correctly by triggering a renumbering after phi elimination.

llvm-svn: 51780

Since LCSSA switched over to DenseMap, we have to be more careful to avoid iterator invalidation.  Fixes PR2385.

llvm-svn: 51777

llvm-svn: 51775

once (ie, at two different places in the source, not two times on the
commandline).

llvm-svn: 51771

llvm-svn: 51770

insertvalue / extractvalue instructions.

llvm-svn: 51766

llvm-svn: 51761

llvm-svn: 51760

llvm-svn: 51759

llvm-svn: 51758

llvm-svn: 51757

llvm-svn: 51756

llvm-svn: 51755

It can be handy to have all information about options gathered in a single place
to provide an overview of all supported options. This patch allows the following:

def Options : OptionList<[
(switch_option "E", (help "Help string")),
(alias_option "quiet", "q")
...
]>;

Tool-specific option properties (like 'append_cmd') have (obviously) no meaning in
this context, so the only properties that are allowed are 'help' and 'required'.

See usage example in examples/Clang.td.

llvm-svn: 51754

llvm-svn: 51753

llvm-svn: 51752

The following is now allowed:

    (case (not_empty "o"), do_something, ...)

This didn't work previously because "-o" is built-in.

llvm-svn: 51751

llvm-svn: 51750