Patch by Benjamin Kramer!

llvm-svn: 69976

Fix multiclass inheritance to limit value resolution to new defs added
by base multiclasses.  Do not attempt to alter defs from previous base
multiclasses.  This fixes multiple multiclass inheritance.

llvm-svn: 69974

should be bit-converted to i32, it is sufficient to list only i32 in
subsequent definitions.

llvm-svn: 69973

llvm-svn: 69972

llvm-svn: 69971

very elegant, but neither is the tls specification :-(

llvm-svn: 69968

llvm-svn: 69967

llvm-svn: 69962

true), and casts make me nervous and are verbose anyway, so here's a
ConstantInt::getSigned(Ty, int64_t) method. Just overloading
ConstantInt::get() to take an int64_t too would cause ambiguous
overload errors."

Patch by Jeffrey Yasskin!

llvm-svn: 69958

ISD::VECTOR_SHUFFLE now stores an array of integers representing the shuffle
mask internal to the node, rather than taking a BUILD_VECTOR of ConstantSDNodes
as the shuffle mask.  A value of -1 represents UNDEF.

In addition to eliminating the creation of illegal BUILD_VECTORS just to 
represent shuffle masks, we are better about canonicalizing the shuffle mask,
resulting in substantially better code for some classes of shuffles.

A clean up of x86 shuffle code, and some canonicalizing in DAGCombiner is next.

llvm-svn: 69952

use ISD::EXTRACT_ELEMENT. SelectionDAG has a special fast-path for
the cast of an EXTRACT_ELEMENT with a BUILD_PAIR operand, for the
common case.

llvm-svn: 69948

llvm-svn: 69946

utility function.

llvm-svn: 69937

but this change makes the code more general and easier to adapt for
new purposes.

llvm-svn: 69935

llvm-svn: 69934

Fix a documentation bug.

llvm-svn: 69923

Make BinOps typed and require a type specifier for !nameconcat.  This
allows binops to be used in typed contexts such as when passing
arguments to classes.

llvm-svn: 69921

llvm-svn: 69919

llvm-svn: 69918

work as intended no matter what the default setting of that
option is.

llvm-svn: 69911

llvm-svn: 69901

llvm-svn: 69893

with the persistent insertion point, and change IndVars to make
use of it. This fixes a bug where IndVars was holding on to a
stale insertion point and forcing the SCEVExpander to continue to
use it.

This fixes PR4038.

llvm-svn: 69892

Banksel immediate constant will always immediately follow the GA/ES, so scan an insn from beginnin to find out the banksel operand.

llvm-svn: 69883

whitespace in the same file.

llvm-svn: 69870

llvm-svn: 69868

llvm-svn: 69867

llvm-svn: 69866

llvm-svn: 69865

llvm-svn: 69863

llvm-svn: 69862

memory operand tuples. This doesn't ever come up in normal
code however.

llvm-svn: 69848

llvm-svn: 69847

llvm-svn: 69846

llvm-svn: 69844

llvm-svn: 69842

llvm-svn: 69836

Allow defm to inherit from multiple multiclasses.

llvm-svn: 69832

Implement !nameconcat to concatenate strings and look up the resulting
name in the symbol table, returning an object.

llvm-svn: 69822

llvm-svn: 69818