ComplexPattern at the root be generated multiple times, once
for each opcode they are part of.  This encourages factoring
because the opcode checks get treated just like everything
else in the matcher.

llvm-svn: 97439

to a scope where every child starts with a CheckOpcode, but
executes more efficiently.  Enhance DAGISelMatcherOpt to 
form it.

This also fixes a bug in CheckOpcode: apparently the SDNodeInfo
objects are not pointer comparable, we have to compare the
enum name.

llvm-svn: 97438

no need to store a type with SymbolRegionValue.

llvm-svn: 97437

llvm-svn: 97436

llvm-svn: 97435

pair.  This encourages MorphNodeTo formation, this gets us 200
more MorphNodeTo's on X86 and shrinks the table a bit.

llvm-svn: 97434

slot they're recording into, no functionality change.

llvm-svn: 97433

so that we get grouping at the top level.

Add an optimization to reorder type check & record nodes
after opcode checks.  We prefer to expose tree shape 
matching which improves grouping and will enhance the next
optimization.

llvm-svn: 97432

dispatcher method.  This eliminates the dependence of the new isel's
generated code on the old isel's predicates, however some random
hand written isel code still uses them.

llvm-svn: 97431

larger unsigned value, since this is implementation-defined
behavior. (We previously suppressed this warning when converting from
a signed value to an unsigned value of the same size).

llvm-svn: 97430

the vtlist for emitnode.

llvm-svn: 97429

warnings in release-assert builds if there were no cases.

llvm-svn: 97428

llvm-svn: 97427

llvm-svn: 97426

(which gets #included into the middle of each 
target's DAGISel class) into a .cpp file where it is
only compiled once.

llvm-svn: 97425

driver and was in fact based on a feature in GCC. =]

llvm-svn: 97424

immediate sizes into the opcode.

llvm-svn: 97423

llvm-svn: 97422

#included into the middle of each isel class) into a real 
header.

llvm-svn: 97421

llvm-svn: 97420

specifies whether there is an output flag or not.  Use this
instead of redundantly encoding the chain/flag results in the
output vtlist.

llvm-svn: 97419

llvm-svn: 97418

case of MorphNodeTo directly.

llvm-svn: 97417

is just a silly wrapper around MorphNodeTo.

llvm-svn: 97416

even some the old isel didn't.  There are several parts of
this that make me feel dirty, but it's no worse than the
old isel.  I'll clean up the parts I can do without ripping
out the old one next.

llvm-svn: 97415

llvm-svn: 97414

llvm-svn: 97413

llvm-svn: 97412

llvm-svn: 97411

llvm-svn: 97409

llvm-svn: 97408

llvm-svn: 97407

llvm-svn: 97406

llvm-svn: 97405

llvm-svn: 97404

an *almost* always incorrect case.  This only does the lookahead
in the insanely unlikely case, so it shouldn't impact performance.

On this testcase:

struct foo {
}
typedef int x;

Before:

t.c:3:9: error: cannot combine with previous 'struct' declaration specifier
typedef int x;
        ^

After:

t.c:2:2: error: expected ';' after struct
}
 ^
 ;

llvm-svn: 97403

When laying out vtables for virtual bases in construction vtables, we need to check if the vtable is a primary base in the layout class.

llvm-svn: 97402

llvm-svn: 97401

evaluation of __builtin_nan*.  Most of the work to make this work is in LLVM.

Fixes <rdar://problem/7696712> and part of PR 5255.

llvm-svn: 97383

APInt.  Be certain to set the integer bit in an x87 extended-precision
significand so that we don't accidentally make a pseudo-NaN.

llvm-svn: 97382