llvm-svn: 24296

uniquing id.  This makes things happy when the function name is quoted,
preventing labels like LBB"foo"_2.

llvm-svn: 24295

llvm-svn: 24294

names.  This also changes the default to allow all of "$_." in addition
to letters and numbers as symbol names.  If you don't want this, use
markCharUnacceptable to remove one of these or markCharAcceptable to add
to the set.  This corresponds with what GAS accepts by default.

Also, this includes some minor speedups

llvm-svn: 24293

llvm-svn: 24292

llvm-svn: 24288

test/Regression/CodeGen/PowerPC/darwin-labels.ll

llvm-svn: 24287

llvm-svn: 24283

llvm-svn: 24281

llvm-svn: 24279

llvm-svn: 24278

Do not mangle internal global names that do not collide with anything.

This gives us strings that now look like this:

__2E_str_1:                             ; '.str_1'
        .asciz  "foo"

instead of this:

l1__2E_str_1:                           ; '.str_1'
        .asciz  "foo"

llvm-svn: 24277

llvm-svn: 24275

llvm-svn: 24274

l1__2E_str_1:                           ; '.str_1'
        .asciz  "foo"

not:

        .align  0
l1__2E_str_1:                           ; '.str_1'
        .asciz  "foo"

llvm-svn: 24273

add support for .asciz, and enable it by default.  If your target assemblerdoesn't support .asciz, just set AscizDirective to null in your asmprinter.
This compiles C strings to:

l1__2E_str_1:                           ; '.str_1'
        .asciz  "foo"

instead of:

l1__2E_str_1:                           ; '.str_1'
        .ascii  "foo\000"

llvm-svn: 24272

llvm-svn: 24270

llvm-svn: 24269

Reg2Mem

for fun you can opt -reg2mem -mem2reg

llvm-svn: 24267

llvm-svn: 24265

llvm-svn: 24264

Switch the allnodes list from a vector of pointers to an ilist of nodes.This eliminates the vector, allows constant time removal of a node froma graph, and makes iteration over the all nodes list stable when adding
nodes to the graph.

llvm-svn: 24263

llvm-svn: 24261

llvm-svn: 24260

llvm-svn: 24259

llvm-svn: 24258

llvm-svn: 24256

allocator from 23s to 11s on kc++ in debug mode.

llvm-svn: 24255

eliminates almost one node per block in common cases.

llvm-svn: 24254

turn power-of-two multiplies into shifts early to improve compile time.

llvm-svn: 24253

llvm-svn: 24252

Change the ValueList array for each node to be shared instead of individuallyallocated.  Further, in the common case where a node has a single value, justreference an element from a small array.  This is a small compile-time win.

llvm-svn: 24251

Switch the operandlist/valuelist from being vectors to being just an array.This saves 12 bytes from SDNode, but doesn't speed things up substantially
(our graphs apparently already fit within the cache on my g5).  In any case
this reduces memory usage.

llvm-svn: 24249

llvm-svn: 24247

set and eliminating the need to iterate whenever something is removed (which
can be really slow in some cases).  Thx to Jim for pointing out something silly
I was getting stuck on. :)

llvm-svn: 24241

not spending tons of time microoptimizing it.  This is useful for an -O0
style of build.

llvm-svn: 24235

Add a new option to indicate we want the code generator to emit code quickly,not spending tons of time microoptimizing it.  This is useful for an -O0style of build.

llvm-svn: 24233

llvm-svn: 24231

llvm-svn: 24228

llvm-svn: 24227