When looking at getelementptr instructions, make sure to use a forwarded
type.  We want to do this because a DerivedType may drop its uses and then
refine its users, who may then use another user who hasn't been refined yet.
By getting the forwarded type, we always ensure that we're looking at a
Type that isn't in a halfway refined state.

Now, I should be able to put this stuff in PATypeHandle, but it doesn't work
for some reason.  This should do for now.

llvm-svn: 13386

llvm-svn: 13385

llvm-svn: 13384

llvm-svn: 13383

workaround, use the C HUGE_VAL macro instead.

llvm-svn: 13377

llvm-svn: 13370

the debugging functions that call "dot". These fixed settings have
various problems: for example, the fixed size that is set in the graph
traits classes is not appropriate for turning the dot file into a PNG,
and if TrueType font rendering is being used, the 'Courier' TrueType font
may not be installed. It seems easy enough to specify these things on the
command line, anyhow.

llvm-svn: 13366

llvm-svn: 13364

llvm-svn: 13363

llvm-svn: 13362

llvm-svn: 13360

llvm-svn: 13359

This is intended to address Bug 40.

llvm-svn: 13358

constant pool member's name.
This is intended to address Bug 333.

Also, fix an anachronistic usage of "M" as a parameter of type Function *.

llvm-svn: 13357

fills in a ToolArgs vector in the AbstractInterpreter if it is set. This
ToolArgs vector is used to pass additional arguments to LLI and/or LLC.
This is intended to address Bug 40.

Also, make -debug-only=toolrunner work for the LLC and CBE
AbstractInterpreters.

llvm-svn: 13356

llvm-svn: 13355

div:
        mov %EDX, DWORD PTR [%ESP + 4]
        mov %ECX, 64
        mov %EAX, %EDX
        sar %EDX, 31
        idiv %ECX
        ret

to this:

div:
        mov %EAX, DWORD PTR [%ESP + 4]
        mov %ECX, %EAX
        sar %ECX, 5
        shr %ECX, 26
        mov %EDX, %EAX
        add %EDX, %ECX
        sar %EAX, 6
        ret

Note that the intel compiler is currently making this:

div:
        movl      4(%esp), %edx                                 #3.5
        movl      %edx, %eax                                    #4.14
        sarl      $5, %eax                                      #4.14
        shrl      $26, %eax                                     #4.14
        addl      %edx, %eax                                    #4.14
        sarl      $6, %eax                                      #4.14
        ret                                                     #4.14

Which has one less register->register copy.  (hint hint alkis :)

llvm-svn: 13354

llvm-svn: 13353

llvm-svn: 13352

llvm-svn: 13351

llvm-svn: 13350

This fixes PR332 and ADCE/2004-05-04-UnreachableBlock.llx

llvm-svn: 13349

llvm-svn: 13348

libraries and the C runtime support library

llvm-svn: 13347

llvm-svn: 13346

Add a documentation comment for write_profiling_data().

llvm-svn: 13345

llvm-svn: 13344

Edited comments.

llvm-svn: 13343

llvm-svn: 13342

llvm-svn: 13341

llvm-svn: 13340

llvm-svn: 13339

llvm-svn: 13338

llvm-svn: 13337

which case you'll get a null array and zero passed to the profiling function.

llvm-svn: 13336

llvm-svn: 13335

llvm-svn: 13319

acting like a normal pass.  :(

llvm-svn: 13318

llvm-svn: 13317

llvm-svn: 13316