llvm-svn: 45347

When specified, don't split backedges of single-bb loops.
This helps address PR1877

llvm-svn: 45344

llvm-svn: 45343

llvm-svn: 45342

output of nm.

llvm-svn: 45341

providing a misleading facility. It's used once in the MIPS backend
and hardcoded as "\t.globl\t" everywhere else.

llvm-svn: 45338

llvm-svn: 45337

llvm-svn: 45336

llvm-svn: 45335

llvm-svn: 45334

llvm-svn: 45333

llvm-svn: 45327

llvm-svn: 45326

llvm-svn: 45325

llvm-svn: 45324

legalizer support goes in.

llvm-svn: 45323

llvm-svn: 45322

or after legalize.

llvm-svn: 45321

targets.

llvm-svn: 45320

llvm-svn: 45319

llvm-svn: 45318

llvm-svn: 45317

fixes a bug with indirect calls. (Test case will be included with
ocaml collector patch.)

llvm-svn: 45316

llvm-svn: 45315

llvm-svn: 45314

llvm-svn: 45313

llvm-svn: 45312

us to compile:
#include <math.h>
int t1(double d) { return signbit(d); }

into:

_t1:
	movd	%xmm0, %rax
	shrq	$63, %rax
	ret

instead of:

_t1:
	movd	%xmm0, %rax
	shrq	$32, %rax
	shrl	$31, %eax
	ret

on x86-64.

llvm-svn: 45311

llvm-svn: 45310

Remove critical edge breaking.  It won't be necessary as long as we are very careful when inserting copies.

llvm-svn: 45309

llvm-svn: 45307

not merge current bb and succ even if bb's terminator is
unconditional branch to succ.

llvm-svn: 45305

llvm-svn: 45304

llvm-svn: 45300

of this patch is the last line).

llvm-svn: 45289

as on functions.  Make it verify invokes and not just
ordinary calls.  As a (desired) side-effect, it is no
longer legal to have call attributes on arguments that
are being passed to the varargs part of a varargs
function (llvm-as drops them on the floor anyway).

llvm-svn: 45286

return attributes on the floor.  In the case of a call
to a varargs function where the varargs arguments are
being removed, any call attributes on those arguments
need to be dropped.  I didn't do this because I plan to
make it illegal to have such attributes (see next patch).
With this change, compiling the gcc filter2 eh test at -O0
and then running opt -std-compile-opts on it results in
a correctly working program (compiling at -O1 or higher
results in the test failing due to a problem with how we
output eh info into the IR).

llvm-svn: 45285

llvm-svn: 45282

llvm-svn: 45281

llvm-svn: 45280