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

llvm-svn: 45278

llvm-svn: 45274

llvm-svn: 45268

OwningPtr except that it works for pointers to arrays.

llvm-svn: 45266

llvm-svn: 45261

llvm-svn: 45260

llvm-svn: 45259

(icmp slt (sub A B) 1) -> (icmp sle A B)
icmp sgt (sub A B) -1) -> (icmp sge A B)

and add testcase.

llvm-svn: 45256

llvm-svn: 45255

llvm-svn: 45254

llvm-svn: 45253

llvm-svn: 45252

Clean up previous patch: PHI uses should not prevent iv reuse if all other uses are addresses. This trades a constant multiply for one fewer iv.

llvm-svn: 45251

has a single use, and generalize it to not require N to be a constant.

llvm-svn: 45250

llvm-svn: 45249

llvm-svn: 45247

llvm-svn: 45246

llvm-svn: 45245

- vec_const.ll: Vector constant loads
- immed64.ll: i64, f64 constant loads

llvm-svn: 45242

llvm-svn: 45238

llvm-svn: 45236

llvm-svn: 45230

llvm-svn: 45229