delete some dead ones.

llvm-svn: 32694

llvm-svn: 32693

llvm-svn: 32692

converted, we lose a static initializer.  This also allows GCC to emit warnings
about unused statistics.

llvm-svn: 32690

creation. These changes are still temporary but at least this pushes
knowledge of signedness out closer to where it can be determined properly
and allows signedness to be removed from VMCore.

llvm-svn: 32654

form so we can remove that method from ConstantExpr.

llvm-svn: 32652

rework the hacks that had us passing OStream in. We pass in std::ostream*
instead, check for null, and then dispatch to the correct print() method.

llvm-svn: 32636

zero arg vararg functions, pass undef instead of 'int 0', which is cheaper.

llvm-svn: 32634

llvm-svn: 32595

used to determine whether a ZExt or SExt cast is performed. Instead, pass
an "isSigned" bool to the function and determine its value from the opcode
of the cast involved.
Also, clean up some cruft from previous patches.

llvm-svn: 32548

cast instructions. A few are bug fixes.

llvm-svn: 32544

make sure to also check that it is a zext from bool, not any other cast
operation type.

llvm-svn: 32539

The cast patch introduced the possibility that the wrong cast opcode
could be used and that this transform could trigger on different kinds
of cast operations. This patch rectifies that.

llvm-svn: 32538

so the decision of which opcode to use is pushed upward to the caller.
Adjust the callers to pass the expected opcode.

llvm-svn: 32535

llvm-svn: 32534

obscure bugs affecting the X86 code generator.  I will reenable this
when fixed.

llvm-svn: 32524

creation calls.

llvm-svn: 32521

Rename getZeroExtend and getSignExtend to getZExt and getSExt to match
the the casting mnemonics in the rest of LLVM.

llvm-svn: 32514

llvm-svn: 32487

llvm-svn: 32486

llvm-svn: 32479

llvm-svn: 32477

llvm-svn: 32469

llvm-svn: 32468

llvm-svn: 32426

This implements Transforms/ScalarRepl/union-packed.ll

llvm-svn: 32422

 * Add support for promoting unions with fp values in them.  This produces
   our new int<->fp bitcast instructions, implementing
   Transforms/ScalarRepl/union-fp-int.ll

As an example, this allows us to compile this:

union intfloat { int i; float f; };
float invsqrt(const float arg_x) {
    union intfloat x = { .f = arg_x };
    const float xhalf = arg_x * 0.5f;
    x.i = 0x5f3759df - (x.i >> 1);
    return x.f * (1.5f - xhalf * x.f * x.f);
}

into:

_invsqrt:
        movss 4(%esp), %xmm0
        movd %xmm0, %eax
        sarl %eax
        movl $1597463007, %ecx
        subl %eax, %ecx
        movd %ecx, %xmm1
        mulss LCPI1_0, %xmm0
        mulss %xmm1, %xmm0
        movss LCPI1_1, %xmm2
        mulss %xmm1, %xmm0
        subss %xmm0, %xmm2
        movl 8(%esp), %eax
        mulss %xmm2, %xmm1
        movss %xmm1, (%eax)
        ret

instead of:

_invsqrt:
        subl $4, %esp
        movss 8(%esp), %xmm0
        movss %xmm0, (%esp)
        movl (%esp), %eax
        movl $1597463007, %ecx
        sarl %eax
        subl %eax, %ecx
        movl %ecx, (%esp)
        mulss LCPI1_0, %xmm0
        movss (%esp), %xmm1
        mulss %xmm1, %xmm0
        mulss %xmm1, %xmm0
        movss LCPI1_1, %xmm2
        subss %xmm0, %xmm2
        mulss %xmm2, %xmm1
        movl 12(%esp), %eax
        movss %xmm1, (%eax)
        addl $4, %esp
        ret

llvm-svn: 32418

MarkAliveBlocks.

llvm-svn: 32375

llvm-svn: 32333

llvm-svn: 32320

now cerr, cout, and NullStream resp.

llvm-svn: 32298

llvm-svn: 32288

llvm-svn: 32280

is 'unsigned'.

llvm-svn: 32279

passing false would make the asmprinter fail anyway.

llvm-svn: 32264

llvm-svn: 32252

7.48s.  This regression is due to unforseen consequences of the cast patch.

llvm-svn: 32209

for now.

llvm-svn: 32208

llvm-svn: 32166

llvm-svn: 32113