llvm-svn: 11078

llvm-svn: 11070

FP_REG_KILL instructions at the end of blocks involved with critical edges.

Fix a bug where FP_REG_KILL instructions weren't inserted in fall through
unconditional branches.  Perhaps this will fix some linscan problems?

llvm-svn: 11019

register so that LiveVariable analysis is not confused.

llvm-svn: 10773

implementation from the TargetMachine directly.

llvm-svn: 10636

llvm-svn: 10632

llvm-svn: 10629

llvm-svn: 10567

llvm-svn: 10563

instruction selector by adding a new pseudo-instruction
FP_REG_KILL. This instruction implicitly defines all x86 fp registers
and is a terminator so that passes which add machine code at the end
of basic blocks (like phi elimination) do not add instructions between
it and the branch or return instruction.

llvm-svn: 10562

llvm-svn: 10170

llvm-svn: 10168

llvm-svn: 10069

llvm-svn: 9903

Implement mul/div/rem constant expressions

llvm-svn: 9424

* Convert tabs to spaces
* Make code fit within 80 columns

llvm-svn: 9416

Header files will be on the way.

llvm-svn: 9298

llvm-svn: 9282

llvm-svn: 9281

* Implement R1 = R2 * C where R1 and R2 are 32 or 16 bits. This avoids an
  extra copy into a register, reducing register pressure.

llvm-svn: 9278

  getelementptr code path for use by other code paths (like malloc and alloca).
* Optimize comparisons with zero
* Generate neg, not, inc, and dec instructions, when possible.

This gives some code size wins, which might translate into performance.  We'll
see tommorow in the nightly tester.

llvm-svn: 9267

This also fixes miscompilation of 176.gcc.

llvm-svn: 9249

llvm-svn: 9224

llvm-svn: 9135

llvm-svn: 9027

llvm-svn: 8871

llvm-svn: 8411

llvm-svn: 8408

until we implement unwinding.
Add support for the invoke instruction, which codegens just like a call with
a branch after it.

The end effect of this change is that programs using the invoke instruction,
but never unwinding, will work fine.  Programs that unwind will abort until
we get unwind support.

llvm-svn: 8187

llvm-svn: 8127

llvm-svn: 7951

llvm-svn: 7823

Physical registers should not float around.

llvm-svn: 7587

llvm-svn: 7558

llvm-svn: 7413

llvm-svn: 7352

llvm-svn: 7344

whether the constant is signed or unsigned, then casting

llvm-svn: 7252

Avoid a fall-through in the (stubby) treatment of the longjmp intrinsic
call which causes llc & lli to core-dump.

Add a sort-of treatment of cast double to ulong. I am not really sure
what a user should expect to see upon casting a negative FP value to
unsigned long long. But with what is given here, I was able to write
a program that could cast -123.456 to ulong and back and get -123.0,
which seems like a step in the right direction.  GCC seems to give you
0. I don't know if I'd consider that useful.

These cases were coming up in GNU coreutils-5.0.

llvm-svn: 7205

try to load or store through a bool*.

llvm-svn: 7195