memuse at the end, thus it is signed.

llvm-svn: 19904

llvm-svn: 19903

llvm-svn: 19902

llvm-svn: 19901

llvm-svn: 19900

llvm-svn: 19899

llvm-svn: 19898

llvm-svn: 19897

Adjust TmpInstruction to work with the new User model.

llvm-svn: 19896

llvm-svn: 19895

llvm-svn: 19894

llvm-svn: 19893

llvm-svn: 19892

Adjust to changes in the User class, operand handling is very different.
PHI node and switch statements must handle explicit resizing of operand
lists.

llvm-svn: 19891

manage their operands.

llvm-svn: 19890

llvm-svn: 19889

llvm-svn: 19888

class.

llvm-svn: 19887

llvm-svn: 19886

directly embed their operands.

llvm-svn: 19885

llvm-svn: 19884

and num operands in the User class.  this allows us to embed the operands
directly in the subclasses if possible.  For example, for binary operators
we store the two operands in the derived class.

The has several effects:
  1. it improves locality because the operands and instruction are together
  2. it makes accesses to operands faster (one less load) if you access them
     through the derived class pointer.  For example this:

Value *GetBinaryOperatorOp(BinaryOperator *I, int i) {
  return I->getOperand(i);
}

Was compiled to:

_Z19GetBinaryOperatorOpPN4llvm14BinaryOperatorEi:
        movl    4(%esp), %edx
        movl    8(%esp), %eax
        sall    $4, %eax
        movl    24(%edx), %ecx
        addl    %ecx, %eax
        movl    (%eax), %eax
        ret

and is now compiled to:

_Z19GetBinaryOperatorOpPN4llvm14BinaryOperatorEi:
        movl    8(%esp), %eax
        movl    4(%esp), %edx
        sall    $4, %eax
        addl    %edx, %eax
        movl    44(%eax), %eax
        ret

Accesses through "Instruction*" are unmodified.

   3. This reduces memory consumption (by about 3%) by eliminating 1 word of
      vector overhead and a malloc header on a seperate object.
   4. This speeds up gccas about 10% (both debug and release builds) on
      large things (such as 176.gcc).  For example, it takes a debug build
      from 172.9 -> 155.6s and a release gccas from 67.7 -> 61.8s

llvm-svn: 19883

llvm-svn: 19882

llvm-svn: 19881

llvm-svn: 19880

truncated, e.g. (truncate:i8 something:i16) on a 32 or 64-bit RISC.

llvm-svn: 19879

llvm-svn: 19878

Patch contributed by Vladimer Merzliakov.

llvm-svn: 19877

llvm-svn: 19876

* Properly compile this:

struct a {};
int test() {
  struct a b[2];
  if (&b[0] != &b[1])
    abort ();
  return 0;
}

to 'return 0', not abort().

llvm-svn: 19875

not change the address.

llvm-svn: 19874

llvm-svn: 19873

llvm-svn: 19872

closed the file.  This unbreaks the build.

llvm-svn: 19871

llvm-svn: 19870

llvm-svn: 19869

llvm-svn: 19868

llvm-svn: 19867

legalized, and actually return the correct result when we legalize the chain first.

llvm-svn: 19866

llvm-svn: 19865