class I<bits<8> o, Format f, dag ops, string asm, list<dag> pattern>
: X86Inst<o, f, NoImm, ops, asm> {
let Pattern = pattern;
+ let CodeSize = 3;
}
class Ii8 <bits<8> o, Format f, dag ops, string asm, list<dag> pattern>
: X86Inst<o, f, Imm8 , ops, asm> {
let Pattern = pattern;
+ let CodeSize = 3;
}
class Ii16<bits<8> o, Format f, dag ops, string asm, list<dag> pattern>
: X86Inst<o, f, Imm16, ops, asm> {
let Pattern = pattern;
+ let CodeSize = 3;
}
class Ii32<bits<8> o, Format f, dag ops, string asm, list<dag> pattern>
: X86Inst<o, f, Imm32, ops, asm> {
let Pattern = pattern;
+ let CodeSize = 3;
}
//===----------------------------------------------------------------------===//
// unary instructions
+let CodeSize = 2 in {
def NEG8r : I<0xF6, MRM3r, (ops GR8 :$dst, GR8 :$src), "neg{b} $dst",
[(set GR8:$dst, (ineg GR8:$src))]>;
def NEG16r : I<0xF7, MRM3r, (ops GR16:$dst, GR16:$src), "neg{w} $dst",
def NOT32m : I<0xF7, MRM2m, (ops i32mem:$dst), "not{l} $dst",
[(store (not (loadi32 addr:$dst)), addr:$dst)]>;
}
+} // CodeSize
// TODO: inc/dec is slow for P4, but fast for Pentium-M.
+let CodeSize = 2 in
def INC8r : I<0xFE, MRM0r, (ops GR8 :$dst, GR8 :$src), "inc{b} $dst",
[(set GR8:$dst, (add GR8:$src, 1))]>;
-let isConvertibleToThreeAddress = 1 in { // Can transform into LEA.
+let isConvertibleToThreeAddress = 1, CodeSize = 1 in { // Can xform into LEA.
def INC16r : I<0x40, AddRegFrm, (ops GR16:$dst, GR16:$src), "inc{w} $dst",
[(set GR16:$dst, (add GR16:$src, 1))]>, OpSize;
def INC32r : I<0x40, AddRegFrm, (ops GR32:$dst, GR32:$src), "inc{l} $dst",
[(set GR32:$dst, (add GR32:$src, 1))]>;
}
-let isTwoAddress = 0 in {
+let isTwoAddress = 0, CodeSize = 2 in {
def INC8m : I<0xFE, MRM0m, (ops i8mem :$dst), "inc{b} $dst",
[(store (add (loadi8 addr:$dst), 1), addr:$dst)]>;
def INC16m : I<0xFF, MRM0m, (ops i16mem:$dst), "inc{w} $dst",
[(store (add (loadi32 addr:$dst), 1), addr:$dst)]>;
}
+let CodeSize = 2 in
def DEC8r : I<0xFE, MRM1r, (ops GR8 :$dst, GR8 :$src), "dec{b} $dst",
[(set GR8:$dst, (add GR8:$src, -1))]>;
-let isConvertibleToThreeAddress = 1 in { // Can transform into LEA.
+let isConvertibleToThreeAddress = 1, CodeSize = 1 in { // Can xform into LEA.
def DEC16r : I<0x48, AddRegFrm, (ops GR16:$dst, GR16:$src), "dec{w} $dst",
[(set GR16:$dst, (add GR16:$src, -1))]>, OpSize;
def DEC32r : I<0x48, AddRegFrm, (ops GR32:$dst, GR32:$src), "dec{l} $dst",
[(set GR32:$dst, (add GR32:$src, -1))]>;
}
-let isTwoAddress = 0 in {
+let isTwoAddress = 0, CodeSize = 2 in {
def DEC8m : I<0xFE, MRM1m, (ops i8mem :$dst), "dec{b} $dst",
[(store (add (loadi8 addr:$dst), -1), addr:$dst)]>;
def DEC16m : I<0xFF, MRM1m, (ops i16mem:$dst), "dec{w} $dst",