def OR32mi8 : Ii8<0x83, MRM1m, (outs), (ins i32mem:$dst, i32i8imm:$src),
"or{l}\t{$src, $dst|$dst, $src}",
[(store (or (load addr:$dst), i32immSExt8:$src), addr:$dst)]>;
-}
+} // isTwoAddress = 0
-let isCommutable = 1 in { // X = XOR Y, Z --> X = XOR Z, Y
-def XOR8rr : I<0x30, MRMDestReg,
- (outs GR8 :$dst), (ins GR8 :$src1, GR8 :$src2),
- "xor{b}\t{$src2, $dst|$dst, $src2}",
- [(set GR8:$dst, (xor GR8:$src1, GR8:$src2))]>;
-def XOR16rr : I<0x31, MRMDestReg,
- (outs GR16:$dst), (ins GR16:$src1, GR16:$src2),
- "xor{w}\t{$src2, $dst|$dst, $src2}",
- [(set GR16:$dst, (xor GR16:$src1, GR16:$src2))]>, OpSize;
-def XOR32rr : I<0x31, MRMDestReg,
- (outs GR32:$dst), (ins GR32:$src1, GR32:$src2),
- "xor{l}\t{$src2, $dst|$dst, $src2}",
- [(set GR32:$dst, (xor GR32:$src1, GR32:$src2))]>;
-}
+let isAsCheapAsAMove = 1,
+ isCommutable = 1 in { // X = XOR Y, Z --> X = XOR Z, Y
+ def XOR8rr : I<0x30, MRMDestReg,
+ (outs GR8 :$dst), (ins GR8 :$src1, GR8 :$src2),
+ "xor{b}\t{$src2, $dst|$dst, $src2}",
+ [(set GR8:$dst, (xor GR8:$src1, GR8:$src2))]>;
+ def XOR16rr : I<0x31, MRMDestReg,
+ (outs GR16:$dst), (ins GR16:$src1, GR16:$src2),
+ "xor{w}\t{$src2, $dst|$dst, $src2}",
+ [(set GR16:$dst, (xor GR16:$src1, GR16:$src2))]>, OpSize;
+ def XOR32rr : I<0x31, MRMDestReg,
+ (outs GR32:$dst), (ins GR32:$src1, GR32:$src2),
+ "xor{l}\t{$src2, $dst|$dst, $src2}",
+ [(set GR32:$dst, (xor GR32:$src1, GR32:$src2))]>;
+} // isAsCheapAsAMove = 1, isCommutable = 1
def XOR8rm : I<0x32, MRMSrcMem ,
(outs GR8 :$dst), (ins GR8:$src1, i8mem :$src2),
def XOR16rm : I<0x33, MRMSrcMem ,
(outs GR16:$dst), (ins GR16:$src1, i16mem:$src2),
"xor{w}\t{$src2, $dst|$dst, $src2}",
- [(set GR16:$dst, (xor GR16:$src1, (load addr:$src2)))]>, OpSize;
+ [(set GR16:$dst, (xor GR16:$src1, (load addr:$src2)))]>,
+ OpSize;
def XOR32rm : I<0x33, MRMSrcMem ,
(outs GR32:$dst), (ins GR32:$src1, i32mem:$src2),
"xor{l}\t{$src2, $dst|$dst, $src2}",
[(set GR32:$dst, (xor GR32:$src1, (load addr:$src2)))]>;
-def XOR8ri : Ii8<0x80, MRM6r,
- (outs GR8:$dst), (ins GR8:$src1, i8imm:$src2),
- "xor{b}\t{$src2, $dst|$dst, $src2}",
- [(set GR8:$dst, (xor GR8:$src1, imm:$src2))]>;
-def XOR16ri : Ii16<0x81, MRM6r,
- (outs GR16:$dst), (ins GR16:$src1, i16imm:$src2),
- "xor{w}\t{$src2, $dst|$dst, $src2}",
- [(set GR16:$dst, (xor GR16:$src1, imm:$src2))]>, OpSize;
-def XOR32ri : Ii32<0x81, MRM6r,
- (outs GR32:$dst), (ins GR32:$src1, i32imm:$src2),
- "xor{l}\t{$src2, $dst|$dst, $src2}",
- [(set GR32:$dst, (xor GR32:$src1, imm:$src2))]>;
-def XOR16ri8 : Ii8<0x83, MRM6r,
- (outs GR16:$dst), (ins GR16:$src1, i16i8imm:$src2),
- "xor{w}\t{$src2, $dst|$dst, $src2}",
- [(set GR16:$dst, (xor GR16:$src1, i16immSExt8:$src2))]>,
- OpSize;
-def XOR32ri8 : Ii8<0x83, MRM6r,
- (outs GR32:$dst), (ins GR32:$src1, i32i8imm:$src2),
- "xor{l}\t{$src2, $dst|$dst, $src2}",
- [(set GR32:$dst, (xor GR32:$src1, i32immSExt8:$src2))]>;
+let isAsCheapAsAMove = 1 in {
+ def XOR8ri : Ii8<0x80, MRM6r,
+ (outs GR8:$dst), (ins GR8:$src1, i8imm:$src2),
+ "xor{b}\t{$src2, $dst|$dst, $src2}",
+ [(set GR8:$dst, (xor GR8:$src1, imm:$src2))]>;
+ def XOR16ri : Ii16<0x81, MRM6r,
+ (outs GR16:$dst), (ins GR16:$src1, i16imm:$src2),
+ "xor{w}\t{$src2, $dst|$dst, $src2}",
+ [(set GR16:$dst, (xor GR16:$src1, imm:$src2))]>, OpSize;
+ def XOR32ri : Ii32<0x81, MRM6r,
+ (outs GR32:$dst), (ins GR32:$src1, i32imm:$src2),
+ "xor{l}\t{$src2, $dst|$dst, $src2}",
+ [(set GR32:$dst, (xor GR32:$src1, imm:$src2))]>;
+ def XOR16ri8 : Ii8<0x83, MRM6r,
+ (outs GR16:$dst), (ins GR16:$src1, i16i8imm:$src2),
+ "xor{w}\t{$src2, $dst|$dst, $src2}",
+ [(set GR16:$dst, (xor GR16:$src1, i16immSExt8:$src2))]>,
+ OpSize;
+ def XOR32ri8 : Ii8<0x83, MRM6r,
+ (outs GR32:$dst), (ins GR32:$src1, i32i8imm:$src2),
+ "xor{l}\t{$src2, $dst|$dst, $src2}",
+ [(set GR32:$dst, (xor GR32:$src1, i32immSExt8:$src2))]>;
+} // isAsCheapAsAMove = 1
+
let isTwoAddress = 0 in {
def XOR8mr : I<0x30, MRMDestMem,
(outs), (ins i8mem :$dst, GR8 :$src),
(outs), (ins i32mem:$dst, i32i8imm :$src),
"xor{l}\t{$src, $dst|$dst, $src}",
[(store (xor (load addr:$dst), i32immSExt8:$src), addr:$dst)]>;
-}
+} // isTwoAddress = 0
} // Defs = [EFLAGS]
// Shift instructions
def SHL32rCL : I<0xD3, MRM4r, (outs GR32:$dst), (ins GR32:$src),
"shl{l}\t{%cl, $dst|$dst, %CL}",
[(set GR32:$dst, (shl GR32:$src, CL))]>;
-}
+} // Uses = [CL]
def SHL8ri : Ii8<0xC0, MRM4r, (outs GR8 :$dst), (ins GR8 :$src1, i8imm:$src2),
"shl{b}\t{$src2, $dst|$dst, $src2}",
[(set GR32:$dst, (shl GR32:$src1, (i8 imm:$src2)))]>;
// NOTE: We don't use shifts of a register by one, because 'add reg,reg' is
// cheaper.
-}
+} // isConvertibleToThreeAddress = 1
let isTwoAddress = 0 in {
let Uses = [CL] in {
// Alias instructions that map movr0 to xor.
// FIXME: remove when we can teach regalloc that xor reg, reg is ok.
-let Defs = [EFLAGS], isReMaterializable = 1 in {
+let Defs = [EFLAGS], isReMaterializable = 1, isAsCheapAsAMove = 1 in {
def MOV8r0 : I<0x30, MRMInitReg, (outs GR8 :$dst), (ins),
"xor{b}\t$dst, $dst",
[(set GR8:$dst, 0)]>;