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XOR32rr, etc. are not AsCheapAsMove, but MOV32ri, etc. are.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52454 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2008-06-18 08:13:07 +00:00
parent 8b0fcf38ef
commit 359e9371b9
1 changed files with 3 additions and 4 deletions
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7
lib/Target/X86/X86InstrInfo.td
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@ -578,7 +578,7 @@ def MOV16rr : I<0x89, MRMDestReg, (outs GR16:$dst), (ins GR16:$src),
def MOV32rr : I<0x89, MRMDestReg, (outs GR32:$dst), (ins GR32:$src),
"mov{l}\t{$src, $dst|$dst, $src}", []>;
}
let isReMaterializable = 1 in {
let isReMaterializable = 1, isAsCheapAsAMove = 1 in {
def MOV8ri : Ii8 <0xB0, AddRegFrm, (outs GR8 :$dst), (ins i8imm :$src),
"mov{b}\t{$src, $dst|$dst, $src}",
[(set GR8:$dst, imm:$src)]>;
@ -1312,8 +1312,7 @@ let isTwoAddress = 0 in {
} // isTwoAddress = 0
let isAsCheapAsAMove = 1,
isCommutable = 1 in { // X = XOR Y, Z --> X = XOR Z, Y
let isCommutable = 1 in { // X = XOR Y, Z --> X = XOR Z, Y
def XOR8rr : I<0x30, MRMDestReg,
(outs GR8 :$dst), (ins GR8 :$src1, GR8 :$src2),
"xor{b}\t{$src2, $dst|$dst, $src2}",
@ -1326,7 +1325,7 @@ let isAsCheapAsAMove = 1,
(outs GR32:$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
} // isCommutable = 1
def XOR8rm : I<0x32, MRMSrcMem ,
(outs GR8 :$dst), (ins GR8:$src1, i8mem :$src2),