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MC/X86: Rename alternate spellings of ADD{8,16,32} and mark as "code gen only" so they don't get selected by the asm matcher.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98098 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Daniel Dunbar 2010-03-09 22:50:46 +00:00
parent 1e8ee89c21
commit f291be3159
2 changed files with 14 additions and 9 deletions
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20
lib/Target/X86/X86InstrInfo.td
View File

@ -2647,6 +2647,17 @@ def ADD32rr : I<0x01, MRMDestReg, (outs GR32:$dst),
} // end isConvertibleToThreeAddress
} // end isCommutable
// These are alternate spellings for use by the disassembler, we mark them as
// code gen only to ensure they aren't matched by the assembler.
let isCodeGenOnly = 1 in {
def ADD8rr_alt: I<0x02, MRMSrcReg, (outs GR8:$dst), (ins GR8:$src1, GR8:$src2),
"add{b}\t{$src2, $dst|$dst, $src2}", []>;
def ADD16rr_alt: I<0x03, MRMSrcReg,(outs GR16:$dst),(ins GR16:$src1, GR16:$src2),
"add{w}\t{$src2, $dst|$dst, $src2}", []>, OpSize;
def ADD32rr_alt: I<0x03, MRMSrcReg,(outs GR16:$dst),(ins GR16:$src1, GR16:$src2),
"add{l}\t{$src2, $dst|$dst, $src2}", []>;
}
// Register-Memory Addition
def ADD8rm : I<0x02, MRMSrcMem, (outs GR8 :$dst),
(ins GR8 :$src1, i8mem :$src2),
@ -2664,15 +2675,6 @@ def ADD32rm : I<0x03, MRMSrcMem, (outs GR32:$dst),
[(set GR32:$dst, (add GR32:$src1, (load addr:$src2))),
(implicit EFLAGS)]>;
// Register-Register Addition - Equivalent to the normal rr forms (ADD8rr,
// ADD16rr, and ADD32rr), but differently encoded.
def ADD8mrmrr: I<0x02, MRMSrcReg, (outs GR8:$dst), (ins GR8:$src1, GR8:$src2),
"add{b}\t{$src2, $dst|$dst, $src2}", []>;
def ADD16mrmrr: I<0x03, MRMSrcReg,(outs GR16:$dst),(ins GR16:$src1, GR16:$src2),
"add{w}\t{$src2, $dst|$dst, $src2}", []>, OpSize;
def ADD32mrmrr: I<0x03, MRMSrcReg,(outs GR16:$dst),(ins GR16:$src1, GR16:$src2),
"add{l}\t{$src2, $dst|$dst, $src2}", []>;
// Register-Integer Addition
def ADD8ri : Ii8<0x80, MRM0r, (outs GR8:$dst), (ins GR8:$src1, i8imm:$src2),
"add{b}\t{$src2, $dst|$dst, $src2}",

3
test/MC/AsmParser/X86/x86_32-new-encoder.s
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@ -44,3 +44,6 @@ rdtscp
// CHECK: cmpl %eax, %ebx # encoding: [0x39,0xc3]
cmpl %eax, %ebx
// CHECK: addw %ax, %ax # encoding: [0x66,0x01,0xc0]
addw %ax, %ax