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Don't mark CMOV_GR8 as two-address, or commutable, since it's a pseudo. 

llvm-svn: 80271
This commit is contained in:
Dan Gohman 2009-08-27 18:16:24 +00:00
parent ed10d7c441
commit 931ec72ebf
1 changed files with 2 additions and 2 deletions
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4
llvm/lib/Target/X86/X86InstrInfo.td
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@ -1034,19 +1034,19 @@ let isTwoAddress = 1 in {
// Conditional moves // Conditional moves
let Uses = [EFLAGS] in { let Uses = [EFLAGS] in {
let isCommutable = 1 in {
// X86 doesn't have 8-bit conditional moves. Use a customDAGSchedInserter to // X86 doesn't have 8-bit conditional moves. Use a customDAGSchedInserter to
// emit control flow. An alternative to this is to mark i8 SELECT as Promote, // emit control flow. An alternative to this is to mark i8 SELECT as Promote,
// however that requires promoting the operands, and can induce additional // however that requires promoting the operands, and can induce additional
// i8 register pressure. // i8 register pressure.
let usesCustomDAGSchedInserter = 1 in let usesCustomDAGSchedInserter = 1, isTwoAddress = 0 in
def CMOV_GR8 : I<0, Pseudo, def CMOV_GR8 : I<0, Pseudo,
(outs GR8:$dst), (ins GR8:$src1, GR8:$src2, i8imm:$cond), (outs GR8:$dst), (ins GR8:$src1, GR8:$src2, i8imm:$cond),
"#CMOV_GR8 PSEUDO!", "#CMOV_GR8 PSEUDO!",
[(set GR8:$dst, (X86cmov GR8:$src1, GR8:$src2, [(set GR8:$dst, (X86cmov GR8:$src1, GR8:$src2,
imm:$cond, EFLAGS))]>; imm:$cond, EFLAGS))]>;
let isCommutable = 1 in {
def CMOVB16rr : I<0x42, MRMSrcReg, // if <u, GR16 = GR16 def CMOVB16rr : I<0x42, MRMSrcReg, // if <u, GR16 = GR16
(outs GR16:$dst), (ins GR16:$src1, GR16:$src2), (outs GR16:$dst), (ins GR16:$src1, GR16:$src2),
"cmovb\t{$src2, $dst|$dst, $src2}", "cmovb\t{$src2, $dst|$dst, $src2}",