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Implement cast bool to X 

llvm-svn: 5012
This commit is contained in:
Chris Lattner 2002-12-13 11:31:59 +00:00
parent 85b78b7372
commit 0a37046358
1 changed files with 4 additions and 3 deletions
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7
llvm/lib/Target/X86/InstSelectSimple.cpp
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@ -854,7 +854,7 @@ ISel::visitCastInst (CastInst &CI)
// 4) cast {int, uint, ptr} to {short, ushort}
// cast {int, uint, ptr} to {sbyte, ubyte}
// cast {short, ushort} to {sbyte, ubyte}
//
// 1) Implement casts to bool by using compare on the operand followed
// by set if not zero on the result.
if (targetType == Type::BoolTy)
@ -863,10 +863,11 @@ ISel::visitCastInst (CastInst &CI)
BuildMI (BB, X86::SETNEr, 1, destReg);
return;
}
// 2) Implement casts between values of the same type class (as determined
// by getClass) by using a register-to-register move.
unsigned int srcClass = getClass (sourceType);
unsigned int targClass = getClass (targetType);
unsigned srcClass = sourceType == Type::BoolTy ? cByte : getClass(sourceType);
unsigned targClass = getClass (targetType);
static const unsigned regRegMove[] = {
X86::MOVrr8, X86::MOVrr16, X86::MOVrr32
};