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Add i16 address mode.

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llvm-svn: 35551
This commit is contained in:
Evan Cheng 2007-04-01 08:06:46 +00:00
parent f9dad9ed2f
commit 949a34fbad
1 changed files with 7 additions and 2 deletions
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9
lib/Target/ARM/ARMISelLowering.cpp
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@ -1300,19 +1300,24 @@ bool ARMTargetLowering::isLegalAddressingMode(const AddrMode &AM,
return false;
default:
// FIXME: verify.
switch (getValueType(Ty)) {
default: return false;
case MVT::i1:
case MVT::i8:
// TODO: i16? i64 should be i32, no?
case MVT::i32:
case MVT::i64:
// This assumes i64 is legalized to a pair of i32. If not (i.e.
// ldrd / strd are used, then its address mode is same as i16.
// r + r
if (AM.Scale == 2)
return true;
// r + r << imm
if (!isPowerOf2_32(AM.Scale & ~1))
return false;
case MVT::i16:
// r + r
if (((unsigned)AM.HasBaseReg + AM.Scale) <= 2)
return true;
}
break;
}