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[AVR] Re-enable expansion of ADDE/ADDC/SUBE/SUBC in ISel 

This was disabled in r333748, which broke four tests.

In the future, these need to be updated to UADDO/ADDCARRY or
USUBO/SUBCARRY.

llvm-svn: 338212
This commit is contained in:
Dylan McKay 2018-07-29 11:38:36 +00:00
parent ad88a99956
commit 6bc5d5c6db
1 changed files with 7 additions and 0 deletions
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7
llvm/lib/Target/AVR/AVRISelLowering.cpp
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@ -63,6 +63,13 @@ AVRTargetLowering::AVRTargetLowering(AVRTargetMachine &tm)
setTruncStoreAction(MVT::i16, MVT::i8, Expand);
for (MVT VT : MVT::integer_valuetypes()) {
setOperationAction(ISD::ADDC, VT, Legal);
setOperationAction(ISD::SUBC, VT, Legal);
setOperationAction(ISD::ADDE, VT, Legal);
setOperationAction(ISD::SUBE, VT, Legal);
}
// sub (x, imm) gets canonicalized to add (x, -imm), so for illegal types
// revert into a sub since we don't have an add with immediate instruction.
setOperationAction(ISD::ADD, MVT::i32, Custom);