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Add FIXME for operand promotion. 

llvm-svn: 99859
This commit is contained in:
Eric Christopher 2010-03-30 01:04:59 +00:00
parent dbb8cd1d34
commit c1ddaaf5b1
1 changed files with 4 additions and 0 deletions
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4
llvm/lib/Target/X86/X86ISelLowering.cpp
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@ -794,6 +794,9 @@ X86TargetLowering::X86TargetLowering(X86TargetMachine &TM)
} }
// Promote v16i8, v8i16, v4i32 load, select, and, or, xor to v2i64. // Promote v16i8, v8i16, v4i32 load, select, and, or, xor to v2i64.
// FIXME: This produces lots of inefficiencies in isel since
// we then need notice that most of our operands have been implicitly
// converted to v2i64.
for (unsigned i = (unsigned)MVT::v16i8; i != (unsigned)MVT::v2i64; i++) { for (unsigned i = (unsigned)MVT::v16i8; i != (unsigned)MVT::v2i64; i++) {
MVT::SimpleValueType SVT = (MVT::SimpleValueType)i; MVT::SimpleValueType SVT = (MVT::SimpleValueType)i;
EVT VT = SVT; EVT VT = SVT;
@ -802,6 +805,7 @@ X86TargetLowering::X86TargetLowering(X86TargetMachine &TM)
if (!VT.is128BitVector()) { if (!VT.is128BitVector()) {
continue; continue;
} }
setOperationAction(ISD::AND, SVT, Promote); setOperationAction(ISD::AND, SVT, Promote);
AddPromotedToType (ISD::AND, SVT, MVT::v2i64); AddPromotedToType (ISD::AND, SVT, MVT::v2i64);
setOperationAction(ISD::OR, SVT, Promote); setOperationAction(ISD::OR, SVT, Promote);