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[Lanai] Set CTLZ_ZERO_UNDEF/CTTZ_ZERO_UNDEF to Expand instead of Legal so they will be converted to CTLZ/CTTZ by LegalizeDAG. Remove extra instructions that only existed to to contain patterns that match the zero_undef operations. NFC

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llvm-svn: 267108
This commit is contained in:
Craig Topper 2016-04-22 05:13:01 +00:00
parent 07012bab8b
commit 9b0556c083
2 changed files with 2 additions and 11 deletions
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4
lib/Target/Lanai/LanaiISelLowering.cpp
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@ -111,9 +111,9 @@ LanaiTargetLowering::LanaiTargetLowering(const TargetMachine &TM,
setOperationAction(ISD::BSWAP, MVT::i32, Expand);
setOperationAction(ISD::CTPOP, MVT::i32, Legal);
setOperationAction(ISD::CTLZ, MVT::i32, Legal);
setOperationAction(ISD::CTLZ_ZERO_UNDEF, MVT::i32, Legal);
setOperationAction(ISD::CTLZ_ZERO_UNDEF, MVT::i32, Expand);
setOperationAction(ISD::CTTZ, MVT::i32, Legal);
setOperationAction(ISD::CTTZ_ZERO_UNDEF, MVT::i32, Legal);
setOperationAction(ISD::CTTZ_ZERO_UNDEF, MVT::i32, Expand);
setOperationAction(ISD::SIGN_EXTEND_INREG, MVT::i1, Expand);
setOperationAction(ISD::SIGN_EXTEND_INREG, MVT::i8, Expand);

9
lib/Target/Lanai/LanaiInstrInfo.td
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@ -823,20 +823,11 @@ def POPC: InstSpecial<0b001, (outs GPR:$Rd), (ins GPR:$Rs1),
// Count Leading Zeros (LEADZ)
def LEADZ: InstSpecial<0b010, (outs GPR:$Rd), (ins GPR:$Rs1),
"leadz\t$Rs1, $Rd", [(set GPR:$Rd, (ctlz GPR:$Rs1))]>;
let isCodeGenOnly = 1 in
def LEADZUNDEF: InstSpecial<0b010, (outs GPR:$Rd), (ins GPR:$Rs1),
"leadz\t$Rs1, $Rd",
[(set GPR:$Rd, (ctlz_zero_undef GPR:$Rs1))]>;
// Count Trailing Zeros (TRAILZ)
def TRAILZ : InstSpecial<0b011, (outs GPR:$Rd), (ins GPR:$Rs1),
"trailz\t$Rs1, $Rd",
[(set GPR:$Rd, (cttz GPR:$Rs1))]>;
let isCodeGenOnly = 1 in
def TRAILZUNDEF : InstSpecial<0b011, (outs GPR:$Rd), (ins GPR:$Rs1),
"trailz\t$Rs1, $Rd",
[(set GPR:$Rd,
(cttz_zero_undef GPR:$Rs1))]>;
}
//===----------------------------------------------------------------------===//