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[WebAssembly] Set ctlz_zero_undef/cttz_zero_undef to Expand so LegalizeDAG will convert them to ctlz/cttz. Remove the now unneccessary isel patterns. NFC 

llvm-svn: 267264
This commit is contained in:
Craig Topper 2016-04-23 02:49:25 +00:00
parent 70e2766fb4
commit b297b6b0c9
2 changed files with 1 additions and 7 deletions
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2
llvm/lib/Target/WebAssembly/WebAssemblyISelLowering.cpp
View File

@ -97,7 +97,7 @@ WebAssemblyTargetLowering::WebAssemblyTargetLowering(
{ISD::BSWAP, ISD::SMUL_LOHI, ISD::UMUL_LOHI,
ISD::MULHS, ISD::MULHU, ISD::SDIVREM, ISD::UDIVREM, ISD::SHL_PARTS,
ISD::SRA_PARTS, ISD::SRL_PARTS, ISD::ADDC, ISD::ADDE, ISD::SUBC,
ISD::SUBE}) {
ISD::SUBE, ISD::CTLZ_ZERO_UNDEF, ISD::CTTZ_ZERO_UNDEF}) {
setOperationAction(Op, T, Expand);
}
}

6
llvm/lib/Target/WebAssembly/WebAssemblyInstrInteger.td
View File

@ -65,12 +65,6 @@ def EQZ_I64 : I<(outs I32:$dst), (ins I64:$src),
} // Defs = [ARGUMENTS]
// Expand the "don't care" operations to supported operations.
def : Pat<(ctlz_zero_undef I32:$src), (CLZ_I32 I32:$src)>;
def : Pat<(ctlz_zero_undef I64:$src), (CLZ_I64 I64:$src)>;
def : Pat<(cttz_zero_undef I32:$src), (CTZ_I32 I32:$src)>;
def : Pat<(cttz_zero_undef I64:$src), (CTZ_I64 I64:$src)>;
// Optimize away an explicit mask on a rotate count.
def : Pat<(rotl I32:$lhs, (and I32:$rhs, 31)), (ROTL_I32 I32:$lhs, I32:$rhs)>;
def : Pat<(rotr I32:$lhs, (and I32:$rhs, 31)), (ROTR_I32 I32:$lhs, I32:$rhs)>;