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Unbreak mvi and friends - emit only 'significant' part of the operand

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76041 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Anton Korobeynikov 2009-07-16 14:26:38 +00:00
parent 98db78a28b
commit b6831cb044
2 changed files with 17 additions and 6 deletions
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6
lib/Target/SystemZ/SystemZISelDAGToDAG.cpp
View File

@ -103,6 +103,12 @@ namespace {
return "SystemZ DAG->DAG Pattern Instruction Selection";
}
/// getI8Imm - Return a target constant with the specified value, of type
/// i8.
inline SDValue getI8Imm(uint64_t Imm) {
return CurDAG->getTargetConstant(Imm, MVT::i8);
}
/// getI16Imm - Return a target constant with the specified value, of type
/// i16.
inline SDValue getI16Imm(uint64_t Imm) {

17
lib/Target/SystemZ/SystemZOperands.td
View File

@ -32,6 +32,11 @@ def SYSTEMZ_COND_LE : PatLeaf<(i8 11)>;
def SYSTEMZ_COND_NH : PatLeaf<(i8 12)>;
def SYSTEMZ_COND_NO : PatLeaf<(i8 13)>;
def LO8 : SDNodeXForm<imm, [{
// Transformation function: return low 8 bits.
return getI8Imm(N->getZExtValue() & 0x00000000000000FFULL);
}]>;
def LL16 : SDNodeXForm<imm, [{
// Transformation function: return low 16 bits.
return getI16Imm(N->getZExtValue() & 0x000000000000FFFFULL);
@ -138,14 +143,14 @@ def immSExt16 : PatLeaf<(imm), [{
}
return false;
}]>;
}], LL16>;
def immSExt32 : PatLeaf<(i64 imm), [{
// immSExt32 predicate - true if the immediate fits in a 32-bit sign extended
// field.
uint64_t val = N->getZExtValue();
return ((int64_t)val == (int32_t)val);
}]>;
}], LO32>;
def i64lo32 : PatLeaf<(i64 imm), [{
// i64lo32 predicate - true if the 64-bit immediate has only rightmost 32
@ -173,25 +178,25 @@ def i32immSExt8 : PatLeaf<(i32 imm), [{
// i32immSExt8 predicate - True if the 32-bit immediate fits in a 8-bit
// sign extended field.
return (int32_t)N->getZExtValue() == (int8_t)N->getZExtValue();
}]>;
}], LO8>;
def i32immSExt16 : PatLeaf<(i32 imm), [{
// i32immSExt16 predicate - True if the 32-bit immediate fits in a 16-bit
// sign extended field.
return (int32_t)N->getZExtValue() == (int16_t)N->getZExtValue();
}]>;
}], LL16>;
def i64immSExt32 : PatLeaf<(i64 imm), [{
// i64immSExt32 predicate - True if the 64-bit immediate fits in a 32-bit
// sign extended field.
return (int64_t)N->getZExtValue() == (int32_t)N->getZExtValue();
}]>;
}], LO32>;
def i64immZExt32 : PatLeaf<(i64 imm), [{
// i64immZExt32 predicate - True if the 64-bit immediate fits in a 32-bit
// zero extended field.
return (uint64_t)N->getZExtValue() == (uint32_t)N->getZExtValue();
}]>;
}], LO32>;
// extloads
def extloadi32i8 : PatFrag<(ops node:$ptr), (i32 (extloadi8 node:$ptr))>;