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switch the rest of the x86 immediate patterns over to ImmLeaf,

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simplifying them and exposing more information to tblgen.  It would be nice
if other target authors adopted this as well, particularly arm since it has fastisel.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129676 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2011-04-17 22:12:55 +00:00
parent 7ed1391ff6
commit 5662bc959a
1 changed files with 9 additions and 17 deletions
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26
lib/Target/X86/X86InstrInfo.td
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@ -481,26 +481,18 @@ def X86_COND_O : PatLeaf<(i8 13)>;
def X86_COND_P : PatLeaf<(i8 14)>; // alt. COND_PE
def X86_COND_S : PatLeaf<(i8 15)>;
def immSext8 : PatLeaf<(imm), [{ return immSext8(N); }]>;
def i16immSExt8 : PatLeaf<(i16 immSext8)>;
def i32immSExt8 : PatLeaf<(i32 immSext8)>;
def i64immSExt8 : PatLeaf<(i64 immSext8)>;
def i16immSExt8 : ImmLeaf<i16, [{ return Imm == (char)Imm; }]>;
def i32immSExt8 : ImmLeaf<i32, [{ return Imm == (char)Imm; }]>;
def i64immSExt8 : ImmLeaf<i64, [{ return Imm == (char)Imm; }]>;
def i64immSExt32 : ImmLeaf<i64, [{ return Imm == (int32_t)Imm; }]>;
def i64immSExt32 : ImmLeaf<i64, [{ return Imm == (int32_t)Imm; }]>;
// i64immZExt32 predicate - True if the 64-bit immediate fits in a 32-bit
// unsigned field.
def i64immZExt32 : ImmLeaf<i64, [{ return (uint64_t)Imm == (uint32_t)Imm; }]>;
def i64immZExt32 : PatLeaf<(i64 imm), [{
// i64immZExt32 predicate - True if the 64-bit immediate fits in a 32-bit
// unsignedsign extended field.
return (uint64_t)N->getZExtValue() == (uint32_t)N->getZExtValue();
}]>;
def i64immZExt32SExt8 : PatLeaf<(i64 imm), [{
uint64_t v = N->getZExtValue();
return v == (uint32_t)v && (int32_t)v == (int8_t)v;
def i64immZExt32SExt8 : ImmLeaf<i64, [{
return (uint64_t)Imm == (uint32_t)Imm && (int32_t)Imm == (int8_t)Imm;
}]>;
// Helper fragments for loads.