6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-07-29 10:25:12 +00:00
Code Issues Projects Releases Wiki Activity

Use std::bitset for SubtargetFeatures

Browse Source 
Previously, subtarget features were a bitfield with the underlying type being uint64_t. 
Since several targets (X86 and ARM, in particular) have hit or were very close to hitting this bound, switching the features to use a bitset.
No functional change.

The first time this was committed (r229831), it caused several buildbot failures. 
At least some of the ARM ones were due to gcc/binutils issues, and should now be fixed.

Differential Revision: http://reviews.llvm.org/D8542

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@233055 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Michael Kuperstein
2015-03-24 09:17:25 +00:00
parent 1828be87da
commit d3ab717935
33 changed files with 348 additions and 308 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
utils/TableGen/FixedLenDecoderEmitter.cpp
View File

@@ -848,7 +848,7 @@ emitPredicateFunction(formatted_raw_ostream &OS, PredicateSet &Predicates,
// The predicate function is just a big switch statement based on the
// input predicate index.
OS.indent(Indentation) << "static bool checkDecoderPredicate(unsigned Idx, "
<< "uint64_t Bits) {\n";
<< "const FeatureBitset& Bits) {\n";
Indentation += 2;
if (!Predicates.empty()) {
OS.indent(Indentation) << "switch (Idx) {\n";
@@ -1102,10 +1102,10 @@ unsigned FilterChooser::getDecoderIndex(DecoderSet &Decoders,
static void emitSinglePredicateMatch(raw_ostream &o, StringRef str,
const std::string &PredicateNamespace) {
if (str[0] == '!')
o << "!(Bits & " << PredicateNamespace << "::"
<< str.slice(1,str.size()) << ")";
o << "!Bits[" << PredicateNamespace << "::"
<< str.slice(1,str.size()) << "]";
else
o << "(Bits & " << PredicateNamespace << "::" << str << ")";
o << "Bits[" << PredicateNamespace << "::" << str << "]";
}
bool FilterChooser::emitPredicateMatch(raw_ostream &o, unsigned &Indentation,
@@ -2010,7 +2010,7 @@ static void emitDecodeInstruction(formatted_raw_ostream &OS) {
<< " InsnType insn, uint64_t Address,\n"
<< " const void *DisAsm,\n"
<< " const MCSubtargetInfo &STI) {\n"
<< " uint64_t Bits = STI.getFeatureBits();\n"
<< " const FeatureBitset& Bits = STI.getFeatureBits();\n"
<< "\n"
<< " const uint8_t *Ptr = DecodeTable;\n"
<< " uint32_t CurFieldValue = 0;\n"