6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2026-04-26 12:20:42 +00:00
Code Issues Projects Releases Wiki Activity

add a new OPC_SwitchOpcode which is semantically equivalent

Browse Source 
to a scope where every child starts with a CheckOpcode, but
executes more efficiently.  Enhance DAGISelMatcherOpt to 
form it.

This also fixes a bug in CheckOpcode: apparently the SDNodeInfo
objects are not pointer comparable, we have to compare the
enum name.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97438 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2010-03-01 06:59:22 +00:00
parent c99b5a25bb
commit eb66921adb
6 changed files with 180 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files
utils/TableGen/DAGISelMatcher.cpp
+21 -1
View File
@@ -88,6 +88,16 @@ void CheckOpcodeMatcher::printImpl(raw_ostream &OS, unsigned indent) const {
OS.indent(indent) << "CheckOpcode " << Opcode.getEnumName() << '\n';
}
void SwitchOpcodeMatcher::printImpl(raw_ostream &OS, unsigned indent) const {
OS.indent(indent) << "SwitchOpcode: {\n";
for (unsigned i = 0, e = Cases.size(); i != e; ++i) {
OS.indent(indent) << "case " << Cases[i].first->getEnumName() << ":\n";
Cases[i].second->print(OS, indent+2);
}
OS.indent(indent) << "}\n";
}
void CheckMultiOpcodeMatcher::printImpl(raw_ostream &OS, unsigned indent) const{
OS.indent(indent) << "CheckMultiOpcode <todo args>\n";
}
@@ -242,6 +252,14 @@ unsigned EmitMergeInputChainsMatcher::getHashImpl() const {
return HashUnsigneds(ChainNodes.begin(), ChainNodes.end());
}
bool CheckOpcodeMatcher::isEqualImpl(const Matcher *M) const {
// Note: pointer equality isn't enough here, we have to check the enum names
// to ensure that the nodes are for the same opcode.
return cast<CheckOpcodeMatcher>(M)->Opcode.getEnumName() ==
Opcode.getEnumName();
}
bool EmitNodeMatcherCommon::isEqualImpl(const Matcher *m) const {
const EmitNodeMatcherCommon *M = cast<EmitNodeMatcherCommon>(m);
return M->OpcodeName == OpcodeName && M->VTs == VTs &&
@@ -288,7 +306,9 @@ static bool TypesAreContradictory(MVT::SimpleValueType T1,
bool CheckOpcodeMatcher::isContradictoryImpl(const Matcher *M) const {
if (const CheckOpcodeMatcher *COM = dyn_cast<CheckOpcodeMatcher>(M)) {
// One node can't have two different opcodes!
return &COM->getOpcode() != &getOpcode();
// Note: pointer equality isn't enough here, we have to check the enum names
// to ensure that the nodes are for the same opcode.
return COM->getOpcode().getEnumName() != getOpcode().getEnumName();
}
// TODO: CheckMultiOpcodeMatcher?