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emit to the right streams, to avoid emitting the push

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body before the push.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96726 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2010-02-21 06:30:04 +00:00
parent 0ab1c5f8f8
commit 984e18823e
1 changed files with 16 additions and 15 deletions
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31
utils/TableGen/DAGISelMatcherEmitter.cpp
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@ -68,8 +68,6 @@ static unsigned EmitInt(int64_t Val, formatted_raw_ostream &OS) {
namespace {
class MatcherTableEmitter {
formatted_raw_ostream &OS;
StringMap<unsigned> NodePredicateMap, PatternPredicateMap;
std::vector<std::string> NodePredicates, PatternPredicates;
@ -81,13 +79,15 @@ class MatcherTableEmitter {
std::vector<const Record*> NodeXForms;
public:
MatcherTableEmitter(formatted_raw_ostream &os) : OS(os) {}
MatcherTableEmitter() {}
unsigned EmitMatcherList(const MatcherNode *N, unsigned Indent);
unsigned EmitMatcherList(const MatcherNode *N, unsigned Indent,
formatted_raw_ostream &OS);
void EmitPredicateFunctions();
void EmitPredicateFunctions(formatted_raw_ostream &OS);
private:
unsigned EmitMatcher(const MatcherNode *N, unsigned Indent);
unsigned EmitMatcher(const MatcherNode *N, unsigned Indent,
formatted_raw_ostream &OS);
unsigned getNodePredicate(StringRef PredName) {
unsigned &Entry = NodePredicateMap[PredName];
@ -130,7 +130,7 @@ private:
/// EmitMatcherOpcodes - Emit bytes for the specified matcher and return
/// the number of bytes emitted.
unsigned MatcherTableEmitter::
EmitMatcher(const MatcherNode *N, unsigned Indent) {
EmitMatcher(const MatcherNode *N, unsigned Indent, formatted_raw_ostream &OS) {
OS.PadToColumn(Indent*2);
switch (N->getKind()) {
@ -315,7 +315,7 @@ EmitMatcher(const MatcherNode *N, unsigned Indent) {
<< *CM->getPattern().getSrcPattern() << '\n';
OS.PadToColumn(Indent*2) << "// Dst: "
<< *CM->getPattern().getDstPattern() << '\n';
return 0;
return 2+CM->getNumResults();
}
}
assert(0 && "Unreachable");
@ -324,7 +324,8 @@ EmitMatcher(const MatcherNode *N, unsigned Indent) {
/// EmitMatcherList - Emit the bytes for the specified matcher subtree.
unsigned MatcherTableEmitter::
EmitMatcherList(const MatcherNode *N, unsigned Indent) {
EmitMatcherList(const MatcherNode *N, unsigned Indent,
formatted_raw_ostream &OS) {
unsigned Size = 0;
while (N) {
// Push is a special case since it is binary.
@ -338,7 +339,7 @@ EmitMatcherList(const MatcherNode *N, unsigned Indent) {
raw_svector_ostream OS(TmpBuf);
formatted_raw_ostream FOS(OS);
NextSize = EmitMatcherList(cast<PushMatcherNode>(N)->getNext(),
Indent+1);
Indent+1, FOS);
}
if (NextSize > 255) {
@ -357,7 +358,7 @@ EmitMatcherList(const MatcherNode *N, unsigned Indent) {
continue;
}
Size += EmitMatcher(N, Indent);
Size += EmitMatcher(N, Indent, OS);
// If there are other nodes in this list, iterate to them, otherwise we're
// done.
@ -366,7 +367,7 @@ EmitMatcherList(const MatcherNode *N, unsigned Indent) {
return Size;
}
void MatcherTableEmitter::EmitPredicateFunctions() {
void MatcherTableEmitter::EmitPredicateFunctions(formatted_raw_ostream &OS) {
// FIXME: Don't build off the DAGISelEmitter's predicates, emit them directly
// here into the case stmts.
@ -438,17 +439,17 @@ void llvm::EmitMatcherTable(const MatcherNode *Matcher, raw_ostream &O) {
OS << "// The main instruction selector code.\n";
OS << "SDNode *SelectCode2(SDNode *N) {\n";
MatcherTableEmitter MatcherEmitter(OS);
MatcherTableEmitter MatcherEmitter;
OS << " // Opcodes are emitted as 2 bytes, TARGET_OPCODE handles this.\n";
OS << " #define TARGET_OPCODE(X) X & 255, unsigned(X) >> 8\n";
OS << " static const unsigned char MatcherTable[] = {\n";
unsigned TotalSize = MatcherEmitter.EmitMatcherList(Matcher, 2);
unsigned TotalSize = MatcherEmitter.EmitMatcherList(Matcher, 2, OS);
OS << " 0\n }; // Total Array size is " << (TotalSize+1) << " bytes\n\n";
OS << " #undef TARGET_OPCODE\n";
OS << " return SelectCodeCommon(N, MatcherTable,sizeof(MatcherTable));\n}\n";
OS << "\n";
// Next up, emit the function for node and pattern predicates:
MatcherEmitter.EmitPredicateFunctions();
MatcherEmitter.EmitPredicateFunctions(OS);
}