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Fix a bug handling instructions, like blr, which just consist of a text

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string.  The return value of printInstruction should be true for these.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29196 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2006-07-19 01:39:06 +00:00
parent 08e682ecf4
commit a6dc9fb745
1 changed files with 11 additions and 5 deletions
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16
utils/TableGen/AsmWriterEmitter.cpp
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@ -478,7 +478,7 @@ void AsmWriterEmitter::run(std::ostream &O) {
// Build an aggregate string, and build a table of offsets into it. // Build an aggregate string, and build a table of offsets into it.
std::map<std::string, unsigned> StringOffset; std::map<std::string, unsigned> StringOffset;
std::string AggregateString; std::string AggregateString;
AggregateString += '\0'; AggregateString += "\0\0";
/// OpcodeInfo - Theis encodes the index of the string to use for the first /// OpcodeInfo - Theis encodes the index of the string to use for the first
/// chunk of the output as well as indices used for operand printing. /// chunk of the output as well as indices used for operand printing.
@ -488,9 +488,14 @@ void AsmWriterEmitter::run(std::ostream &O) {
for (unsigned i = 0, e = NumberedInstructions.size(); i != e; ++i) { for (unsigned i = 0, e = NumberedInstructions.size(); i != e; ++i) {
AsmWriterInst *AWI = CGIAWIMap[NumberedInstructions[i]]; AsmWriterInst *AWI = CGIAWIMap[NumberedInstructions[i]];
unsigned Idx; unsigned Idx;
if (AWI == 0 || AWI->Operands[0].Str.empty()) { if (AWI == 0) {
// Something not handled by the asmwriter printer. // Something not handled by the asmwriter printer.
Idx = 0; Idx = 0;
} else if (AWI->Operands[0].OperandType !=
AsmWriterOperand::isLiteralTextOperand ||
AWI->Operands[0].Str.empty()) {
// Something handled by the asmwriter printer, but with no leading string.
Idx = 1;
} else { } else {
unsigned &Entry = StringOffset[AWI->Operands[0].Str]; unsigned &Entry = StringOffset[AWI->Operands[0].Str];
if (Entry == 0) { if (Entry == 0) {
@ -522,10 +527,10 @@ void AsmWriterEmitter::run(std::ostream &O) {
while (1) { while (1) {
std::vector<std::string> UniqueOperandCommands; std::vector<std::string> UniqueOperandCommands;
// For the first operand check, add a default value that unhandled // For the first operand check, add a default value for instructions with
// instructions will use. // just opcode strings to use.
if (isFirst) { if (isFirst) {
UniqueOperandCommands.push_back(" return false;\n"); UniqueOperandCommands.push_back(" return true;\n");
isFirst = false; isFirst = false;
} }
@ -618,6 +623,7 @@ void AsmWriterEmitter::run(std::ostream &O) {
O << " // Emit the opcode for the instruction.\n" O << " // Emit the opcode for the instruction.\n"
<< " unsigned Bits = OpInfo[MI->getOpcode()];\n" << " unsigned Bits = OpInfo[MI->getOpcode()];\n"
<< " if (Bits == 0) return false;\n"
<< " O << AsmStrs+(Bits & " << (1 << AsmStrBits)-1 << ");\n\n"; << " O << AsmStrs+(Bits & " << (1 << AsmStrBits)-1 << ");\n\n";
// Output the table driven operand information. // Output the table driven operand information.