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Fix for bug 840. Only use noinline attribute if gcc version >= 3.4

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29311 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2006-07-26 23:06:27 +00:00
parent ae1d33f82d
commit 233baf1c4b
1 changed files with 6 additions and 3 deletions
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9
utils/TableGen/DAGISelEmitter.cpp
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@ -3363,11 +3363,9 @@ void DAGISelEmitter::EmitInstructionSelector(std::ostream &OS) {
}
CallerCode += ");";
CalleeCode += ") ";
#ifdef __GNUC__
// Prevent emission routines from being inlined to reduce selection
// routines stack frame sizes.
CalleeCode += "__attribute__((noinline)) ";
#endif
CalleeCode += "NOINLINE ";
CalleeCode += "{\n" + CalleeDecls;
for (int j = LastPred+1; j < CodeSize; ++j)
CalleeCode += " " + GeneratedCode[j].second + '\n';
@ -3632,6 +3630,11 @@ void DAGISelEmitter::run(std::ostream &OS) {
<< "// *** instruction selector class. These functions are really "
<< "methods.\n\n";
OS << "#if defined(__GNUC__) && \\\n";
OS << " ((__GNUC__ > 3) || ((__GNUC__ == 3) && (__GNUC_MINOR__ >= 4)))\n";
OS << "#define NOINLINE __attribute__((noinline))\n";
OS << "#endif\n\n";
OS << "// Instance var to keep track of multiply used nodes that have \n"
<< "// already been selected.\n"
<< "std::map<SDOperand, SDOperand> CodeGenMap;\n";