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Add support for setjmp/longjmp primitives

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Patch checked in for Bill Wendling :)

llvm-svn: 6241
This commit is contained in:
Chris Lattner 2003-05-17 22:26:33 +00:00
parent e8cd1e362c
commit 435e5592a9
4 changed files with 30 additions and 15 deletions
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4
include/llvm/Intrinsics.h
View File

@ -12,9 +12,13 @@
namespace LLVMIntrinsic {
enum ID {
not_intrinsic = 0, // Must be zero
va_start, // Used to represent a va_start call in C
va_end, // Used to represent a va_end call in C
va_copy, // Used to represent a va_copy call in C
setjmp, // Used to represent a setjmp call in C
longjmp, // Used to represent a longjmp call in C
};
}

15
lib/CWriter/Writer.cpp
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@ -543,6 +543,7 @@ void CWriter::printModule(Module *M) {
Out << "/* Provide Declarations */\n";
generateAllocaDecl(Out);
Out << "#include <stdarg.h>\n";
Out << "#include <setjmp.h>\n";
// Provide a definition for null if one does not already exist,
// and for `bool' if not compiling with a C++ compiler.
@ -1022,7 +1023,6 @@ void CWriter::visitCallInst(CallInst &I) {
writeOperand(&I.getParent()->getParent()->aback());
Out << ")";
return;
case LLVMIntrinsic::va_end:
Out << "va_end((va_list)*";
writeOperand(I.getOperand(1));
@ -1035,6 +1035,19 @@ void CWriter::visitCallInst(CallInst &I) {
writeOperand(I.getOperand(2));
Out << ")";
return;
case LLVMIntrinsic::setjmp:
Out << "setjmp((jmp_buf)";
writeOperand(I.getOperand(1));
Out << ")";
return;
case LLVMIntrinsic::longjmp:
Out << "longjmp((jmp_buf)";
writeOperand(I.getOperand(1));
Out << ", ";
writeOperand(I.getOperand(2));
Out << ")";
return;
}
}

22
lib/VMCore/Function.cpp
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@ -164,20 +164,16 @@ unsigned Function::getIntrinsicID() const {
return 0; // All intrinsics start with 'llvm.'
switch (getName()[5]) {
case 'l':
if (getName() == "llvm.longjmp") return LLVMIntrinsic::longjmp;
break;
case 's':
if (getName() == "llvm.setjmp") return LLVMIntrinsic::setjmp;
break;
case 'v':
if (getName().size() >= 9) {
switch (getName()[8]) {
case 's':
if (getName() == "llvm.va_start") return LLVMIntrinsic::va_start;
break;
case 'e':
if (getName() == "llvm.va_end") return LLVMIntrinsic::va_end;
break;
case 'c':
if (getName() == "llvm.va_copy") return LLVMIntrinsic::va_copy;
break;
}
}
if (getName() == "llvm.va_copy") return LLVMIntrinsic::va_copy;
if (getName() == "llvm.va_end") return LLVMIntrinsic::va_end;
if (getName() == "llvm.va_start") return LLVMIntrinsic::va_start;
break;
}
// The "llvm." namespace is reserved!

4
lib/VMCore/Verifier.cpp
View File

@ -517,8 +517,10 @@ void Verifier::visitIntrinsicFunctionCall(LLVMIntrinsic::ID ID, CallInst &CI) {
" args!", &CI);
NumArgs = 1;
break;
case LLVMIntrinsic::va_end: NumArgs = 1; break;
case LLVMIntrinsic::va_end: NumArgs = 1; break;
case LLVMIntrinsic::va_copy: NumArgs = 2; break;
case LLVMIntrinsic::setjmp: NumArgs = 1; break;
case LLVMIntrinsic::longjmp: NumArgs = 2; break;
case LLVMIntrinsic::not_intrinsic:
assert(0 && "Invalid intrinsic!"); NumArgs = 0; break;
}