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Implement LLVM intrinsics llvm.setjmp' and llvm.longjmp' as follows:

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* setjmp() simply returns 0
* longjmp() simply calls abort()


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7676 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Misha Brukman 2003-08-07 15:43:46 +00:00
parent 2010f7baec
commit b8db66eb17
1 changed files with 18 additions and 4 deletions
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22
lib/Target/SparcV9/SparcV9InstrSelection.cpp
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@ -16,10 +16,8 @@
#include "llvm/CodeGen/MachineFunctionInfo.h" #include "llvm/CodeGen/MachineFunctionInfo.h"
#include "llvm/CodeGen/MachineCodeForInstruction.h" #include "llvm/CodeGen/MachineCodeForInstruction.h"
#include "llvm/DerivedTypes.h" #include "llvm/DerivedTypes.h"
#include "llvm/iTerminators.h" #include "llvm/Instructions.h"
#include "llvm/iMemory.h" #include "llvm/Module.h"
#include "llvm/iOther.h"
#include "llvm/Function.h"
#include "llvm/Constants.h" #include "llvm/Constants.h"
#include "llvm/ConstantHandling.h" #include "llvm/ConstantHandling.h"
#include "llvm/Intrinsics.h" #include "llvm/Intrinsics.h"
@ -1435,6 +1433,22 @@ bool CodeGenIntrinsic(LLVMIntrinsic::ID iid, CallInst &callInstr,
addReg(callInstr.getOperand(1))); addReg(callInstr.getOperand(1)));
return true; return true;
case LLVMIntrinsic::setjmp: {
// act as if we return 0
unsigned g0 = target.getRegInfo().getZeroRegNum();
mvec.push_back(BuildMI(V9::ORr,3).addMReg(g0).addMReg(g0)
.addReg(&callInstr, MOTy::Def));
return true;
}
case LLVMIntrinsic::longjmp: {
// call abort()
Module* M = callInstr.getParent()->getParent()->getParent();
Function *F = M->getNamedFunction("abort");
mvec.push_back(BuildMI(V9::CALL, 1).addReg(F));
return true;
}
default: default:
return false; return false;
} }