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Fix va_arg to generate LDDFi for floating point values, instead of LDXi. 

All non-FP cases use LDXi as before.

llvm-svn: 7765
This commit is contained in:
Vikram S. Adve 2003-08-12 03:04:05 +00:00
parent 46d9b22e90
commit 029ed09323
1 changed files with 4 additions and 2 deletions
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6
llvm/lib/Target/Sparc/SparcInstrSelection.cpp
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@ -2807,13 +2807,15 @@ GetInstructionsByRule(InstructionNode* subtreeRoot,
case 64: // reg: Phi(reg,reg) case 64: // reg: Phi(reg,reg)
break; // don't forward the value break; // don't forward the value
case 65: // reg: VaArg(reg) case 65: // reg: VaArg(reg): the va_arg instruction
{ {
// Use value initialized by va_start as pointer to args on the stack. // Use value initialized by va_start as pointer to args on the stack.
// Load argument via current pointer value, then increment pointer. // Load argument via current pointer value, then increment pointer.
int argSize = target.getFrameInfo().getSizeOfEachArgOnStack(); int argSize = target.getFrameInfo().getSizeOfEachArgOnStack();
Instruction* vaArgI = subtreeRoot->getInstruction(); Instruction* vaArgI = subtreeRoot->getInstruction();
mvec.push_back(BuildMI(V9::LDXi, 3).addReg(vaArgI->getOperand(0)). MachineOpCode loadOp = vaArgI->getType()->isFloatingPoint()? V9::LDDFi
: V9::LDXi;
mvec.push_back(BuildMI(loadOp, 3).addReg(vaArgI->getOperand(0)).
addSImm(0).addRegDef(vaArgI)); addSImm(0).addRegDef(vaArgI));
mvec.push_back(BuildMI(V9::ADDi, 3).addReg(vaArgI->getOperand(0)). mvec.push_back(BuildMI(V9::ADDi, 3).addReg(vaArgI->getOperand(0)).
addSImm(argSize).addRegDef(vaArgI->getOperand(0))); addSImm(argSize).addRegDef(vaArgI->getOperand(0)));