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Darwin puts float and double literal constants into literal4 and literal8 sections.

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llvm-svn: 28957
This commit is contained in:
Evan Cheng 2006-06-28 07:35:41 +00:00
parent 24a9a6df27
commit 3963b5ee02
2 changed files with 58 additions and 0 deletions
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52
lib/Target/X86/X86AsmPrinter.cpp
View File

@ -222,6 +222,58 @@ bool X86SharedAsmPrinter::doFinalization(Module &M) {
return false; // success
}
void X86SharedAsmPrinter::EmitConstantPool(MachineConstantPool *MCP) {
if (!Subtarget->TargetType == X86Subtarget::isDarwin) {
AsmPrinter::EmitConstantPool(MCP);
return;
}
const std::vector<MachineConstantPoolEntry> &CP = MCP->getConstants();
if (CP.empty()) return;
std::vector<MachineConstantPoolEntry> FloatCPs;
std::vector<MachineConstantPoolEntry> DoubleCPs;
std::vector<MachineConstantPoolEntry> OtherCPs;
// const TargetData *TD = TM.getTargetData();
// unsigned Align = MCP->getConstantPoolAlignment();
for (unsigned i = 0, e = CP.size(); i != e; ++i) {
MachineConstantPoolEntry CPE = CP[i];
const Constant *CV = CPE.Val;
const Type *Ty = CV->getType();
if (Ty->getTypeID() == Type::FloatTyID)
FloatCPs.push_back(CPE);
else if (Ty->getTypeID() == Type::DoubleTyID)
DoubleCPs.push_back(CPE);
else
OtherCPs.push_back(CPE);
}
EmitConstantPool(MCP, FloatCPs, "\t.literal4");
EmitConstantPool(MCP, DoubleCPs, "\t.literal8");
EmitConstantPool(MCP, OtherCPs, ConstantPoolSection);
}
void
X86SharedAsmPrinter::EmitConstantPool(MachineConstantPool *MCP,
std::vector<MachineConstantPoolEntry> &CP,
const char *Section) {
if (CP.empty()) return;
SwitchToDataSection(Section, 0);
EmitAlignment(MCP->getConstantPoolAlignment());
for (unsigned i = 0, e = CP.size(); i != e; ++i) {
O << PrivateGlobalPrefix << "CPI" << getFunctionNumber() << '_' << i
<< ":\t\t\t\t\t" << CommentString << " ";
WriteTypeSymbolic(O, CP[i].Val->getType(), 0) << '\n';
EmitGlobalConstant(CP[i].Val);
if (i != e-1) {
unsigned EntSize = TM.getTargetData()->getTypeSize(CP[i].Val->getType());
unsigned ValEnd = CP[i].Offset + EntSize;
// Emit inter-object padding for alignment.
EmitZeros(CP[i+1].Offset-ValEnd);
}
}
}
/// createX86CodePrinterPass - Returns a pass that prints the X86 assembly code
/// for a MachineFunction to the given output stream, using the given target
/// machine description.

6
lib/Target/X86/X86AsmPrinter.h
View File

@ -20,6 +20,7 @@
#include "X86TargetMachine.h"
#include "llvm/CodeGen/AsmPrinter.h"
#include "llvm/CodeGen/DwarfWriter.h"
#include "llvm/CodeGen/MachineConstantPool.h"
#include "llvm/CodeGen/MachineDebugInfo.h"
#include "llvm/ADT/Statistic.h"
#include <set>
@ -92,6 +93,11 @@ struct X86SharedAsmPrinter : public AsmPrinter {
MI->getOperand(Op+3).isGlobalAddress() ||
MI->getOperand(Op+3).isConstantPoolIndex());
}
virtual void EmitConstantPool(MachineConstantPool *MCP);
void EmitConstantPool(MachineConstantPool *MCP,
std::vector<MachineConstantPoolEntry> &CP,
const char *Section);
};
} // end namespace llvm