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Allow target to customize directive used to switch to arbitrary section in SwitchSection, 

add generic constant pool emitter

llvm-svn: 24464
This commit is contained in:
Chris Lattner 2005-11-21 08:25:09 +00:00
parent 4fd1c411ba
commit f2991cee1f
1 changed files with 28 additions and 1 deletions
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29
llvm/lib/CodeGen/AsmPrinter.cpp
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@ -14,6 +14,7 @@
#include "llvm/CodeGen/AsmPrinter.h"
#include "llvm/Constants.h"
#include "llvm/Module.h"
#include "llvm/CodeGen/MachineConstantPool.h"
#include "llvm/Support/Mangler.h"
#include "llvm/Support/MathExtras.h"
#include "llvm/Target/TargetMachine.h"
@ -26,7 +27,7 @@ void AsmPrinter::SwitchSection(const char *NewSection, const GlobalValue *GV) {
std::string NS;
if (GV && GV->hasSection())
NS = ".section " + GV->getSection();
NS = SwitchToSectionDirective + GV->getSection();
else
NS = NewSection;
@ -54,6 +55,32 @@ void AsmPrinter::SetupMachineFunction(MachineFunction &MF) {
IncrementFunctionNumber();
}
/// EmitConstantPool - Print to the current output stream assembly
/// representations of the constants in the constant pool MCP. This is
/// used to print out constants which have been "spilled to memory" by
/// the code generator.
///
void AsmPrinter::EmitConstantPool(MachineConstantPool *MCP) {
const std::vector<Constant*> &CP = MCP->getConstants();
if (CP.empty()) return;
const TargetData &TD = TM.getTargetData();
SwitchSection(ConstantPoolSection, 0);
for (unsigned i = 0, e = CP.size(); i != e; ++i) {
// FIXME: force doubles to be naturally aligned. We should handle this
// more correctly in the future.
unsigned Alignment = TD.getTypeAlignmentShift(CP[i]->getType());
if (CP[i]->getType() == Type::DoubleTy && Alignment < 3) Alignment = 3;
EmitAlignment(Alignment);
O << PrivateGlobalPrefix << "CPI" << getFunctionNumber() << '_' << i
<< ":\t\t\t\t\t" << CommentString << *CP[i] << '\n';
EmitGlobalConstant(CP[i]);
}
}
// EmitAlignment - Emit an alignment directive to the specified power of two.
void AsmPrinter::EmitAlignment(unsigned NumBits, const GlobalValue *GV) const {
if (GV && GV->getAlignment())