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Naturally align doubles in the constant pool, set PrivateGlobalPrefix on

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darwin, use it when printing the constant pool indices so the labels are
appropriately private, emit cp entries to .const instead of .data on darwin
and only emit a single .section for the constant pool, not one for each
entry.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24440 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2005-11-21 06:46:22 +00:00
parent adb0a068c6
commit c41cc83117
3 changed files with 17 additions and 8 deletions
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2
lib/Target/X86/X86ATTAsmPrinter.cpp
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@ -174,7 +174,7 @@ void X86ATTAsmPrinter::printMemReference(const MachineInstr *MI, unsigned Op){
O << "]"; O << "]";
return; return;
} else if (BaseReg.isConstantPoolIndex()) { } else if (BaseReg.isConstantPoolIndex()) {
O << ".CPI" << CurrentFnName << "_" O << PrivateGlobalPrefix << "CPI" << CurrentFnName << "_"
<< BaseReg.getConstantPoolIndex(); << BaseReg.getConstantPoolIndex();
if (DispSpec.getImmedValue()) if (DispSpec.getImmedValue())
O << "+" << DispSpec.getImmedValue(); O << "+" << DispSpec.getImmedValue();

21
lib/Target/X86/X86AsmPrinter.cpp
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@ -18,6 +18,7 @@
#include "X86IntelAsmPrinter.h" #include "X86IntelAsmPrinter.h"
#include "X86.h" #include "X86.h"
#include "llvm/Module.h" #include "llvm/Module.h"
#include "llvm/Type.h"
#include "llvm/Assembly/Writer.h" #include "llvm/Assembly/Writer.h"
#include "llvm/CodeGen/MachineConstantPool.h" #include "llvm/CodeGen/MachineConstantPool.h"
#include "llvm/Support/Mangler.h" #include "llvm/Support/Mangler.h"
@ -66,6 +67,7 @@ bool X86SharedAsmPrinter::doInitialization(Module& M) {
AlignmentIsInBytes = false; AlignmentIsInBytes = false;
Data64bitsDirective = 0; // we can't emit a 64-bit unit Data64bitsDirective = 0; // we can't emit a 64-bit unit
ZeroDirective = "\t.space\t"; // ".space N" emits N zeros. ZeroDirective = "\t.space\t"; // ".space N" emits N zeros.
PrivateGlobalPrefix = "L"; // Marker for constant pool idxs
} }
return AsmPrinter::doInitialization(M); return AsmPrinter::doInitialization(M);
@ -82,14 +84,21 @@ void X86SharedAsmPrinter::printConstantPool(MachineConstantPool *MCP) {
if (CP.empty()) return; if (CP.empty()) return;
if (forDarwin) {
O << "\t.const\n";
} else {
O << "\t.section .rodata\n";
}
for (unsigned i = 0, e = CP.size(); i != e; ++i) { for (unsigned i = 0, e = CP.size(); i != e; ++i) {
if (forDarwin) // FIXME: force doubles to be naturally aligned. We should handle this
O << "\t.data\n"; // more correctly in the future.
if (CP[i]->getType() == Type::DoubleTy)
emitAlignment(3);
else else
O << "\t.section .rodata\n"; emitAlignment(TD.getTypeAlignmentShift(CP[i]->getType()));
emitAlignment(TD.getTypeAlignmentShift(CP[i]->getType())); O << PrivateGlobalPrefix << "CPI" << CurrentFnName << "_" << i
O << ".CPI" << CurrentFnName << "_" << i << ":\t\t\t\t\t" << CommentString << ":\t\t\t\t\t" << CommentString << *CP[i] << "\n";
<< *CP[i] << "\n";
emitGlobalConstant(CP[i]); emitGlobalConstant(CP[i]);
} }
} }

2
lib/Target/X86/X86IntelAsmPrinter.cpp
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@ -141,7 +141,7 @@ void X86IntelAsmPrinter::printMemReference(const MachineInstr *MI, unsigned Op){
O << "]"; O << "]";
return; return;
} else if (BaseReg.isConstantPoolIndex()) { } else if (BaseReg.isConstantPoolIndex()) {
O << "[.CPI" << CurrentFnName << "_" O << "[" << PrivateGlobalPrefix << "CPI" << CurrentFnName << "_"
<< BaseReg.getConstantPoolIndex(); << BaseReg.getConstantPoolIndex();
if (IndexReg.getReg()) { if (IndexReg.getReg()) {