Changes in directory llvm/lib/CodeGen:
AsmPrinter.cpp updated: 1.82 -> 1.83
---
Log message:
Add support to print 4-, 8-, and 16- byte constant literals in special
sections. e.g. On Darwin that would be .literal4 and .literal8.
---
Diffs of the changes: (+48 -10)
AsmPrinter.cpp | 58 +++++++++++++++++++++++++++++++++++++++++++++++----------
1 files changed, 48 insertions(+), 10 deletions(-)
Index: llvm/lib/CodeGen/AsmPrinter.cpp
diff -u llvm/lib/CodeGen/AsmPrinter.cpp:1.82
llvm/lib/CodeGen/AsmPrinter.cpp:1.83
--- llvm/lib/CodeGen/AsmPrinter.cpp:1.82 Thu Jun 15 14:37:14 2006
+++ llvm/lib/CodeGen/AsmPrinter.cpp Wed Jun 28 19:26:09 2006
@@ -55,6 +55,9 @@
JumpTableSection("\t.section .rodata\n"),
StaticCtorsSection("\t.section .ctors,\"aw\",@progbits"),
StaticDtorsSection("\t.section .dtors,\"aw\",@progbits"),
+ FourByteConstantSection(0),
+ EightByteConstantSection(0),
+ SixteenByteConstantSection(0),
LCOMMDirective(0),
COMMDirective("\t.comm\t"),
COMMDirectiveTakesAlignment(true),
@@ -147,19 +150,54 @@
void AsmPrinter::EmitConstantPool(MachineConstantPool *MCP) {
const std::vector<MachineConstantPoolEntry> &CP = MCP->getConstants();
if (CP.empty()) return;
-
- SwitchToDataSection(ConstantPoolSection, 0);
- EmitAlignment(MCP->getConstantPoolAlignment());
+
+ // Some targets require 4-, 8-, and 16- byte constant literals to be placed
+ // in special sections.
+ std::vector<std::pair<MachineConstantPoolEntry,unsigned> > FourByteCPs;
+ std::vector<std::pair<MachineConstantPoolEntry,unsigned> > EightByteCPs;
+ std::vector<std::pair<MachineConstantPoolEntry,unsigned> > SixteenByteCPs;
+ std::vector<std::pair<MachineConstantPoolEntry,unsigned> > OtherCPs;
+ 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 (FourByteConstantSection &&
+ TM.getTargetData()->getTypeSize(Ty) == 4)
+ FourByteCPs.push_back(std::make_pair(CPE, i));
+ else if (EightByteConstantSection &&
+ TM.getTargetData()->getTypeSize(Ty) == 8)
+ EightByteCPs.push_back(std::make_pair(CPE, i));
+ else if (SixteenByteConstantSection &&
+ TM.getTargetData()->getTypeSize(Ty) == 16)
+ SixteenByteCPs.push_back(std::make_pair(CPE, i));
+ else
+ OtherCPs.push_back(std::make_pair(CPE, i));
+ }
+
+ unsigned Alignment = MCP->getConstantPoolAlignment();
+ EmitConstantPool(Alignment, FourByteConstantSection, FourByteCPs);
+ EmitConstantPool(Alignment, EightByteConstantSection, EightByteCPs);
+ EmitConstantPool(Alignment, SixteenByteConstantSection, SixteenByteCPs);
+ EmitConstantPool(Alignment, ConstantPoolSection, OtherCPs);
+}
+
+void AsmPrinter::EmitConstantPool(unsigned Alignment, const char *Section,
+ std::vector<std::pair<MachineConstantPoolEntry,unsigned> > &CP)
{
+ if (CP.empty()) return;
+
+ SwitchToDataSection(Section, 0);
+ EmitAlignment(Alignment);
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);
+ O << PrivateGlobalPrefix << "CPI" << getFunctionNumber() << '_'
+ << CP[i].second << ":\t\t\t\t\t" << CommentString << " ";
+ WriteTypeSymbolic(O, CP[i].first.Val->getType(), 0) << '\n';
+ EmitGlobalConstant(CP[i].first.Val);
if (i != e-1) {
- unsigned EntSize = TM.getTargetData()->getTypeSize(CP[i].Val->getType());
- unsigned ValEnd = CP[i].Offset + EntSize;
+ unsigned EntSize =
+ TM.getTargetData()->getTypeSize(CP[i].first.Val->getType());
+ unsigned ValEnd = CP[i].first.Offset + EntSize;
// Emit inter-object padding for alignment.
- EmitZeros(CP[i+1].Offset-ValEnd);
+ EmitZeros(CP[i+1].first.Offset-ValEnd);
}
}
}
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