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Identify unconditional gotos and generate a page sel instructions before them.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74172 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Sanjiv Gupta 2009-06-25 11:03:14 +00:00
parent a5e0abd0d4
commit 8ebd4b6422
2 changed files with 8 additions and 4 deletions
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2
include/llvm/CodeGen/MachineInstrBuilder.h
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@ -133,6 +133,8 @@ public:
if (MO.isGlobal()) if (MO.isGlobal())
return addGlobalAddress(MO.getGlobal(), MO.getOffset(), return addGlobalAddress(MO.getGlobal(), MO.getOffset(),
MO.getTargetFlags()); MO.getTargetFlags());
if (MO.isMBB())
return addMBB(MO.getMBB());
if (MO.isCPI()) if (MO.isCPI())
return addConstantPoolIndex(MO.getIndex(), MO.getOffset(), return addConstantPoolIndex(MO.getIndex(), MO.getOffset(),
MO.getTargetFlags()); MO.getTargetFlags());

10
lib/Target/PIC16/PIC16MemSelOpt.cpp
View File

@ -109,7 +109,7 @@ bool MemSelOpt::processInstruction(MachineInstr *MI) {
// If this insn is not going to access any memory, return. // If this insn is not going to access any memory, return.
const TargetInstrDesc &TID = TII->get(MI->getOpcode()); const TargetInstrDesc &TID = TII->get(MI->getOpcode());
if (! (TID.isCall() || TID.mayLoad() || TID.mayStore())) if (!(TID.isBranch() || TID.isCall() || TID.mayLoad() || TID.mayStore()))
return false; return false;
// Scan for the memory address operand. // Scan for the memory address operand.
@ -119,8 +119,9 @@ bool MemSelOpt::processInstruction(MachineInstr *MI) {
for (unsigned i = 0; i < NumOperands; i++) { for (unsigned i = 0; i < NumOperands; i++) {
MachineOperand Op = MI->getOperand(i); MachineOperand Op = MI->getOperand(i);
if (Op.getType() == MachineOperand::MO_GlobalAddress || if (Op.getType() == MachineOperand::MO_GlobalAddress ||
Op.getType() == MachineOperand::MO_ExternalSymbol) { Op.getType() == MachineOperand::MO_ExternalSymbol ||
// We found one mem operand. Next one should be BS. Op.getType() == MachineOperand::MO_MachineBasicBlock) {
// We found one mem operand. Next one may be BS.
MemOpPos = i; MemOpPos = i;
break; break;
} }
@ -133,7 +134,8 @@ bool MemSelOpt::processInstruction(MachineInstr *MI) {
MachineOperand &Op = MI->getOperand(MemOpPos); MachineOperand &Op = MI->getOperand(MemOpPos);
// If this is a pagesel material, handle it first. // If this is a pagesel material, handle it first.
if (MI->getOpcode() == PIC16::CALL) { if (MI->getOpcode() == PIC16::CALL ||
MI->getOpcode() == PIC16::br_uncond) {
DebugLoc dl = MI->getDebugLoc(); DebugLoc dl = MI->getDebugLoc();
BuildMI(*MBB, MI, dl, TII->get(PIC16::pagesel)). BuildMI(*MBB, MI, dl, TII->get(PIC16::pagesel)).
addOperand(Op); addOperand(Op);