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

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llvm-svn: 74172
This commit is contained in:
Sanjiv Gupta 2009-06-25 11:03:14 +00:00
parent 5e0be0b9a1
commit f81b920608
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())
return addGlobalAddress(MO.getGlobal(), MO.getOffset(),
MO.getTargetFlags());
if (MO.isMBB())
return addMBB(MO.getMBB());
if (MO.isCPI())
return addConstantPoolIndex(MO.getIndex(), MO.getOffset(),
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.
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;
// Scan for the memory address operand.
@ -119,8 +119,9 @@ bool MemSelOpt::processInstruction(MachineInstr *MI) {
for (unsigned i = 0; i < NumOperands; i++) {
MachineOperand Op = MI->getOperand(i);
if (Op.getType() == MachineOperand::MO_GlobalAddress ||
Op.getType() == MachineOperand::MO_ExternalSymbol) {
// We found one mem operand. Next one should be BS.
Op.getType() == MachineOperand::MO_ExternalSymbol ||
Op.getType() == MachineOperand::MO_MachineBasicBlock) {
// We found one mem operand. Next one may be BS.
MemOpPos = i;
break;
}
@ -133,7 +134,8 @@ bool MemSelOpt::processInstruction(MachineInstr *MI) {
MachineOperand &Op = MI->getOperand(MemOpPos);
// 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();
BuildMI(*MBB, MI, dl, TII->get(PIC16::pagesel)).
addOperand(Op);