Add a fast-path for register values. Add support for constant pool entries,
allowing us to compile this: float %test2(float* %P) { %Q = load float* %P %R = add float %Q, 10.1 ret float %R } to this: _test2: lfs r2, 0(r3) lis r3, ha16(.CPI_test2_0) lfs r3, lo16(.CPI_test2_0)(r3) fadds f1, r2, r3 blr llvm-svn: 22962
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@ -111,7 +111,16 @@ unsigned SimpleSched::Emit(SDOperand Op) {
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// Emit all of the operands of this instruction, adding them to the
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// Emit all of the operands of this instruction, adding them to the
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// instruction as appropriate.
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// instruction as appropriate.
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for (unsigned i = 0, e = Op.getNumOperands(); i != e; ++i) {
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for (unsigned i = 0, e = Op.getNumOperands(); i != e; ++i) {
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if (ConstantSDNode *C = dyn_cast<ConstantSDNode>(Op.getOperand(i))) {
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if (Op.getOperand(i).isTargetOpcode()) {
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// Note that this case is redundant with the final else block, but we
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// include it because it is the most common and it makes the logic
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// simpler here.
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unsigned R = Emit(Op.getOperand(i));
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// Add an operand, unless this corresponds to a chain node.
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if (Op.getOperand(i).getValueType() != MVT::Other)
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MI->addRegOperand(R, MachineOperand::Use);
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} else if (ConstantSDNode *C =
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dyn_cast<ConstantSDNode>(Op.getOperand(i))) {
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MI->addZeroExtImm64Operand(C->getValue());
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MI->addZeroExtImm64Operand(C->getValue());
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} else if (RegisterSDNode*R =dyn_cast<RegisterSDNode>(Op.getOperand(i))) {
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} else if (RegisterSDNode*R =dyn_cast<RegisterSDNode>(Op.getOperand(i))) {
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MI->addRegOperand(R->getReg(), MachineOperand::Use);
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MI->addRegOperand(R->getReg(), MachineOperand::Use);
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@ -124,6 +133,9 @@ unsigned SimpleSched::Emit(SDOperand Op) {
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} else if (FrameIndexSDNode *FI =
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} else if (FrameIndexSDNode *FI =
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dyn_cast<FrameIndexSDNode>(Op.getOperand(i))) {
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dyn_cast<FrameIndexSDNode>(Op.getOperand(i))) {
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MI->addFrameIndexOperand(FI->getIndex());
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MI->addFrameIndexOperand(FI->getIndex());
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} else if (ConstantPoolSDNode *CP =
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dyn_cast<ConstantPoolSDNode>(Op.getOperand(i))) {
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MI->addConstantPoolIndexOperand(CP->getIndex());
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} else {
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} else {
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unsigned R = Emit(Op.getOperand(i));
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unsigned R = Emit(Op.getOperand(i));
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// Add an operand, unless this corresponds to a chain node.
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// Add an operand, unless this corresponds to a chain node.
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