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For extended loads of type i1 to i8, we will need to at least one byte from memory.

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The change in the .td file is to mark the side effects of mov insn.

llvm-svn: 74768
This commit is contained in:
Sanjiv Gupta 2009-07-03 07:58:59 +00:00
parent f74cd942cc
commit 1412c019ac
2 changed files with 6 additions and 2 deletions
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6
lib/Target/PIC16/PIC16ISelLowering.cpp
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@ -841,12 +841,16 @@ SDValue PIC16TargetLowering::ExpandLoad(SDNode *N, SelectionDAG &DAG) {
// i.e. without any extension
MVT MemVT = LD->getMemoryVT();
unsigned MemBytes = MemVT.getSizeInBits() / 8;
// if MVT::i1 is extended to MVT::i8 then MemBytes will be zero
// So set it to one
if (MemBytes == 0) MemBytes = 1;
unsigned ExtdBytes = VT.getSizeInBits() / 8;
Offset = DAG.getConstant(LoadOffset, MVT::i8);
Tys = DAG.getVTList(MVT::i8, MVT::Other);
// For MemBytes generate PIC16Load with proper offset
for (iter=0; iter<MemBytes; ++iter) {
for (iter=0; iter < MemBytes; ++iter) {
// Add the pointer offset if any
Offset = DAG.getConstant(iter + LoadOffset, MVT::i8);
Load = DAG.getNode(PIC16ISD::PIC16Load, dl, Tys, Chain, PtrLo, PtrHi,

2
lib/Target/PIC16/PIC16InstrInfo.td
View File

@ -299,7 +299,7 @@ def store_indirect :
// Direct load.
// Input Operands are: ptrlo = GA, offset = offset, ptrhi = banksel.
// Output: dst = W
let mayLoad = 1 in
let Defs = [STATUS], mayLoad = 1 in
class MOVF_INSN<bits<6> OpCode, SDNode OpNodeSrc, SDNode Op>:
ByteFormat<0, (outs GPR:$dst),
(ins i8imm:$offset, i8mem:$ptrlo, i8imm:$ptrhi),