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--- Merging r128100 into '.':

Browse Source 
U    lib/Target/ARM/ARMFastISel.cpp



git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_29@128101 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bill Wendling 2011-03-22 19:45:56 +00:00
parent 17678da4db
commit 1a4b44e2bd
1 changed files with 18 additions and 13 deletions
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31
lib/Target/ARM/ARMFastISel.cpp
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@ -667,24 +667,29 @@ bool ARMFastISel::ARMComputeAddress(const Value *Obj, Address &Addr) {
TmpOffset += SL->getElementOffset(Idx);
} else {
uint64_t S = TD.getTypeAllocSize(GTI.getIndexedType());
SmallVector<const Value *, 4> Worklist;
Worklist.push_back(Op);
do {
Op = Worklist.pop_back_val();
for (;;) {
if (const ConstantInt *CI = dyn_cast<ConstantInt>(Op)) {
// Constant-offset addressing.
TmpOffset += CI->getSExtValue() * S;
} else if (isa<AddOperator>(Op) &&
isa<ConstantInt>(cast<AddOperator>(Op)->getOperand(1))) {
// An add with a constant operand. Fold the constant.
break;
}
if (isa<AddOperator>(Op) &&
(!isa<Instruction>(Op) ||
FuncInfo.MBBMap[cast<Instruction>(Op)->getParent()]
== FuncInfo.MBB) &&
isa<ConstantInt>(cast<AddOperator>(Op)->getOperand(1))) {
// An add (in the same block) with a constant operand. Fold the
// constant.
ConstantInt *CI =
cast<ConstantInt>(cast<AddOperator>(Op)->getOperand(1));
cast<ConstantInt>(cast<AddOperator>(Op)->getOperand(1));
TmpOffset += CI->getSExtValue() * S;
// Add the other operand back to the work list.
Worklist.push_back(cast<AddOperator>(Op)->getOperand(0));
} else
goto unsupported_gep;
} while (!Worklist.empty());
// Iterate on the other operand.
Op = cast<AddOperator>(Op)->getOperand(0);
continue;
}
// Unsupported
goto unsupported_gep;
}
}
}