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Rewrite operand loops to use iterators. This shrinks .o file (at gcc4.0.1 -O3 x86) substantially (>500 bytes). Reason still unknown.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51423 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -65,8 +65,9 @@ static bool IsConstantOffsetFromGlobal(Constant *C, GlobalValue *&GV,
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// Otherwise, add any offset that our operands provide.
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gep_type_iterator GTI = gep_type_begin(CE);
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for (unsigned i = 1, e = CE->getNumOperands(); i != e; ++i, ++GTI) {
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ConstantInt *CI = dyn_cast<ConstantInt>(CE->getOperand(i));
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for (User::const_op_iterator i = CE->op_begin() + 1, e = CE->op_end();
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i != e; ++i, ++GTI) {
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ConstantInt *CI = dyn_cast<ConstantInt>(*i);
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if (!CI) return false; // Index isn't a simple constant?
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if (CI->getZExtValue() == 0) continue; // Not adding anything.
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@ -297,8 +298,8 @@ Constant *llvm::ConstantFoldInstruction(Instruction *I, const TargetData *TD) {
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// Scan the operand list, checking to see if they are all constants, if so,
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// hand off to ConstantFoldInstOperands.
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SmallVector<Constant*, 8> Ops;
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for (unsigned i = 0, e = I->getNumOperands(); i != e; ++i)
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if (Constant *Op = dyn_cast<Constant>(I->getOperand(i)))
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for (User::op_iterator i = I->op_begin(), e = I->op_end(); i != e; ++i)
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if (Constant *Op = dyn_cast<Constant>(*i))
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Ops.push_back(Op);
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else
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return 0; // All operands not constant!
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