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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.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51423 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Gabor Greif 2008-05-22 06:43:33 +00:00
parent 687a4cb295
commit de2d74b213
1 changed files with 5 additions and 4 deletions
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9
lib/Analysis/ConstantFolding.cpp
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@ -65,8 +65,9 @@ static bool IsConstantOffsetFromGlobal(Constant *C, GlobalValue *&GV,
// Otherwise, add any offset that our operands provide.
gep_type_iterator GTI = gep_type_begin(CE);
for (unsigned i = 1, e = CE->getNumOperands(); i != e; ++i, ++GTI) {
ConstantInt *CI = dyn_cast<ConstantInt>(CE->getOperand(i));
for (User::const_op_iterator i = CE->op_begin() + 1, e = CE->op_end();
i != e; ++i, ++GTI) {
ConstantInt *CI = dyn_cast<ConstantInt>(*i);
if (!CI) return false; // Index isn't a simple constant?
if (CI->getZExtValue() == 0) continue; // Not adding anything.
@ -297,8 +298,8 @@ Constant *llvm::ConstantFoldInstruction(Instruction *I, const TargetData *TD) {
// Scan the operand list, checking to see if they are all constants, if so,
// hand off to ConstantFoldInstOperands.
SmallVector<Constant*, 8> Ops;
for (unsigned i = 0, e = I->getNumOperands(); i != e; ++i)
if (Constant *Op = dyn_cast<Constant>(I->getOperand(i)))
for (User::op_iterator i = I->op_begin(), e = I->op_end(); i != e; ++i)
if (Constant *Op = dyn_cast<Constant>(*i))
Ops.push_back(Op);
else
return 0; // All operands not constant!