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Minor tweak to get isel opt

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24663 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2005-12-11 09:05:13 +00:00
parent 3aed79eadb
commit 3802c2552f
1 changed files with 2 additions and 1 deletions
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3
lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
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@ -1324,7 +1324,8 @@ static void OptimizeGEPExpression(GetElementPtrInst *GEPI,
break;
}
}
if (!hasConstantIndex) return;
// If this is a GEP &Alloca, 0, 0, forward subst the frame index into uses.
if (!hasConstantIndex && !isa<AllocaInst>(GEPI->getOperand(0))) return;
// Otherwise, decompose the GEP instruction into multiplies and adds. Sum the
// constant offset (which we now know is non-zero) and deal with it later.