fix minsize detection: minsize attribute implies optimizing for size
llvm-svn: 244631
diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
index 805e68f..244cc7b 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
@@ -3971,10 +3971,9 @@
return DAG.getConstantFP(1.0, DL, LHS.getValueType());
const Function *F = DAG.getMachineFunction().getFunction();
- // FIXME: Use Function::optForSize().
- if (!F->hasFnAttribute(Attribute::OptimizeForSize) ||
- // If optimizing for size, don't insert too many multiplies. This
- // inserts up to 5 multiplies.
+ if (!F->optForSize() ||
+ // If optimizing for size, don't insert too many multiplies.
+ // This inserts up to 5 multiplies.
countPopulation(Val) + Log2_32(Val) < 7) {
// We use the simple binary decomposition method to generate the multiply
// sequence. There are more optimal ways to do this (for example,