add some random notes.
llvm-svn: 131862
diff --git a/llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp b/llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp
index c96741a..98a3654 100644
--- a/llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp
+++ b/llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp
@@ -40,6 +40,11 @@
return IC.Builder->CreateShl(One, A);
}
+ // TODO: Lots more we could do here:
+ // "1 >> X" could get an "isexact" bit.
+ // If V is a phi node, we can call this on each of its operands.
+ // "select cond, X, 0" can simplify to "X".
+
return 0;
}