commit 6c9b8d3d411b0ee65263dc41d2b953fe118cf31e
author Chris Lattner <sabre@nondot.org> Sun May 22 18:26:48 2011 +0000
committer Chris Lattner <sabre@nondot.org> Sun May 22 18:26:48 2011 +0000
tree 1d0ab01605194adb593d85257a7f7381a7b74fa0
parent cb559c1270a773de2c97c99700dcd5456f24a732

add some random notes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131862 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Transforms/InstCombine/InstCombineMulDivRem.cpp

diff --git a/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp b/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp
index c96741a..98a3654 100644
--- a/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp
+++ b/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;
 }