[llvm-commits] CVS: llvm/lib/Transforms/Scalar/InstructionCombining.cpp

[Chris Lattner]

Changes in directory llvm/lib/Transforms/Scalar:

InstructionCombining.cpp updated: 1.334 -> 1.335
---
Log message:

implement or.ll:test20


---
Diffs of the changes:  (+7 -0)

 InstructionCombining.cpp |    7 +++++++
 1 files changed, 7 insertions(+)


Index: llvm/lib/Transforms/Scalar/InstructionCombining.cpp
diff -u llvm/lib/Transforms/Scalar/InstructionCombining.cpp:1.334 llvm/lib/Transforms/Scalar/InstructionCombining.cpp:1.335
--- llvm/lib/Transforms/Scalar/InstructionCombining.cpp:1.334	Wed May  4 14:10:26 2005
+++ llvm/lib/Transforms/Scalar/InstructionCombining.cpp	Thu May  5 19:58:50 2005
@@ -1872,6 +1872,13 @@
     A = 0;
   }
 
+  if (match(Op0, m_And(m_Value(A), m_Value(B))))
+    if (A == Op1 || B == Op1)    // (A & ?) | A  --> A
+      return ReplaceInstUsesWith(I, Op1);
+  if (match(Op1, m_And(m_Value(A), m_Value(B))))
+    if (A == Op0 || B == Op0)    // A | (A & ?)  --> A
+      return ReplaceInstUsesWith(I, Op0);
+
   if (match(Op1, m_Not(m_Value(B)))) {   // Op0 | ~B
     if (Op0 == B)
       return ReplaceInstUsesWith(I,