Changes in directory llvm/lib/Transforms/Scalar:
InstructionCombining.cpp updated: 1.434 -> 1.435
---
Log message:
Implement Instcombine/and.ll:test34
---
Diffs of the changes: (+12 -0)
InstructionCombining.cpp | 12 ++++++++++++
1 files changed, 12 insertions(+)
Index: llvm/lib/Transforms/Scalar/InstructionCombining.cpp
diff -u llvm/lib/Transforms/Scalar/InstructionCombining.cpp:1.434
llvm/lib/Transforms/Scalar/InstructionCombining.cpp:1.435
--- llvm/lib/Transforms/Scalar/InstructionCombining.cpp:1.434 Mon Feb 13
16:41:07 2006
+++ llvm/lib/Transforms/Scalar/InstructionCombining.cpp Mon Feb 13 17:07:23 2006
@@ -2439,6 +2439,18 @@
InsertNewInstBefore(Or, I);
return BinaryOperator::createNot(Or);
}
+
+ {
+ Value *A = 0, *B = 0;
+ ConstantInt *C1 = 0, *C2 = 0;
+ if (match(Op0, m_Or(m_Value(A), m_Value(B))))
+ if (A == Op1 || B == Op1) // (A | ?) & A --> A
+ return ReplaceInstUsesWith(I, Op1);
+ if (match(Op1, m_Or(m_Value(A), m_Value(B))))
+ if (A == Op0 || B == Op0) // A & (A | ?) --> A
+ return ReplaceInstUsesWith(I, Op0);
+ }
+
if (SetCondInst *RHS = dyn_cast<SetCondInst>(Op1)) {
// (setcc1 A, B) & (setcc2 A, B) --> (setcc3 A, B)
_______________________________________________
llvm-commits mailing list
llvm-commits@cs.uiuc.edu
http://lists.cs.uiuc.edu/mailman/listinfo/llvm-commits
