[llvm-commits] [llvm] r42985 - /llvm/trunk/lib/Transforms/Scalar/InstructionCombining.cpp

[Devang Patel]

Author: dpatel
Date: Mon Oct 15 10:31:35 2007
New Revision: 42985

URL: http://llvm.org/viewvc/llvm-project?rev=42985&view=rev
Log:
Achieve same result but use fewer lines of code.

Modified:
    llvm/trunk/lib/Transforms/Scalar/InstructionCombining.cpp

Modified: llvm/trunk/lib/Transforms/Scalar/InstructionCombining.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/Scalar/InstructionCombining.cpp?rev=42985&r1=42984&r2=42985&view=diff

==============================================================================
--- llvm/trunk/lib/Transforms/Scalar/InstructionCombining.cpp (original)
+++ llvm/trunk/lib/Transforms/Scalar/InstructionCombining.cpp Mon Oct 15 10:31:35 2007
@@ -7674,14 +7674,13 @@
         unsigned Align = cast<ConstantInt>(CI.getOperand(4))->getZExtValue();
         PointerType *NewPtrTy = NULL;
         // Destination pointer type is always i8 *
-        if (Size == 8)
-          NewPtrTy = PointerType::get(Type::Int64Ty);
-        else if (Size == 4)
-          NewPtrTy = PointerType::get(Type::Int32Ty);
-        else if (Size == 2)
-          NewPtrTy = PointerType::get(Type::Int16Ty);
-        else if (Size == 1)
-          NewPtrTy = PointerType::get(Type::Int8Ty);
+        // If Size is 8 then use Int64Ty
+        // If Size is 4 then use Int32Ty
+        // If Size is 2 then use Int16Ty
+        // If Size is 1 then use Int8Ty
+        if (Size && Size <=8 && !(Size&(Size-1)))
+          NewPtrTy = PointerType::get(IntegerType::get(Size<<3));
+
         if (NewPtrTy) {
           Value *Src = InsertCastBefore(Instruction::BitCast, CI.getOperand(2), NewPtrTy, CI);
           Value *Dest = InsertCastBefore(Instruction::BitCast, CI.getOperand(1), NewPtrTy, CI);