From: Chris Lattner <sabre@nondot.org>
Date: Wed, 19 Jan 2005 03:36:14 +0000 (+0000)
Subject: Add a hook to find out how the target handles shift amounts that are out of
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=d6e496732b9cc2c4b4986d015c7dba9032aaa14c;p=oota-llvm.git

Add a hook to find out how the target handles shift amounts that are out of
range.  Either they are undefined (the default), they mask the shift amount
to the size of the register (X86, Alpha, etc), or they extend the shift (PPC).

This defaults to undefined, which is conservatively correct.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19677 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/SelectionDAG/TargetLowering.cpp b/lib/CodeGen/SelectionDAG/TargetLowering.cpp
index dd8c084a597..206a8065749 100644
--- a/lib/CodeGen/SelectionDAG/TargetLowering.cpp
+++ b/lib/CodeGen/SelectionDAG/TargetLowering.cpp
@@ -25,6 +25,7 @@ TargetLowering::TargetLowering(TargetMachine &tm)
 
   IsLittleEndian = TD.isLittleEndian();
   ShiftAmountTy = SetCCResultTy = PointerTy = getValueType(TD.getIntPtrType());
+  ShiftAmtHandling = Undefined;
   memset(RegClassForVT, 0,MVT::LAST_VALUETYPE*sizeof(TargetRegisterClass*));
 }