[Lldb-commits] [lldb] r347087 - [Cocoa] Prefer llvm::SignExtend64. Pointed out by zturner.

[Davide Italiano via lldb-commits]

Author: davide
Date: Fri Nov 16 11:53:00 2018
New Revision: 347087

URL: http://llvm.org/viewvc/llvm-project?rev=347087&view=rev
Log:
[Cocoa] Prefer llvm::SignExtend64. Pointed out by zturner.

Modified:
    lldb/trunk/source/Plugins/Language/ObjC/Cocoa.cpp

Modified: lldb/trunk/source/Plugins/Language/ObjC/Cocoa.cpp
URL: http://llvm.org/viewvc/llvm-project/lldb/trunk/source/Plugins/Language/ObjC/Cocoa.cpp?rev=347087&r1=347086&r2=347087&view=diff
==============================================================================
--- lldb/trunk/source/Plugins/Language/ObjC/Cocoa.cpp (original)
+++ lldb/trunk/source/Plugins/Language/ObjC/Cocoa.cpp Fri Nov 16 11:53:00 2018
@@ -773,8 +773,7 @@ static uint64_t decodeExponent(uint64_t
   int64_t exp7 = exp;
   // Tagged exponent field is 7-bit signed. Sign-extend the value to 64 bits
   // before performing arithmetic.
-  int64_t exp11 = ((exp7 << 57) >> 57) + TAGGED_DATE_EXPONENT_BIAS;
-  return exp11;
+  return llvm::SignExtend64<7>(exp) + TAGGED_DATE_EXPONENT_BIAS;
 }
 
 static uint64_t decodeTaggedTimeInterval(uint64_t encodedTimeInterval) {