[llvm] r183073 - APInt: Simplify code. No functionality change.

[Benjamin Kramer]

Author: d0k
Date: Sat Jun  1 06:26:39 2013
New Revision: 183073

URL: http://llvm.org/viewvc/llvm-project?rev=183073&view=rev
Log:
APInt: Simplify code. No functionality change.

Modified:
    llvm/trunk/lib/Support/APInt.cpp

Modified: llvm/trunk/lib/Support/APInt.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Support/APInt.cpp?rev=183073&r1=183072&r2=183073&view=diff
==============================================================================
--- llvm/trunk/lib/Support/APInt.cpp (original)
+++ llvm/trunk/lib/Support/APInt.cpp Sat Jun  1 06:26:39 2013
@@ -2304,24 +2304,7 @@ namespace {
   static unsigned int
   partMSB(integerPart value)
   {
-    unsigned int n, msb;
-
-    if (value == 0)
-      return -1U;
-
-    n = integerPartWidth / 2;
-
-    msb = 0;
-    do {
-      if (value >> n) {
-        value >>= n;
-        msb += n;
-      }
-
-      n >>= 1;
-    } while (n);
-
-    return msb;
+    return findLastSet(value, ZB_Max);
   }
 
   /* Returns the bit number of the least significant set bit of a
@@ -2329,24 +2312,7 @@ namespace {
   static unsigned int
   partLSB(integerPart value)
   {
-    unsigned int n, lsb;
-
-    if (value == 0)
-      return -1U;
-
-    lsb = integerPartWidth - 1;
-    n = integerPartWidth / 2;
-
-    do {
-      if (value << n) {
-        value <<= n;
-        lsb -= n;
-      }
-
-      n >>= 1;
-    } while (n);
-
-    return lsb;
+    return findFirstSet(value, ZB_Max);
   }
 }