Remove prolific source of VC++ truncation warnings.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23657 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/include/llvm/Support/MathExtras.h b/include/llvm/Support/MathExtras.h
index 1dbcf438910cc95737e0874bc8b29aeaef4ab79a..32cc473022ff90296a44faf481f6db20c10cf69a 100644 (file)
--- a/include/llvm/Support/MathExtras.h
+++ b/include/llvm/Support/MathExtras.h
@@ -184,7 +184,8 @@ inline unsigned CountPopulation_32(unsigned Value) {
 // CountPopulation_64 - this function counts the number of set bits in a value,
 // (64 bit edition.)
 inline unsigned CountPopulation_64(uint64_t Value) {
-  return CountPopulation_32(Value >> 32) + CountPopulation_32(Value);
+  return CountPopulation_32(unsigned(Value >> 32)) +
+         CountPopulation_32(unsigned(Value));
 }
 
 // Log2_32 - This function returns the floor log base 2 of the specified value,