[llvm] r363492 - [BranchProbability] Delete a redundant overflow check

[Fangrui Song via llvm-commits]

Author: maskray
Date: Sat Jun 15 03:09:59 2019
New Revision: 363492

URL: http://llvm.org/viewvc/llvm-project?rev=363492&view=rev
Log:
[BranchProbability] Delete a redundant overflow check

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

Modified: llvm/trunk/lib/Support/BranchProbability.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Support/BranchProbability.cpp?rev=363492&r1=363491&r2=363492&view=diff
==============================================================================
--- llvm/trunk/lib/Support/BranchProbability.cpp (original)
+++ llvm/trunk/lib/Support/BranchProbability.cpp Sat Jun 15 03:09:59 2019
@@ -88,10 +88,6 @@ static uint64_t scale(uint64_t Num, uint
   // Carry.
   Upper32 += Mid32 < Mid32Partial;
 
-  // Check for overflow.
-  if (Upper32 >= D)
-    return UINT64_MAX;
-
   uint64_t Rem = (uint64_t(Upper32) << 32) | Mid32;
   uint64_t UpperQ = Rem / D;