[BranchProbability] Delete a redundant overflow check

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@363492 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Support/BranchProbability.cpp b/lib/Support/BranchProbability.cpp
index bb608da16c174d2ca1f5af6e54b7c8db93ab15c4..195e2d58d8e191f82a67c2c1b110fd73515d8c7d 100644 (file)
--- a/lib/Support/BranchProbability.cpp
+++ b/lib/Support/BranchProbability.cpp
@@ -88,10 +88,6 @@ static uint64_t scale(uint64_t Num, uint32_t N, uint32_t D) {
   // 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;