commit ea00b499c703bbdbf4c87573cf2fe5b46a0bf1c2
author Matt Arsenault <Matthew.Arsenault@amd.com> Wed Mar 23 23:51:45 2016 +0000
committer Matt Arsenault <Matthew.Arsenault@amd.com> Wed Mar 23 23:51:45 2016 +0000
tree 662608e8cdefe69d39b0620f5c3690add0796c0b
parent cbfe7bb72e6de9db72bbcbe8c697bf3b7627e18d

APFloat: Fix signalling nans for scalbn

llvm-svn: 264219

llvm/lib/Support/APFloat.cpp

diff --git a/llvm/lib/Support/APFloat.cpp b/llvm/lib/Support/APFloat.cpp
index ada392c..a8e14d6 100644
--- a/llvm/lib/Support/APFloat.cpp
+++ b/llvm/lib/Support/APFloat.cpp
@@ -3984,6 +3984,8 @@
   // Clamp to one past the range ends to let normalize handle overlflow.
   X.exponent += std::min(std::max(Exp, -MaxIncrement - 1), MaxIncrement);
   X.normalize(RoundingMode, lfExactlyZero);
+  if (X.isNaN())
+    X.makeQuiet();
   return X;
 }