r364139 - Remove reliance on toCharUnitsFromBits rounding down.

[Richard Smith via cfe-commits]

Author: rsmith
Date: Sat Jun 22 13:41:57 2019
New Revision: 364139

URL: http://llvm.org/viewvc/llvm-project?rev=364139&view=rev
Log:
Remove reliance on toCharUnitsFromBits rounding down.

Modified:
    cfe/trunk/lib/CodeGen/CGExprConstant.cpp

Modified: cfe/trunk/lib/CodeGen/CGExprConstant.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CGExprConstant.cpp?rev=364139&r1=364138&r2=364139&view=diff
==============================================================================
--- cfe/trunk/lib/CodeGen/CGExprConstant.cpp (original)
+++ cfe/trunk/lib/CodeGen/CGExprConstant.cpp Sat Jun 22 13:41:57 2019
@@ -187,7 +187,8 @@ bool ConstantAggregateBuilder::addBits(l
 
   // We split bit-fields up into individual bytes. Walk over the bytes and
   // update them.
-  for (CharUnits OffsetInChars = Context.toCharUnitsFromBits(OffsetInBits);
+  for (CharUnits OffsetInChars =
+           Context.toCharUnitsFromBits(OffsetInBits - OffsetWithinChar);
        /**/; ++OffsetInChars) {
     // Number of bits we want to fill in this char.
     unsigned WantedBits =