Don't output ABI size padding twice. By using the store

size for the field we get ABI padding automatically, so
no need to put it in again when we emit the field.

llvm-svn: 43720

llvm/lib/CodeGen/AsmPrinter.cpp

@@ -831,15 +831,16 @@ void AsmPrinter::EmitGlobalConstant(const Constant *CV, bool Packed) {
 
       // Check if padding is needed and insert one or more 0s.
       uint64_t fieldSize = TD->getTypeStoreSize(field->getType());
-      uint64_t padSize = ((i == e-1? cvsLayout->getSizeInBytes()
-                           : cvsLayout->getElementOffset(i+1))
+      uint64_t padSize = ((i == e-1 ? Size : cvsLayout->getElementOffset(i+1))
                           - cvsLayout->getElementOffset(i)) - fieldSize;
       sizeSoFar += fieldSize + padSize;
 
-      // Now print the actual field value
-      EmitGlobalConstant(field, CVS->getType()->isPacked());
+      // Now print the actual field value without ABI size padding.
+      EmitGlobalConstant(field, true);
 
-      // Insert the field padding unless it's zero bytes...
+      // Insert padding - this may include padding to increase the size of the
+      // current field up to the ABI size (if the struct is not packed) as well
+      // as padding to ensure that the next field starts at the right offset.
       EmitZeros(padSize);
     }
     assert(sizeSoFar == cvsLayout->getSizeInBytes() &&