tree b0b4e0219e6bb6b2900407c36bb9fc94702c2bac
parent ad06383f106ccfa299a6c7ac9720178d2d3d583f
author Andreas Arnez <arnez@linux.vnet.ibm.com> 1480006084 +0100
committer Andreas Arnez <arnez@linux.vnet.ibm.com> 1480006084 +0100

Optimize byte-aligned copies in copy_bitwise()

The function copy_bitwise used for copying DWARF pieces can potentially
be invoked for large chunks of data.  For instance, consider a large
struct one of whose members is currently located in a register.  In this
case copy_bitwise would still copy the data bitwise in a loop, which is
much slower than necessary.

This change uses memcpy for the large part instead, if possible.

gdb/ChangeLog:

	* dwarf2loc.c (copy_bitwise): Use memcpy for the middle part, if
	it is byte-aligned.