FT32 makes use of multiple address spaces.

FT32 makes use of multiple address spaces.

FT32 makes use of multiple address spaces. When trying to inspect
objects in GDB, GDB was treating them as a straight "const". The cause
seems to be in GCC DWARF2 output.

This output is handled in gcc/gcc/dwarf2out.c, where modified_type_die()
checks that TYPE has qualifiers CV_QUALS. However while TYPE has
ADDR_SPACE qualifiers, the modified_type_die() explicitly discards the
ADDR_SPACE qualifiers.

This patch retains the ADDR_SPACE qualifiers as modified_type_die()
outputs the DWARF type tree.  This allows the types to match, and correct
type information for the object is emitted.

[gcc]

2017-11-06  James Bowman  <james.bowman@ftdichip.com>

	* gcc/dwarf2out.c (modified_type_die): Retain ADDR_SPACE
	qualifiers.
        (add_type_attribute) likewise.

From-SVN: r254484