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* config/i386/i386-c.c (ix86_target_macros): Define __SEG_FS,
__SEG_GS, __SEG_TLS.
(ix86_register_pragmas): Register address spaces __seg_fs,
__seg_gs, __seg_tls.
* config/i386/i386-protos.h (enum ix86_address_seg): Remove.
(ADDR_SPACE_SEG_FS, ADDR_SPACE_SEG_GS, ADDR_SPACE_SEG_TLS): New.
(struct ix86_address): Use addr_space_t instead of ix86_address_seg.
* config/i386/i386.c (ix86_decompose_address): Likewise.
(ix86_legitimate_address_p): Likewise.
(memory_address_length): Likewise. Check mem address space too.
(ix86_print_operand): Use ix86_print_operand_address_as.
(ix86_print_operand_address_as): Rename from
ix86_print_operand_address, add new addr_space_t parameter.
Validate that either the parameter or the ix86_address segment
is default address space. Handle ADDR_SPACE_SEG_TLS.
(ix86_print_operand_address): New.
(ix86_addr_space_subset_p, TARGET_ADDR_SPACE_SUBSET_P): New.
(ix86_addr_space_convert, TARGET_ADDR_SPACE_CONVERT): New.
(ix86_addr_space_debug, TARGET_ADDR_SPACE_DEBUG): New.
(ix86_addr_space_zero_address_valid): New.
(TARGET_ADDR_SPACE_ZERO_ADDRESS_VALID): New.
* config/i386/i386.h (DEFAULT_TLS_SEG_REG): Use addr_space_t constants.
* config/i386/rdos.h (DEFAULT_TLS_SEG_REG): Likewise.
* config/i386/predicates.md (address_no_seg_operand): Likewise.
(vsib_address_operand): Likewise.
(address_mpx_no_base_operand): Likewise.
(address_mpx_no_index_operand): Likewise.
* doc/extend.texi (x86 Named Address Spaces): New section.
* gcc.target/i386/addr-space-1.c: New test.
* gcc.target/i386/addr-space-2.c: New test.
* gcc.target/i386/addr-space-3.c: New test.
From-SVN: r230003
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