configure.ac (HAVE_AS_IX86_REP_LOCK_PREFIX): Also require that the assembler accept 'rep bsf ...'...

* configure.ac (HAVE_AS_IX86_REP_LOCK_PREFIX): Also require that the
	assembler accept 'rep bsf ...', 'rep bsr ...', 'rep ret' and 'rep nop'.
	* configure: Regenerated.
	* config/i386/i386.md (simple_return_internal_long): Use %;
	(ctz<mode>2): Likewise.
	(*pause): Likewise.

From-SVN: r189193
This commit is contained in:
Uros Bizjak 2012-07-03 09:15:09 +02:00
parent 05437ab595
commit 43283548c1
4 changed files with 30 additions and 16 deletions

View File

@ -1,3 +1,12 @@
2012-07-03 Roland McGrath <mcgrathr@google.com>
* configure.ac (HAVE_AS_IX86_REP_LOCK_PREFIX): Also require that the
assembler accept 'rep bsf ...', 'rep bsr ...', 'rep ret' and 'rep nop'.
* configure: Regenerated.
* config/i386/i386.md (simple_return_internal_long): Use %;
(ctz<mode>2): Likewise.
(*pause): Likewise.
2012-07-02 Oleg Endo <olegendo@gcc.gnu.org>
PR target/51244
@ -30,8 +39,7 @@
(gen_inbound_check): Do not release post-dominator info here.
(process_switch): Reorder code. Expand as bit tests if it
looks like a win.
(do_switchconv): Release post-dominator info here if something
changed.
(do_switchconv): Release post-dominator info here if something changed.
(struct gimple_opt_pass): Verify more.
* tree.h (expand_switch_using_bit_tests_p): Remove prototype.
@ -42,9 +50,9 @@
dynamic type change check.
2012-07-02 Richard Guenther <rguenther@suse.de>
Michael Matz <matz@suse.de>
Tobias Grosser <tobias@grosser.es>
Sebastian Pop <sebpop@gmail.com>
Michael Matz <matz@suse.de>
Tobias Grosser <tobias@grosser.es>
Sebastian Pop <sebpop@gmail.com>
* Makefile.in: Remove PPL flags in favor of ISL ones.
(BACKENDLIBS): Remove PPL libs.
@ -55,8 +63,7 @@
(graphite-poly.o): Likewise.
* configure.ac: Declare ISL vars instead of PPL ones.
* configure: Regenerated.
* doc/install.texi: Replace PPL requirement documentation
with ISL one.
* doc/install.texi: Replace PPL requirement documentation with ISL one.
* graphite-blocking.c: Remove PPL code, add ISL equivalent.
* graphite-clast-to-gimple.c: Likewise.
* graphite-dependences.c: Likewise.
@ -76,7 +83,7 @@
Merge from graphite branch
2011-07-21 Tobias Grosser <tobias@grosser.es>
* Makefile.in (graphite-clast-to-gimple.o, graphite-cloog-util.o):
Remove graphite-cloog-util.h.
* graphite-clast-to-gimple.c (gcc_type_for_iv_of_clast_loop,
@ -122,7 +129,7 @@
* graphite-clast-to-gimple.h (scop_to_clast): Remove.
2012-01-11 Tobias Grosser <tobias@grosser.es>
* graphite-clast-to-gimple.c (clast_name_to_index,
clast_name_to_lb_ub, clast_name_to_gcc): Change types.
(clast_to_gcc_expression): Add clast_expr_name as a new
@ -172,7 +179,7 @@
(crc32_byte): ... here. Use it.
(crc32_unsigned): New.
2012-06-29 Cary Coutant <ccoutant@google.com>
2012-06-29 Cary Coutant <ccoutant@google.com>
* dwarf2out.c (add_pubname_string): Don't check for want_pubnames.
(gen_subprogram_die): Don't add pubname if want_pubnames is false.
@ -199,8 +206,7 @@
2012-06-29 Jakub Jelinek <jakub@redhat.com>
* tree-vect-generic.c (expand_vector_divmod): For even/odd
widening multiply, put even always as first argument to
VEC_PERM_EXPR.
widening multiply, put even always as first argument to VEC_PERM_EXPR.
2012-06-29 Richard Henderson <rth@redhat.com>

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@ -11904,7 +11904,7 @@
[(simple_return)
(unspec [(const_int 0)] UNSPEC_REP)]
"reload_completed"
"rep\;ret"
"rep%; ret"
[(set_attr "length" "2")
(set_attr "atom_unit" "jeu")
(set_attr "length_immediate" "0")
@ -12236,8 +12236,8 @@
else if (optimize_function_for_size_p (cfun))
;
else if (TARGET_GENERIC)
/* tzcnt expands to rep;bsf and we can use it even if !TARGET_BMI. */
return "rep; bsf{<imodesuffix>}\t{%1, %0|%0, %1}";
/* tzcnt expands to 'rep bsf' and we can use it even if !TARGET_BMI. */
return "rep%; bsf{<imodesuffix>}\t{%1, %0|%0, %1}";
return "bsf{<imodesuffix>}\t{%1, %0|%0, %1}";
}
@ -18131,7 +18131,7 @@
[(set (match_operand:BLK 0)
(unspec:BLK [(match_dup 0)] UNSPEC_PAUSE))]
""
"rep; nop"
"rep%; nop"
[(set_attr "length" "2")
(set_attr "memory" "unknown")])

4
gcc/configure vendored
View File

@ -24790,6 +24790,10 @@ else
gcc_cv_as_ix86_rep_lock_prefix=no
if test x$gcc_cv_as != x; then
$as_echo 'rep movsl
rep ret
rep nop
rep bsf %ecx, %eax
rep bsr %ecx, %eax
lock addl %edi, (%eax,%esi)
lock orl $0, (%esp)' > conftest.s
if { ac_try='$gcc_cv_as $gcc_cv_as_flags -o conftest.o conftest.s >&5'

View File

@ -3641,6 +3641,10 @@ foo: nop
gcc_GAS_CHECK_FEATURE([rep and lock prefix],
gcc_cv_as_ix86_rep_lock_prefix,,,
[rep movsl
rep ret
rep nop
rep bsf %ecx, %eax
rep bsr %ecx, %eax
lock addl %edi, (%eax,%esi)
lock orl $0, (%esp)],,
[AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,