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Richard Sandiford 0d80303065 Turn CANNOT_CHANGE_MODE_CLASS into a hook 
This also seemed like a good opportunity to reverse the sense of the
hook to "can", to avoid the awkward double negative in !CANNOT.

2017-09-15  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayard  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

gcc/
	* target.def (can_change_mode_class): New hook.
	(mode_rep_extended): Refer to it instead of CANNOT_CHANGE_MODE_CLASS.
	(hard_regno_nregs): Likewise.
	* hooks.h (hook_bool_mode_mode_reg_class_t_true): Declare.
	* hooks.c (hook_bool_mode_mode_reg_class_t_true): New function.
	* doc/tm.texi.in (CANNOT_CHANGE_MODE_CLASS): Replace with...
	(TARGET_CAN_CHANGE_MODE_CLASS): ...this.
	(LOAD_EXTEND_OP): Update accordingly.
	* doc/tm.texi: Regenerate.
	* doc/rtl.texi: Refer to TARGET_CAN_CHANGE_MODE_CLASS instead of
	CANNOT_CHANGE_MODE_CLASS.
	* hard-reg-set.h (REG_CANNOT_CHANGE_MODE_P): Replace with...
	(REG_CAN_CHANGE_MODE_P): ...this new macro.
	* combine.c (simplify_set): Update accordingly.
	* emit-rtl.c (validate_subreg): Likewise.
	* recog.c (general_operand): Likewise.
	* regcprop.c (mode_change_ok): Likewise.
	* reload1.c (choose_reload_regs): Likewise.
	(inherit_piecemeal_p): Likewise.
	* rtlanal.c (simplify_subreg_regno): Likewise.
	* postreload.c (reload_cse_simplify_set): Use REG_CAN_CHANGE_MODE_P
	instead of CANNOT_CHANGE_MODE_CLASS.
	(reload_cse_simplify_operands): Likewise.
	* reload.c (push_reload): Use targetm.can_change_mode_class
	instead of CANNOT_CHANGE_MODE_CLASS.
	(push_reload): Likewise.  Also use REG_CAN_CHANGE_MODE_P instead of
	REG_CANNOT_CHANGE_MODE_P.
	* config/alpha/alpha.h (CANNOT_CHANGE_MODE_CLASS): Delete.
	* config/alpha/alpha.c (alpha_can_change_mode_class): New function.
	(TARGET_CAN_CHANGE_MODE_CLASS): Redefine.
	* config/arm/arm.h (CANNOT_CHANGE_MODE_CLASS): Delete.
	* config/arm/arm.c (TARGET_CAN_CHANGE_MODE_CLASS): Redefine.
	(arm_can_change_mode_class): New function.
	* config/arm/neon.md: Refer to TARGET_CAN_CHANGE_MODE_CLASS rather
	than CANNOT_CHANGE_MODE_CLASS in comments.
	* config/i386/i386.h (CANNOT_CHANGE_MODE_CLASS): Delete.
	* config/i386/i386-protos.h (ix86_cannot_change_mode_class): Delete.
	* config/i386/i386.c (ix86_cannot_change_mode_class): Replace with...
	(ix86_can_change_mode_class): ...this new function, inverting the
	sense of the return value.
	(TARGET_CAN_CHANGE_MODE_CLASS): Redefine.
	* config/ia64/ia64.h (CANNOT_CHANGE_MODE_CLASS): Delete.
	* config/ia64/ia64.c (TARGET_CAN_CHANGE_MODE_CLASS): Redefine.
	(ia64_can_change_mode_class): New function.
	* config/m32c/m32c.h (CANNOT_CHANGE_MODE_CLASS): Delete.
	* config/m32c/m32c-protos.h (m32c_cannot_change_mode_class): Delete.
	* config/m32c/m32c.c (m32c_cannot_change_mode_class): Replace with...
	(m32c_can_change_mode_class): ...this new function, inverting the
	sense of the return value.
	(TARGET_CAN_CHANGE_MODE_CLASS): Redefine.
	* config/mips/mips.h (CANNOT_CHANGE_MODE_CLASS): Delete.
	* config/mips/mips-protos.h (mips_cannot_change_mode_class): Delete.
	* config/mips/mips.c (mips_cannot_change_mode_class): Replace with...
	(mips_can_change_mode_class): ...this new function, inverting the
	sense of the return value.
	(TARGET_CAN_CHANGE_MODE_CLASS): Redefine.
	* config/msp430/msp430.h (CANNOT_CHANGE_MODE_CLASS): Delete.
	* config/msp430/msp430.c (TARGET_CAN_CHANGE_MODE_CLASS): Redefine.
	(msp430_can_change_mode_class): New function.
	* config/nvptx/nvptx.h (CANNOT_CHANGE_MODE_CLASS): Delete.
	* config/nvptx/nvptx.c (nvptx_can_change_mode_class): New function.
	(TARGET_CAN_CHANGE_MODE_CLASS): Redefine.
	* config/pa/pa32-regs.h (CANNOT_CHANGE_MODE_CLASS): Delete.
	* config/pa/pa64-regs.h (CANNOT_CHANGE_MODE_CLASS): Delete.
	* config/pa/pa-protos.h (pa_cannot_change_mode_class): Delete.
	* config/pa/pa.c (TARGET_CAN_CHANGE_MODE_CLASS): Redefine.
	(pa_cannot_change_mode_class): Replace with...
	(pa_can_change_mode_class): ...this new function, inverting the
	sense of the return value.
	(pa_modes_tieable_p): Refer to TARGET_CAN_CHANGE_MODE_CLASS rather
	than CANNOT_CHANGE_MODE_CLASS in comments.
	* config/pdp11/pdp11.h (CANNOT_CHANGE_MODE_CLASS): Delete.
	* config/pdp11/pdp11-protos.h (pdp11_cannot_change_mode_class): Delete.
	* config/pdp11/pdp11.c (TARGET_CAN_CHANGE_MODE_CLASS): Redefine.
	(pdp11_cannot_change_mode_class): Replace with...
	(pdp11_can_change_mode_class): ...this new function, inverting the
	sense of the return value.
	* config/powerpcspe/powerpcspe.h (CANNOT_CHANGE_MODE_CLASS): Delete.
	* config/powerpcspe/powerpcspe-protos.h
	(rs6000_cannot_change_mode_class_ptr): Delete.
	* config/powerpcspe/powerpcspe.c
	(rs6000_cannot_change_mode_class_ptr): Delete.
	(TARGET_CAN_CHANGE_MODE_CLASS): Redefine.
	(rs6000_option_override_internal): Assign to
	targetm.can_change_mode_class instead of
	rs6000_cannot_change_mode_class_ptr.
	(rs6000_cannot_change_mode_class): Replace with...
	(rs6000_can_change_mode_class): ...this new function, inverting the
	sense of the return value.
	(rs6000_debug_cannot_change_mode_class): Replace with...
	(rs6000_debug_can_change_mode_class): ...this new function.
	* config/riscv/riscv.h (CANNOT_CHANGE_MODE_CLASS): Delete.
	* config/riscv/riscv.c (riscv_can_change_mode_class): New function.
	(TARGET_CAN_CHANGE_MODE_CLASS): Redefine.
	* config/rs6000/rs6000.h (CANNOT_CHANGE_MODE_CLASS): Delete.
	* config/rs6000/rs6000-protos.h (rs6000_cannot_change_mode_class_ptr):
	Delete.
	* config/rs6000/rs6000.c (rs6000_cannot_change_mode_class_ptr): Delete.
	(TARGET_CAN_CHANGE_MODE_CLASS): Redefine.
	(rs6000_option_override_internal): Assign to
	targetm.can_change_mode_class instead of
	rs6000_cannot_change_mode_class_ptr.
	(rs6000_cannot_change_mode_class): Replace with...
	(rs6000_can_change_mode_class): ...this new function, inverting the
	sense of the return value.
	(rs6000_debug_cannot_change_mode_class): Replace with...
	(rs6000_debug_can_change_mode_class): ...this new function.
	* config/s390/s390.h (CANNOT_CHANGE_MODE_CLASS): Delete.
	* config/s390/s390-protos.h (s390_cannot_change_mode_class): Delete.
	* config/s390/s390.c (s390_cannot_change_mode_class): Replace with...
	(s390_can_change_mode_class): ...this new function, inverting the
	sense of the return value.
	(TARGET_CAN_CHANGE_MODE_CLASS): Redefine.
	* config/sh/sh.h (CANNOT_CHANGE_MODE_CLASS): Delete.
	* config/sh/sh-protos.h (sh_cannot_change_mode_class): Delete.
	* config/sh/sh.c (TARGET_CAN_CHANGE_MODE_CLASS): Redefine.
	(sh_cannot_change_mode_class): Replace with...
	(sh_can_change_mode_class): ...this new function, inverting the
	sense of the return value.
	* config/sparc/sparc.h (CANNOT_CHANGE_MODE_CLASS): Delete.
	* config/sparc/sparc.c (TARGET_CAN_CHANGE_MODE_CLASS): Redefine.
	(sparc_can_change_mode_class): New function.
	* config/spu/spu.h (CANNOT_CHANGE_MODE_CLASS): Delete.
	* config/spu/spu.c (spu_can_change_mode_class): New function.
	(TARGET_CAN_CHANGE_MODE_CLASS): Redefine.
	* config/visium/visium.h (CANNOT_CHANGE_MODE_CLASS): Delete.
	* config/visium/visium.c (TARGET_CAN_CHANGE_MODE_CLASS): Redefine.
	(visium_can_change_mode_class): New function.
	* system.h (CANNOT_CHANGE_MODE_CLASS): Poison.

Co-Authored-By: Alan Hayward <alan.hayward@arm.com>
Co-Authored-By: David Sherwood <david.sherwood@arm.com>

From-SVN: r252816
2017-09-15 12:56:34 +00:00
config Enable -flto in all PGO stages for bootstrap-lto-{,noplugin}.mk. 2017-06-19 13:20:20 +00:00
contrib Added Python implementation of mklog. 2017-08-02 21:01:08 +00:00
fixincludes config.gcc (*-*-vxworks*): Set use_gcc_stdint to "provide". 2017-06-12 12:10:12 +00:00
gcc Turn CANNOT_CHANGE_MODE_CLASS into a hook 2017-09-15 12:56:34 +00:00
gnattools re PR ada/81878 (--disable-bootstrap --enable-languages=ada fails) 2017-08-17 13:39:58 +00:00
gotools libgo: update to go1.9 2017-09-14 17:11:35 +00:00
include Add DW_CFA_AARCH64_negate_ra_state to dwarf2.def/h and dwarfnames.c 2017-09-12 16:39:59 +00:00
INSTALL
intl config-ml.in: Remove references to GCJ. 2016-11-15 16:34:02 +00:00
libada re PR ada/80921 (cross compiling fails to build Ada shared libraries) 2017-06-01 10:51:15 +00:00
libatomic Load new scanlang.exp 2017-05-12 09:20:37 +00:00
libbacktrace re PR other/81096 (test case ttest in libbacktrace fails starting with its introduction in r249111) 2017-09-12 17:00:00 +00:00
libcc1 Remove TYPE_METHODS. 2017-07-21 00:27:51 +00:00
libcilkrts os-unix-sysdep.c (__cilkrts_getticks): Adjust preprocessor test for SPARC/Linux. 2017-06-23 17:33:43 +00:00
libcpp Regenerate .pot files. 2017-08-04 23:21:23 +01:00
libdecnumber bid2dpd_dpd2bid.c (_bid_to_dpd32): Fix whitespace. 2017-06-29 11:35:03 -06:00
libffi re PR other/79046 (g++ -print-file-name=plugin uses full version number in path) 2017-01-21 09:47:11 +01:00
libgcc config.host (*-*-vxworks7): Widen scope to vxworks7*. 2017-09-01 13:43:01 +00:00
libgfortran re PR fortran/34640 (ICE when assigning item of a derived-component to a pointer) 2017-09-10 17:02:53 +00:00
libgo libgo: update to go1.9 2017-09-14 17:11:35 +00:00
libgomp Introduce libgomp/testsuite/libgomp.c-c++-common 2017-09-14 21:15:40 +00:00
libhsail-rt Minor BRIG/HSAIL frontend updates and bug fixes: 2017-05-04 05:50:21 +00:00
libiberty [demangler] Fix nested generic lambda 2017-09-15 12:23:57 +00:00
libitm PR c++/80560 - warn on undefined memory operations involving non-trivial types 2017-06-15 21:48:59 -06:00
libmpx * mpxrt/mpxrt-utils.h (__mpxrt_stop): New prototype. 2017-01-30 15:26:24 +01:00
libobjc [2/77] Add an E_ prefix to case statements 2017-08-30 11:08:28 +00:00
liboffloadmic libgomp: Provide prototypes for functions implemented by libgomp plugins 2017-01-31 15:32:58 +01:00
libquadmath re PR libquadmath/81848 (Add PowerPC support to libquadmath) 2017-09-01 22:10:57 +00:00
libsanitizer * include/system/sys/ptrace.h: New file. 2017-08-07 10:32:47 +02:00
libssp ssp.c (__guard_setup): Suppress unused variable warning. 2017-04-02 00:35:58 +00:00
libstdc++-v3 PR libstdc++/81468 constrain std::chrono::time_point constructor 2017-09-13 15:07:44 +01:00
libvtv re PR other/79046 (g++ -print-file-name=plugin uses full version number in path) 2017-01-21 09:47:11 +01:00
lto-plugin re PR lto/81487 ([mingw32] ld.exe: error: asprintf failed) 2017-07-21 15:58:14 +00:00
maintainer-scripts gcc_release (XZ): Default to xz --best. 2017-05-23 23:14:10 +00:00
zlib re PR bootstrap/79771 (in-tree zlib breaks build) 2017-03-14 23:01:23 -06:00
.dir-locals.el
.gitattributes
.gitignore
ABOUT-NLS
ChangeLog * MAINTAINERS: Remove email address of Jim Norris. 2017-09-13 18:12:53 +02:00
ChangeLog.jit
ChangeLog.tree-ssa
compile
config-ml.in config-ml.in: Remove references to GCJ. 2016-11-15 16:34:02 +00:00
config.guess * config.guess: Import latest from upstream. 2017-03-18 18:22:06 +00:00
config.rpath
config.sub * config.sub: Import latest version. 2016-12-29 22:04:53 +11:00
configure configure.ac (target-libffi): Don't disable for AIX. 2017-07-28 14:56:28 -04:00
configure.ac configure.ac (target-libffi): Don't disable for AIX. 2017-07-28 14:56:28 -04:00
COPYING
COPYING.LIB
COPYING.RUNTIME
COPYING3
COPYING3.LIB
depcomp
install-sh
libtool-ldflags
libtool.m4
ltgcc.m4
ltmain.sh
ltoptions.m4
ltsugar.m4
ltversion.m4
lt~obsolete.m4
MAINTAINERS * MAINTAINERS: Remove email address of Jim Norris. 2017-09-13 18:12:53 +02:00
Makefile.def re PR bootstrap/81217 (Makefile:22754: warning: overriding recipe for target 'profiledbootstrap') 2017-06-28 07:54:14 +00:00
Makefile.in re PR bootstrap/81217 (Makefile:22754: warning: overriding recipe for target 'profiledbootstrap') 2017-06-28 07:54:14 +00:00
Makefile.tpl Introduce 4-stages profiledbootstrap to get a better profile. 2017-06-19 13:19:56 +00:00
missing
mkdep
mkinstalldirs
move-if-change
README
symlink-tree
ylwrap

README 

This directory contains the GNU Compiler Collection (GCC).

The GNU Compiler Collection is free software.  See the files whose
names start with COPYING for copying permission.  The manuals, and
some of the runtime libraries, are under different terms; see the
individual source files for details.

The directory INSTALL contains copies of the installation information
as HTML and plain text.  The source of this information is
gcc/doc/install.texi.  The installation information includes details
of what is included in the GCC sources and what files GCC installs.

See the file gcc/doc/gcc.texi (together with other files that it
includes) for usage and porting information.  An online readable
version of the manual is in the files gcc/doc/gcc.info*.

See http://gcc.gnu.org/bugs/ for how to report bugs usefully.

Copyright years on GCC source files may be listed using range
notation, e.g., 1987-2012, indicating that every year in the range,
inclusive, is a copyrightable year that could otherwise be listed
individually.