don't declare header-defined functions both static and inline

Many functions defined in our headers are declared 'static inline' which
is a C idiom whose use predates our move to C++ as the implementation
language.  But in C++ the inline keyword is more than just a compiler
hint, and is sufficient to give the function the intended semantics.
In fact declaring a function both static and inline is a pessimization
since static effectively disables the desired definition merging
behavior enabled by inline, and is also a source of (harmless) ODR
violations when a static inline function gets called from a non-static
inline one (such as tree_operand_check calling tree_operand_length).

This patch mechanically fixes the vast majority of occurrences of this
anti-pattern throughout the compiler's headers via the command line

  sed -i 's/^static inline/inline/g' gcc/*.h gcc/*/*.h

There's also a manual change to remove the redundant declarations
of is_ivar and lookup_category in gcc/objc/objc-act.cc which would
otherwise conflict with their modified definitions in objc-act.h
(due to the difference in staticness).

Besides fixing some ODR violations, this speeds up stage1 cc1plus by
about 2% and reduces the size of its text segment by 1.5MB.

gcc/ChangeLog:

	* addresses.h: Mechanically drop 'static' from 'static inline'
	functions via s/^static inline/inline/g.
	* asan.h: Likewise.
	* attribs.h: Likewise.
	* basic-block.h: Likewise.
	* bitmap.h: Likewise.
	* cfghooks.h: Likewise.
	* cfgloop.h: Likewise.
	* cgraph.h: Likewise.
	* cselib.h: Likewise.
	* data-streamer.h: Likewise.
	* debug.h: Likewise.
	* df.h: Likewise.
	* diagnostic.h: Likewise.
	* dominance.h: Likewise.
	* dumpfile.h: Likewise.
	* emit-rtl.h: Likewise.
	* except.h: Likewise.
	* expmed.h: Likewise.
	* expr.h: Likewise.
	* fixed-value.h: Likewise.
	* gengtype.h: Likewise.
	* gimple-expr.h: Likewise.
	* gimple-iterator.h: Likewise.
	* gimple-predict.h: Likewise.
	* gimple-range-fold.h: Likewise.
	* gimple-ssa.h: Likewise.
	* gimple.h: Likewise.
	* graphite.h: Likewise.
	* hard-reg-set.h: Likewise.
	* hash-map.h: Likewise.
	* hash-set.h: Likewise.
	* hash-table.h: Likewise.
	* hwint.h: Likewise.
	* input.h: Likewise.
	* insn-addr.h: Likewise.
	* internal-fn.h: Likewise.
	* ipa-fnsummary.h: Likewise.
	* ipa-icf-gimple.h: Likewise.
	* ipa-inline.h: Likewise.
	* ipa-modref.h: Likewise.
	* ipa-prop.h: Likewise.
	* ira-int.h: Likewise.
	* ira.h: Likewise.
	* lra-int.h: Likewise.
	* lra.h: Likewise.
	* lto-streamer.h: Likewise.
	* memmodel.h: Likewise.
	* omp-general.h: Likewise.
	* optabs-query.h: Likewise.
	* optabs.h: Likewise.
	* plugin.h: Likewise.
	* pretty-print.h: Likewise.
	* range.h: Likewise.
	* read-md.h: Likewise.
	* recog.h: Likewise.
	* regs.h: Likewise.
	* rtl-iter.h: Likewise.
	* rtl.h: Likewise.
	* sbitmap.h: Likewise.
	* sched-int.h: Likewise.
	* sel-sched-ir.h: Likewise.
	* sese.h: Likewise.
	* sparseset.h: Likewise.
	* ssa-iterators.h: Likewise.
	* system.h: Likewise.
	* target-globals.h: Likewise.
	* target.h: Likewise.
	* timevar.h: Likewise.
	* tree-chrec.h: Likewise.
	* tree-data-ref.h: Likewise.
	* tree-iterator.h: Likewise.
	* tree-outof-ssa.h: Likewise.
	* tree-phinodes.h: Likewise.
	* tree-scalar-evolution.h: Likewise.
	* tree-sra.h: Likewise.
	* tree-ssa-alias.h: Likewise.
	* tree-ssa-live.h: Likewise.
	* tree-ssa-loop-manip.h: Likewise.
	* tree-ssa-loop.h: Likewise.
	* tree-ssa-operands.h: Likewise.
	* tree-ssa-propagate.h: Likewise.
	* tree-ssa-sccvn.h: Likewise.
	* tree-ssa.h: Likewise.
	* tree-ssanames.h: Likewise.
	* tree-streamer.h: Likewise.
	* tree-switch-conversion.h: Likewise.
	* tree-vectorizer.h: Likewise.
	* tree.h: Likewise.
	* wide-int.h: Likewise.

gcc/c-family/ChangeLog:

	* c-common.h: Mechanically drop static from static inline
	functions via s/^static inline/inline/g.

gcc/c/ChangeLog:

	* c-parser.h: Mechanically drop static from static inline
	functions via s/^static inline/inline/g.

gcc/cp/ChangeLog:

	* cp-tree.h: Mechanically drop static from static inline
	functions via s/^static inline/inline/g.

gcc/fortran/ChangeLog:

	* gfortran.h: Mechanically drop static from static inline
	functions via s/^static inline/inline/g.

gcc/jit/ChangeLog:

	* jit-dejagnu.h: Mechanically drop static from static inline
	functions via s/^static inline/inline/g.
	* jit-recording.h: Likewise.

gcc/objc/ChangeLog:

	* objc-act.h: Mechanically drop static from static inline
	functions via s/^static inline/inline/g.
	* objc-map.h: Likewise.
	* objc-act.cc: Remove the redundant redeclarations of is_ivar
	and lookup_category.

1 files changed, 2 insertions, 2 deletions

diff --git a/gcc/cselib.h b/gcc/cselib.h
index 12e54a43d21..e2fa8e8c2c1 100644
--- a/gcc/cselib.h
+++ b/gcc/cselib.h
@@ -113,7 +113,7 @@ extern void dump_cselib_table (FILE *);
 /* Return the canonical value for VAL, following the equivalence chain
    towards the earliest (== lowest uid) equivalent value.  */
 
-static inline cselib_val *
+inline cselib_val *
 canonical_cselib_val (cselib_val *val)
 {
   cselib_val *canon;
@@ -131,7 +131,7 @@ canonical_cselib_val (cselib_val *val)
 /* Return nonzero if we can prove that X and Y contain the same value, taking
    our gathered information into account.  */
 
-static inline int
+inline int
 rtx_equal_for_cselib_p (rtx x, rtx y)
 {
   if (x == y)