gcc-plugins: remove support for GCC 4.9 and older

The minimum GCC version has been bumped to 5.1, so we can get rid of all
the compatibility code for anything older than that.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20210922182632.633394-1-ardb@kernel.org

diff --git a/scripts/gcc-plugins/gcc-common.h b/scripts/gcc-plugins/gcc-common.h
index 0c087614fc3e412f9f868d7d7386743210320b23..62bf1c07b8bfb18e3a85709a8d70608f6f8b617a 100644 (file)
--- a/scripts/gcc-plugins/gcc-common.h
+++ b/scripts/gcc-plugins/gcc-common.h
@@ -27,9 +27,7 @@
 #include "except.h"
 #include "function.h"
 #include "toplev.h"
-#if BUILDING_GCC_VERSION >= 5000
 #include "expr.h"
-#endif
 #include "basic-block.h"
 #include "intl.h"
 #include "ggc.h"
@@ -39,11 +37,7 @@
 #include "params.h"
 #endif
 
-#if BUILDING_GCC_VERSION <= 4009
-#include "pointer-set.h"
-#else
 #include "hash-map.h"
-#endif
 
 #if BUILDING_GCC_VERSION >= 7000
 #include "memmodel.h"
@@ -99,9 +93,7 @@
 #include "gimple-ssa.h"
 #include "ssa-iterators.h"
 
-#if BUILDING_GCC_VERSION >= 5000
 #include "builtins.h"
-#endif
 
 /* missing from basic_block.h... */
 void debug_dominance_info(enum cdi_direction dir);
@@ -152,125 +144,6 @@ struct register_pass_info NAME##_pass_info = {    \
 #define TODO_dump_func 0
 #define TODO_dump_cgraph 0
 
-#if BUILDING_GCC_VERSION <= 4009
-#define TODO_verify_il 0
-#define AVAIL_INTERPOSABLE AVAIL_OVERWRITABLE
-
-#define section_name_prefix LTO_SECTION_NAME_PREFIX
-#define fatal_error(loc, gmsgid, ...) fatal_error((gmsgid), __VA_ARGS__)
-
-rtx emit_move_insn(rtx x, rtx y);
-
-typedef struct rtx_def rtx_insn;
-
-static inline const char *get_decl_section_name(const_tree decl)
-{
-       if (DECL_SECTION_NAME(decl) == NULL_TREE)
-               return NULL;
-
-       return TREE_STRING_POINTER(DECL_SECTION_NAME(decl));
-}
-
-static inline void set_decl_section_name(tree node, const char *value)
-{
-       if (value)
-               DECL_SECTION_NAME(node) = build_string(strlen(value) + 1, value);
-       else
-               DECL_SECTION_NAME(node) = NULL;
-}
-#endif
-
-#if BUILDING_GCC_VERSION == 4009
-typedef struct gimple_statement_asm gasm;
-typedef struct gimple_statement_base gassign;
-typedef struct gimple_statement_call gcall;
-typedef struct gimple_statement_base gcond;
-typedef struct gimple_statement_base gdebug;
-typedef struct gimple_statement_base ggoto;
-typedef struct gimple_statement_phi gphi;
-typedef struct gimple_statement_base greturn;
-
-static inline gasm *as_a_gasm(gimple stmt)
-{
-       return as_a<gasm>(stmt);
-}
-
-static inline const gasm *as_a_const_gasm(const_gimple stmt)
-{
-       return as_a<const gasm>(stmt);
-}
-
-static inline gassign *as_a_gassign(gimple stmt)
-{
-       return stmt;
-}
-
-static inline const gassign *as_a_const_gassign(const_gimple stmt)
-{
-       return stmt;
-}
-
-static inline gcall *as_a_gcall(gimple stmt)
-{
-       return as_a<gcall>(stmt);
-}
-
-static inline const gcall *as_a_const_gcall(const_gimple stmt)
-{
-       return as_a<const gcall>(stmt);
-}
-
-static inline gcond *as_a_gcond(gimple stmt)
-{
-       return stmt;
-}
-
-static inline const gcond *as_a_const_gcond(const_gimple stmt)
-{
-       return stmt;
-}
-
-static inline gdebug *as_a_gdebug(gimple stmt)
-{
-       return stmt;
-}
-
-static inline const gdebug *as_a_const_gdebug(const_gimple stmt)
-{
-       return stmt;
-}
-
-static inline ggoto *as_a_ggoto(gimple stmt)
-{
-       return stmt;
-}
-
-static inline const ggoto *as_a_const_ggoto(const_gimple stmt)
-{
-       return stmt;
-}
-
-static inline gphi *as_a_gphi(gimple stmt)
-{
-       return as_a<gphi>(stmt);
-}
-
-static inline const gphi *as_a_const_gphi(const_gimple stmt)
-{
-       return as_a<const gphi>(stmt);
-}
-
-static inline greturn *as_a_greturn(gimple stmt)
-{
-       return stmt;
-}
-
-static inline const greturn *as_a_const_greturn(const_gimple stmt)
-{
-       return stmt;
-}
-#endif
-
 #define TODO_ggc_collect 0
 #define NODE_SYMBOL(node) (node)
 #define NODE_DECL(node) (node)->decl
@@ -282,7 +155,7 @@ static inline opt_pass *get_pass_for_id(int id)
        return g->get_passes()->get_pass_for_id(id);
 }
 
-#if BUILDING_GCC_VERSION >= 5000 && BUILDING_GCC_VERSION < 6000
+#if BUILDING_GCC_VERSION < 6000
 /* gimple related */
 template <>
 template <>
@@ -292,7 +165,6 @@ inline bool is_a_helper<const gassign *>::test(const_gimple gs)
 }
 #endif
 
-#if BUILDING_GCC_VERSION >= 5000
 #define TODO_verify_ssa TODO_verify_il
 #define TODO_verify_flow TODO_verify_il
 #define TODO_verify_stmts TODO_verify_il
@@ -533,7 +405,6 @@ static inline void ipa_remove_stmt_references(symtab_node *referring_node, gimpl
 {
        referring_node->remove_stmt_references(stmt);
 }
-#endif
 
 #if BUILDING_GCC_VERSION < 6000
 #define get_inner_reference(exp, pbitsize, pbitpos, poffset, pmode, punsignedp, preversep, pvolatilep, keep_aligning)  \

diff --git a/scripts/gcc-plugins/gcc-generate-gimple-pass.h b/scripts/gcc-plugins/gcc-generate-gimple-pass.h
index 51780828734e422c771fdaf249d5dcbd15d3bcf1..503c07496396371a59e619de04d05c481ebb75ca 100644 (file)
--- a/scripts/gcc-plugins/gcc-generate-gimple-pass.h
+++ b/scripts/gcc-plugins/gcc-generate-gimple-pass.h
@@ -78,17 +78,6 @@ static const pass_data _PASS_NAME_PASS_DATA = {
                .type                   = GIMPLE_PASS,
                .name                   = _PASS_NAME_NAME,
                .optinfo_flags          = OPTGROUP_NONE,
-#if BUILDING_GCC_VERSION >= 5000
-#elif BUILDING_GCC_VERSION == 4009
-               .has_gate               = _HAS_GATE,
-               .has_execute            = _HAS_EXECUTE,
-#else
-               .gate                   = _GATE,
-               .execute                = _EXECUTE,
-               .sub                    = NULL,
-               .next                   = NULL,
-               .static_pass_number     = 0,
-#endif
                .tv_id                  = TV_NONE,
                .properties_required    = PROPERTIES_REQUIRED,
                .properties_provided    = PROPERTIES_PROVIDED,
@@ -102,21 +91,13 @@ public:
        _PASS_NAME_PASS() : gimple_opt_pass(_PASS_NAME_PASS_DATA, g) {}
 
 #ifndef NO_GATE
-#if BUILDING_GCC_VERSION >= 5000
        virtual bool gate(function *) { return _GATE(); }
-#else
-       virtual bool gate(void) { return _GATE(); }
-#endif
 #endif
 
        virtual opt_pass * clone () { return new _PASS_NAME_PASS(); }
 
 #ifndef NO_EXECUTE
-#if BUILDING_GCC_VERSION >= 5000
        virtual unsigned int execute(function *) { return _EXECUTE(); }
-#else
-       virtual unsigned int execute(void) { return _EXECUTE(); }
-#endif
 };
 }
 

diff --git a/scripts/gcc-plugins/gcc-generate-ipa-pass.h b/scripts/gcc-plugins/gcc-generate-ipa-pass.h
index c34ffec035bfa7db4c7029c4bf1d84bbaa668e76..1e7f064e8f6e6d4154548b61790ce9279ead855e 100644 (file)
--- a/scripts/gcc-plugins/gcc-generate-ipa-pass.h
+++ b/scripts/gcc-plugins/gcc-generate-ipa-pass.h
@@ -146,17 +146,6 @@ static const pass_data _PASS_NAME_PASS_DATA = {
                .type                   = IPA_PASS,
                .name                   = _PASS_NAME_NAME,
                .optinfo_flags          = OPTGROUP_NONE,
-#if BUILDING_GCC_VERSION >= 5000
-#elif BUILDING_GCC_VERSION == 4009
-               .has_gate               = _HAS_GATE,
-               .has_execute            = _HAS_EXECUTE,
-#else
-               .gate                   = _GATE,
-               .execute                = _EXECUTE,
-               .sub                    = NULL,
-               .next                   = NULL,
-               .static_pass_number     = 0,
-#endif
                .tv_id                  = TV_NONE,
                .properties_required    = PROPERTIES_REQUIRED,
                .properties_provided    = PROPERTIES_PROVIDED,
@@ -180,20 +169,12 @@ public:
                         _VARIABLE_TRANSFORM) {}
 
 #ifndef NO_GATE
-#if BUILDING_GCC_VERSION >= 5000
        virtual bool gate(function *) { return _GATE(); }
-#else
-       virtual bool gate(void) { return _GATE(); }
-#endif
 
        virtual opt_pass *clone() { return new _PASS_NAME_PASS(); }
 
 #ifndef NO_EXECUTE
-#if BUILDING_GCC_VERSION >= 5000
        virtual unsigned int execute(function *) { return _EXECUTE(); }
-#else
-       virtual unsigned int execute(void) { return _EXECUTE(); }
-#endif
 #endif
 };
 }

diff --git a/scripts/gcc-plugins/gcc-generate-rtl-pass.h b/scripts/gcc-plugins/gcc-generate-rtl-pass.h
index d14614f4b1393446bf04e811faea591e7589daf5..7cd46e8d5049a4a7b21ce61fd7e73fe0495bc428 100644 (file)
--- a/scripts/gcc-plugins/gcc-generate-rtl-pass.h
+++ b/scripts/gcc-plugins/gcc-generate-rtl-pass.h
@@ -78,17 +78,6 @@ static const pass_data _PASS_NAME_PASS_DATA = {
                .type                   = RTL_PASS,
                .name                   = _PASS_NAME_NAME,
                .optinfo_flags          = OPTGROUP_NONE,
-#if BUILDING_GCC_VERSION >= 5000
-#elif BUILDING_GCC_VERSION == 4009
-               .has_gate               = _HAS_GATE,
-               .has_execute            = _HAS_EXECUTE,
-#else
-               .gate                   = _GATE,
-               .execute                = _EXECUTE,
-               .sub                    = NULL,
-               .next                   = NULL,
-               .static_pass_number     = 0,
-#endif
                .tv_id                  = TV_NONE,
                .properties_required    = PROPERTIES_REQUIRED,
                .properties_provided    = PROPERTIES_PROVIDED,
@@ -102,21 +91,13 @@ public:
        _PASS_NAME_PASS() : rtl_opt_pass(_PASS_NAME_PASS_DATA, g) {}
 
 #ifndef NO_GATE
-#if BUILDING_GCC_VERSION >= 5000
        virtual bool gate(function *) { return _GATE(); }
-#else
-       virtual bool gate(void) { return _GATE(); }
-#endif
 #endif
 
        virtual opt_pass *clone() { return new _PASS_NAME_PASS(); }
 
 #ifndef NO_EXECUTE
-#if BUILDING_GCC_VERSION >= 5000
        virtual unsigned int execute(function *) { return _EXECUTE(); }
-#else
-       virtual unsigned int execute(void) { return _EXECUTE(); }
-#endif
 #endif
 };
 }

diff --git a/scripts/gcc-plugins/gcc-generate-simple_ipa-pass.h b/scripts/gcc-plugins/gcc-generate-simple_ipa-pass.h
index ef6f4c2cb6fa8c905daa357afee6fa6548312027..33093ccc947a55ed06557884cc367d6823400bc9 100644 (file)
--- a/scripts/gcc-plugins/gcc-generate-simple_ipa-pass.h
+++ b/scripts/gcc-plugins/gcc-generate-simple_ipa-pass.h
@@ -78,17 +78,6 @@ static const pass_data _PASS_NAME_PASS_DATA = {
                .type                   = SIMPLE_IPA_PASS,
                .name                   = _PASS_NAME_NAME,
                .optinfo_flags          = OPTGROUP_NONE,
-#if BUILDING_GCC_VERSION >= 5000
-#elif BUILDING_GCC_VERSION == 4009
-               .has_gate               = _HAS_GATE,
-               .has_execute            = _HAS_EXECUTE,
-#else
-               .gate                   = _GATE,
-               .execute                = _EXECUTE,
-               .sub                    = NULL,
-               .next                   = NULL,
-               .static_pass_number     = 0,
-#endif
                .tv_id                  = TV_NONE,
                .properties_required    = PROPERTIES_REQUIRED,
                .properties_provided    = PROPERTIES_PROVIDED,
@@ -102,21 +91,13 @@ public:
        _PASS_NAME_PASS() : simple_ipa_opt_pass(_PASS_NAME_PASS_DATA, g) {}
 
 #ifndef NO_GATE
-#if BUILDING_GCC_VERSION >= 5000
        virtual bool gate(function *) { return _GATE(); }
-#else
-       virtual bool gate(void) { return _GATE(); }
-#endif
 #endif
 
        virtual opt_pass *clone() { return new _PASS_NAME_PASS(); }
 
 #ifndef NO_EXECUTE
-#if BUILDING_GCC_VERSION >= 5000
        virtual unsigned int execute(function *) { return _EXECUTE(); }
-#else
-       virtual unsigned int execute(void) { return _EXECUTE(); }
-#endif
 #endif
 };
 }

diff --git a/scripts/gcc-plugins/structleak_plugin.c b/scripts/gcc-plugins/structleak_plugin.c
index d7190e443a14eb503564974b743995c0189e0fd9..74e319288389d3ca53fd87cc62d418fe589458c1 100644 (file)
--- a/scripts/gcc-plugins/structleak_plugin.c
+++ b/scripts/gcc-plugins/structleak_plugin.c
@@ -103,10 +103,8 @@ static void finish_type(void *event_data, void *data)
        if (type == NULL_TREE || type == error_mark_node)
                return;
 
-#if BUILDING_GCC_VERSION >= 5000
        if (TREE_CODE(type) == ENUMERAL_TYPE)
                return;
-#endif
 
        if (TYPE_USERSPACE(type))
                return;