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global trees

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This reorders the common and c++ global tree arrays.  It introduces a
module-specific High Water Mark, below which are the immutable slots
initialized at startup and beyond which are the lazily filled slots
(and a few immutables we need to locate by name lookup anyway).

	gcc/c-family/
	* c-common.h (enum c_tree_index): Reorder to place lazy fields
	after newly-added CTI_MODULE_HWM.
	gcc/cp/
	* cp-tree.h (enum cp_tree_index): Reorder to place lazy fields
	after newly-added CPTI_MODULE_HWM.
This commit is contained in:
Nathan Sidwell 2020-11-17 10:07:25 -08:00
parent c49f56adcb
commit 066c89d1e1
2 changed files with 26 additions and 13 deletions
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8
gcc/c-family/c-common.h
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@ -364,13 +364,17 @@ enum c_tree_index
CTI_DEFAULT_FUNCTION_TYPE,
CTI_NULL,
/* These are not types, but we have to look them up all the time. */
CTI_FUNCTION_NAME_DECL,
CTI_PRETTY_FUNCTION_NAME_DECL,
CTI_C99_FUNCTION_NAME_DECL,
CTI_SAVED_FUNCTION_NAME_DECLS,
CTI_NULL,
CTI_MODULE_HWM,
/* Below here entities change during compilation. */
CTI_SAVED_FUNCTION_NAME_DECLS,
CTI_MAX
};

31
gcc/cp/cp-tree.h
View File

@ -128,12 +128,8 @@ enum cp_tree_index
CPTI_EXPLICIT_VOID_LIST,
CPTI_VTBL_TYPE,
CPTI_VTBL_PTR_TYPE,
CPTI_STD,
CPTI_ABI,
CPTI_GLOBAL,
CPTI_GLOBAL_TYPE,
CPTI_CONST_TYPE_INFO_TYPE,
CPTI_TYPE_INFO_PTR_TYPE,
CPTI_ABORT_FNDECL,
CPTI_AGGR_TAG,
CPTI_CONV_OP_MARKER,
@ -190,8 +186,28 @@ enum cp_tree_index
CPTI_NOEXCEPT_FALSE_SPEC,
CPTI_NOEXCEPT_DEFERRED_SPEC,
CPTI_NULLPTR,
CPTI_NULLPTR_TYPE,
CPTI_ANY_TARG,
CPTI_MODULE_HWM,
/* Nodes after here change during compilation, or should not be in
the module's global tree table. */
/* We must find these via the global namespace. */
CPTI_STD,
CPTI_ABI,
/* These are created at init time, but the library/headers provide
definitions. */
CPTI_ALIGN_TYPE,
CPTI_CONST_TYPE_INFO_TYPE,
CPTI_TYPE_INFO_PTR_TYPE,
CPTI_TERMINATE_FN,
CPTI_CALL_UNEXPECTED_FN,
/* These are lazily inited. */
CPTI_GET_EXCEPTION_PTR_FN,
CPTI_BEGIN_CATCH_FN,
CPTI_END_CATCH_FN,
@ -204,13 +220,6 @@ enum cp_tree_index
CPTI_DSO_HANDLE,
CPTI_DCAST,
CPTI_NULLPTR,
CPTI_NULLPTR_TYPE,
CPTI_ALIGN_TYPE,
CPTI_ANY_TARG,
CPTI_SOURCE_LOCATION_IMPL,
CPTI_FALLBACK_DFLOAT32_TYPE,