diff options
Diffstat (limited to 'meta-xilinx/meta-xilinx-bsp/recipes-microblaze/gcc/gcc-8/0020-Patch-microblaze-Reducing-Stack-space-for-arguments.patch')
| -rw-r--r-- | meta-xilinx/meta-xilinx-bsp/recipes-microblaze/gcc/gcc-8/0020-Patch-microblaze-Reducing-Stack-space-for-arguments.patch | 206 |
1 files changed, 0 insertions, 206 deletions
diff --git a/meta-xilinx/meta-xilinx-bsp/recipes-microblaze/gcc/gcc-8/0020-Patch-microblaze-Reducing-Stack-space-for-arguments.patch b/meta-xilinx/meta-xilinx-bsp/recipes-microblaze/gcc/gcc-8/0020-Patch-microblaze-Reducing-Stack-space-for-arguments.patch deleted file mode 100644 index 6e07ac4fc..000000000 --- a/meta-xilinx/meta-xilinx-bsp/recipes-microblaze/gcc/gcc-8/0020-Patch-microblaze-Reducing-Stack-space-for-arguments.patch +++ /dev/null @@ -1,206 +0,0 @@ -From 0cc6aabbd3f7b331c3995f11efec545499297358 Mon Sep 17 00:00:00 2001 -From: Mahesh Bodapati <mbodapat@xilinx.com> -Date: Tue, 17 Jan 2017 16:42:44 +0530 -Subject: [PATCH 20/54] [Patch, microblaze]: Reducing Stack space for arguments - Currently in Microblaze target stack space for arguments in register is being - allocated even if there are no arguments in the function. This patch will - optimize the extra 24 bytes that are being allocated. - -Signed-off-by :Nagaraju Mekala <nmekala@xilix.com> - :Ajit Agarwal <ajitkum@xilinx.com> - -ChangeLog: -2015-04-17 Nagaraju Mekala <nmekala@xilix.com> - Ajit Agarwal <ajitkum@xilinx.com> - - *microblaze.c (microblaze_parm_needs_stack, microblaze_function_parms_need_stack): New - *microblaze.c (REG_PARM_STACK_SPACE): Modify ---- - gcc/config/microblaze/microblaze-protos.h | 1 + - gcc/config/microblaze/microblaze.c | 134 +++++++++++++++++++++++++++++- - gcc/config/microblaze/microblaze.h | 4 +- - 3 files changed, 136 insertions(+), 3 deletions(-) - -diff --git a/gcc/config/microblaze/microblaze-protos.h b/gcc/config/microblaze/microblaze-protos.h -index 4cbba0c..f8a56f7 100644 ---- a/gcc/config/microblaze/microblaze-protos.h -+++ b/gcc/config/microblaze/microblaze-protos.h -@@ -58,6 +58,7 @@ extern int symbol_mentioned_p (rtx); - extern int label_mentioned_p (rtx); - extern bool microblaze_cannot_force_const_mem (machine_mode, rtx); - extern void microblaze_eh_return (rtx op0); -+int microblaze_reg_parm_stack_space(tree fun); - #endif /* RTX_CODE */ - - /* Declare functions in microblaze-c.c. */ -diff --git a/gcc/config/microblaze/microblaze.c b/gcc/config/microblaze/microblaze.c -index 53b44df..0dec362 100644 ---- a/gcc/config/microblaze/microblaze.c -+++ b/gcc/config/microblaze/microblaze.c -@@ -1989,6 +1989,138 @@ microblaze_must_save_register (int regno) - return 0; - } - -+static bool -+microblaze_parm_needs_stack (cumulative_args_t args_so_far, tree type) -+{ -+ enum machine_mode mode; -+ int unsignedp; -+ rtx entry_parm; -+ -+ /* Catch errors. */ -+ if (type == NULL || type == error_mark_node) -+ return true; -+ -+ if (TREE_CODE (type) == POINTER_TYPE) -+ return true; -+ -+ /* Handle types with no storage requirement. */ -+ if (TYPE_MODE (type) == VOIDmode) -+ return false; -+ -+ /* Handle complex types. */ -+ if (TREE_CODE (type) == COMPLEX_TYPE) -+ return (microblaze_parm_needs_stack (args_so_far, TREE_TYPE (type)) -+ || microblaze_parm_needs_stack (args_so_far, TREE_TYPE (type))); -+ -+ /* Handle transparent aggregates. */ -+ if ((TREE_CODE (type) == UNION_TYPE || TREE_CODE (type) == RECORD_TYPE) -+ && TYPE_TRANSPARENT_AGGR (type)) -+ type = TREE_TYPE (first_field (type)); -+ -+ /* See if this arg was passed by invisible reference. */ -+ if (pass_by_reference (get_cumulative_args (args_so_far), -+ TYPE_MODE (type), type, true)) -+ type = build_pointer_type (type); -+ -+ /* Find mode as it is passed by the ABI. */ -+ unsignedp = TYPE_UNSIGNED (type); -+ mode = promote_mode (type, TYPE_MODE (type), &unsignedp); -+ -+/* If there is no incoming register, we need a stack. */ -+ entry_parm = microblaze_function_arg (args_so_far, mode, type, true); -+ if (entry_parm == NULL) -+ return true; -+ -+ /* Likewise if we need to pass both in registers and on the stack. */ -+ if (GET_CODE (entry_parm) == PARALLEL -+ && XEXP (XVECEXP (entry_parm, 0, 0), 0) == NULL_RTX) -+ return true; -+ -+ /* Also true if we're partially in registers and partially not. */ -+ if (function_arg_partial_bytes (args_so_far, mode, type, true) != 0) -+ return true; -+ -+ /* Update info on where next arg arrives in registers. */ -+ microblaze_function_arg_advance (args_so_far, mode, type, true); -+ return false; -+ } -+ -+static bool -+microblaze_function_parms_need_stack (tree fun, bool incoming) -+{ -+ tree fntype, result; -+ CUMULATIVE_ARGS args_so_far_v; -+ cumulative_args_t args_so_far; -+ int num_of_args = 0; -+ -+ /* Must be a libcall, all of which only use reg parms. */ -+ if (!fun) -+ return true; -+ -+ fntype = fun; -+ if (!TYPE_P (fun)) -+ fntype = TREE_TYPE (fun); -+ -+ /* Varargs functions need the parameter save area. */ -+ if ((!incoming && !prototype_p (fntype)) || stdarg_p (fntype)) -+ return true; -+ -+ INIT_CUMULATIVE_ARGS(args_so_far_v, fntype, NULL_RTX,0,0); -+ args_so_far = pack_cumulative_args (&args_so_far_v); -+ -+ /* When incoming, we will have been passed the function decl. -+ * It is necessary to use the decl to handle K&R style functions, -+ * where TYPE_ARG_TYPES may not be available. */ -+ if (incoming) -+ { -+ gcc_assert (DECL_P (fun)); -+ result = DECL_RESULT (fun); -+ } -+ else -+ result = TREE_TYPE (fntype); -+ -+ if (result && aggregate_value_p (result, fntype)) -+ { -+ if (!TYPE_P (result)) -+ result = build_pointer_type (result); -+ microblaze_parm_needs_stack (args_so_far, result); -+ } -+ -+ if (incoming) -+ { -+ tree parm; -+ for (parm = DECL_ARGUMENTS (fun); -+ parm && parm != void_list_node; -+ parm = TREE_CHAIN (parm)) -+ if (microblaze_parm_needs_stack (args_so_far, TREE_TYPE (parm))) -+ return true; -+ } -+ else -+ { -+ function_args_iterator args_iter; -+ tree arg_type; -+ -+ FOREACH_FUNCTION_ARGS (fntype, arg_type, args_iter) -+ { -+ num_of_args++; -+ if (microblaze_parm_needs_stack (args_so_far, arg_type)) -+ return true; -+ } -+ } -+ -+ if (num_of_args > 3) return true; -+ -+ return false; -+} -+ -+int microblaze_reg_parm_stack_space(tree fun) -+{ -+ if (microblaze_function_parms_need_stack (fun,false)) -+ return MAX_ARGS_IN_REGISTERS * UNITS_PER_WORD; -+ else -+ return 0; -+} -+ - /* Return the bytes needed to compute the frame pointer from the current - stack pointer. - -@@ -3298,7 +3430,7 @@ microblaze_asm_output_mi_thunk (FILE *file, tree thunk_fndecl ATTRIBUTE_UNUSED, - emit_insn (gen_indirect_jump (temp2)); - - /* Run just enough of rest_of_compilation. This sequence was -- "borrowed" from rs6000.c. */ -+ "borrowed" from microblaze.c. */ - insn = get_insns (); - shorten_branches (insn); - final_start_function (insn, file, 1); -diff --git a/gcc/config/microblaze/microblaze.h b/gcc/config/microblaze/microblaze.h -index 88e0351..9f74ec8 100644 ---- a/gcc/config/microblaze/microblaze.h -+++ b/gcc/config/microblaze/microblaze.h -@@ -434,9 +434,9 @@ extern struct microblaze_frame_info current_frame_info; - - #define ARG_POINTER_CFA_OFFSET(FNDECL) 0 - --#define REG_PARM_STACK_SPACE(FNDECL) (MAX_ARGS_IN_REGISTERS * UNITS_PER_WORD) -+#define REG_PARM_STACK_SPACE(FNDECL) microblaze_reg_parm_stack_space(FNDECL) - --#define OUTGOING_REG_PARM_STACK_SPACE(FNTYPE) 1 -+#define OUTGOING_REG_PARM_STACK_SPACE(FNTYPE) 1 - - #define STACK_BOUNDARY 32 - --- -2.7.4 - |