i960.h (CAN_DEBUG_WITHOUT_FP): Don't define it.
Fri Nov 12 15:14:19 1999 Vladimir Makarov <vmakarov@tofu.to.cygnus.com> * i960.h (CAN_DEBUG_WITHOUT_FP): Don't define it. (FRAME_POINTER_REQUIRED): Don't worry about nonlocal goto. (ELIMINABLE_REGS, CAN_ELIMINATE, INITIAL_ELIMINATION_OFFSET): New. (INITIAL_FRAME_POINTER_OFFSET): Remove it. * i960.c (i960_function_prologue): Don't allocate space for g8-g11 saved on the stack. Output more accurate stack frame statistics into assembler file. From-SVN: r30511
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Vladimir Makarov
Vladimir Makarov
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3ca7341a22
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3 changed files with 52 additions and 24 deletions
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@ -1,3 +1,14 @@
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Fri Nov 12 15:14:19 1999 Vladimir Makarov <vmakarov@tofu.to.cygnus.com>
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* i960.h (CAN_DEBUG_WITHOUT_FP): Don't define it.
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(FRAME_POINTER_REQUIRED): Don't worry about nonlocal goto.
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(ELIMINABLE_REGS, CAN_ELIMINATE, INITIAL_ELIMINATION_OFFSET): New.
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(INITIAL_FRAME_POINTER_OFFSET): Remove it.
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* i960.c (i960_function_prologue): Don't allocate space for g8-g11
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saved on the stack. Output more accurate stack frame statistics
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into assembler file.
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1999-11-12 11:47 -0800 Zack Weinberg <zack@bitmover.com>
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* genextract.c (record_insn_name): New function.
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@ -1333,8 +1333,9 @@ i960_function_prologue (file, size)
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unsigned int size;
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{
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register int i, j, nr;
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int n_iregs = 0;
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int rsize = 0;
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int n_saved_regs = 0;
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int n_remaining_saved_regs;
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int lvar_size;
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int actual_fsize, offset;
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int gnw, lnw;
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struct reg_group *g, *l;
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@ -1357,11 +1358,13 @@ i960_function_prologue (file, size)
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regs[i] = -1;
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/* Count global registers that need saving. */
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if (i < 16)
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n_iregs++;
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n_saved_regs++;
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}
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else
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regs[i] = 0;
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n_remaining_saved_regs = n_saved_regs;
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epilogue_string[0] = '\0';
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if (profile_flag || profile_block_flag)
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@ -1397,7 +1400,7 @@ i960_function_prologue (file, size)
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(g->length == 2) ? "l" : ""),
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reg_names[l->start_reg], reg_names[g->start_reg]);
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strcat (epilogue_string, tmpstr);
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n_iregs -= g->length;
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n_remaining_saved_regs -= g->length;
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for (i = 0; i < g->length; i++)
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{
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regs [i + g->start_reg] = 1;
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@ -1415,11 +1418,7 @@ i960_function_prologue (file, size)
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lnw = i960_split_reg_group (l, lnw, g->length);
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}
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/* N_iregs is now the number of global registers that haven't been saved
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yet. */
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rsize = (n_iregs * 4);
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actual_fsize = compute_frame_size (size) + rsize;
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actual_fsize = compute_frame_size (size);
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#if 0
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/* ??? The 1.2.1 compiler does this also. This is meant to round the frame
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size up to the nearest multiple of 16. I don't know whether this is
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@ -1443,11 +1442,12 @@ i960_function_prologue (file, size)
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/* Take hardware register save area created by the call instruction
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into account, but store them before the argument block area. */
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offset = 64 + actual_fsize - compute_frame_size (0) - rsize;
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lvar_size = actual_fsize - compute_frame_size (0) - n_saved_regs * 4;
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offset = 64 + lvar_size;
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/* Save registers on stack if needed. */
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/* ??? Is it worth to use the same algorithm as one for saving
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global registers in local registers? */
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for (i = 0, j = n_iregs; j > 0 && i < 16; i++)
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for (i = 0, j = n_remaining_saved_regs; j > 0 && i < 16; i++)
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{
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if (regs[i] != -1)
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continue;
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@ -1480,17 +1480,17 @@ i960_function_prologue (file, size)
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offset += nr * 4;
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}
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if (actual_fsize == 0 && size == 0 && rsize == 0)
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if (actual_fsize == 0)
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return;
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fprintf (file, "\t#Prologue stats:\n");
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fprintf (file, "\t# Total Frame Size: %d bytes\n", actual_fsize);
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if (size)
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fprintf (file, "\t# Local Variable Size: %d bytes\n", size);
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if (rsize)
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if (lvar_size)
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fprintf (file, "\t# Local Variable Size: %d bytes\n", lvar_size);
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if (n_saved_regs)
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fprintf (file, "\t# Register Save Size: %d regs, %d bytes\n",
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n_iregs, rsize);
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n_saved_regs, n_saved_regs * 4);
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fprintf (file, "\t#End Prologue#\n");
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}
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@ -94,8 +94,13 @@ Boston, MA 02111-1307, USA. */
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#define LIB_SPEC "%{!nostdlib:-lcg %{p:-lprof}%{pg:-lgprof}\
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%{mka:-lfpg}%{msa:-lfpg}%{mca:-lfpg}%{mcf:-lfpg} -lgnu}"
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/* Show we can debug even without a frame pointer. */
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#define CAN_DEBUG_WITHOUT_FP
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/* Defining the macro shows we can debug even without a frame pointer.
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Actually, we can debug without FP. But defining the macro results in
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that -O means FP elimination. Addressing through sp requires
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negative offset and more one word addressing in the most cases
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(offsets except for 0-4095 require one more word). Therefore we've
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not defined the macro. */
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/*#define CAN_DEBUG_WITHOUT_FP*/
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/* Do leaf procedure and tail call optimizations for -O2 and higher. */
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#define OPTIMIZATION_OPTIONS(LEVEL,SIZE) \
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@ -611,18 +616,30 @@ extern int hard_regno_mode_ok ();
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elimination messes up nonlocal goto sequences. I think this works for other
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targets because they use indirect jumps for the return which disables fp
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elimination. */
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#define FRAME_POINTER_REQUIRED \
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(! leaf_function_p () || current_function_has_nonlocal_goto)
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#define FRAME_POINTER_REQUIRED (! leaf_function_p ())
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/* C statement to store the difference between the frame pointer
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and the stack pointer values immediately after the function prologue.
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/* Definitions for register eliminations.
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This is an array of structures. Each structure initializes one pair
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of eliminable registers. The "from" register number is given first,
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followed by "to". Eliminations of the same "from" register are listed
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in order of preference.. */
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#define ELIMINABLE_REGS {{FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}}
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/* Given FROM and TO register numbers, say whether this elimination is allowed.
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Frame pointer elimination is automatically handled. */
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#define CAN_ELIMINATE(FROM, TO) 1
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/* Define the offset between two registers, one to be eliminated, and
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the other its replacement, at the start of a routine.
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Since the stack grows upward on the i960, this must be a negative number.
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This includes the 64 byte hardware register save area and the size of
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the frame. */
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#define INITIAL_FRAME_POINTER_OFFSET(VAR) \
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do { (VAR) = - (64 + compute_frame_size (get_frame_size ())); } while (0)
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#define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \
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do { (OFFSET) = - (64 + compute_frame_size (get_frame_size ())); } while (0)
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/* Base register for access to arguments of the function. */
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#define ARG_POINTER_REGNUM 14
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