OpenE2K/gcc
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

ia64.c (ia64_emit_probe_stack_range): Adjust.

Browse Source 
* config/ia64/ia64.c (ia64_emit_probe_stack_range): Adjust.
	(output_probe_stack_range): Rotate the loop and simplify.

From-SVN: r231398
This commit is contained in:
Eric Botcazou 2015-12-08 08:55:51 +00:00 committed by Eric Botcazou
parent e8e1c90f3f
commit 73866e0dfa
2 changed files with 21 additions and 18 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
gcc/ChangeLog
View File

@ -1,3 +1,8 @@
2015-12-08 Eric Botcazou <ebotcazou@adacore.com>
* config/ia64/ia64.c (ia64_emit_probe_stack_range): Adjust.
(output_probe_stack_range): Rotate the loop and simplify.
2015-12-08 Uros Bizjak <ubizjak@gmail.com>
* config/i386/i386.c (ix86_emit_swsqrtsf): Cleanup

34
gcc/config/ia64/ia64.c
View File

@ -3293,7 +3293,7 @@ ia64_emit_probe_stack_range (HOST_WIDE_INT first, HOST_WIDE_INT size,
else if (size <= PROBE_INTERVAL)
emit_stack_probe (r2);
/* The run-time loop is made up of 8 insns in the generic case while this
/* The run-time loop is made up of 9 insns in the generic case while this
compile-time loop is made up of 5+2*(n-2) insns for n # of intervals. */
else if (size <= 4 * PROBE_INTERVAL)
{
@ -3356,11 +3356,12 @@ ia64_emit_probe_stack_range (HOST_WIDE_INT first, HOST_WIDE_INT size,
/* Step 3: the loop
while (TEST_ADDR != LAST_ADDR)
do
{
TEST_ADDR = TEST_ADDR + PROBE_INTERVAL
probe at TEST_ADDR
}
while (TEST_ADDR != LAST_ADDR)
probes at FIRST + N * PROBE_INTERVAL for values of N from 1
until it is equal to ROUNDED_SIZE. */
@ -3391,36 +3392,33 @@ const char *
output_probe_stack_range (rtx reg1, rtx reg2)
{
static int labelno = 0;
char loop_lab[32], end_lab[32];
char loop_lab[32];
rtx xops[3];
ASM_GENERATE_INTERNAL_LABEL (loop_lab, "LPSRL", labelno);
ASM_GENERATE_INTERNAL_LABEL (end_lab, "LPSRE", labelno++);
ASM_GENERATE_INTERNAL_LABEL (loop_lab, "LPSRL", labelno++);
/* Loop. */
ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, loop_lab);
/* Jump to END_LAB if TEST_ADDR == LAST_ADDR. */
xops[0] = reg1;
xops[1] = reg2;
xops[2] = gen_rtx_REG (BImode, PR_REG (6));
output_asm_insn ("cmp.eq %2, %I2 = %0, %1", xops);
fprintf (asm_out_file, "\t(%s) br.cond.dpnt ", reg_names [REGNO (xops[2])]);
assemble_name_raw (asm_out_file, end_lab);
fputc ('\n', asm_out_file);
/* TEST_ADDR = TEST_ADDR + PROBE_INTERVAL. */
xops[0] = reg1;
xops[1] = GEN_INT (-PROBE_INTERVAL);
output_asm_insn ("addl %0 = %1, %0", xops);
fputs ("\t;;\n", asm_out_file);
/* Probe at TEST_ADDR and branch. */
/* Probe at TEST_ADDR. */
output_asm_insn ("probe.w.fault %0, 0", xops);
fprintf (asm_out_file, "\tbr ");
/* Test if TEST_ADDR == LAST_ADDR. */
xops[1] = reg2;
xops[2] = gen_rtx_REG (BImode, PR_REG (6));
output_asm_insn ("cmp.eq %2, %I2 = %0, %1", xops);
/* Branch. */
fprintf (asm_out_file, "\t(%s) br.cond.dpnt ", reg_names [PR_REG (7)]);
assemble_name_raw (asm_out_file, loop_lab);
fputc ('\n', asm_out_file);
ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, end_lab);
return "";
}