diff options
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 7 | ||||
| -rw-r--r-- | gcc/reload.c | 22 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.target/avr/pr71627.c | 14 |
4 files changed, 36 insertions, 12 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 66f78be..8f7a1b0 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,10 @@ +2016-10-21 Senthil Kumar Selvaraj <senthil_kumar.selvaraj@atmel.com> + + PR target/71627 + * reload.c (find_valid_class_1): Allow regclass if atleast one + regno in regclass is ok. Compute and use rclass size based on + actually available regnos for mode in rclass. + 2016-10-21 Eric Botcazou <ebotcazou@adacore.com> * config/sparc/sparc-modes.def (CCV): New. diff --git a/gcc/reload.c b/gcc/reload.c index 9a859e5..6517552 100644 --- a/gcc/reload.c +++ b/gcc/reload.c @@ -715,25 +715,23 @@ find_valid_class_1 (machine_mode outer ATTRIBUTE_UNUSED, for (rclass = 1; rclass < N_REG_CLASSES; rclass++) { - int bad = 0; - for (regno = 0; regno < FIRST_PSEUDO_REGISTER && !bad; regno++) - { - if (in_hard_reg_set_p (reg_class_contents[rclass], mode, regno) - && !HARD_REGNO_MODE_OK (regno, mode)) - bad = 1; - } - - if (bad) - continue; + unsigned int computed_rclass_size = 0; + + for (regno = 0; regno < FIRST_PSEUDO_REGISTER; regno++) + { + if (in_hard_reg_set_p (reg_class_contents[rclass], mode, regno) + && (HARD_REGNO_MODE_OK (regno, mode))) + computed_rclass_size++; + } cost = register_move_cost (outer, (enum reg_class) rclass, dest_class); - if ((reg_class_size[rclass] > best_size + if ((computed_rclass_size > best_size && (best_cost < 0 || best_cost >= cost)) || best_cost > cost) { best_class = (enum reg_class) rclass; - best_size = reg_class_size[rclass]; + best_size = computed_rclass_size; best_cost = register_move_cost (outer, (enum reg_class) rclass, dest_class); } diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 0e32435..771daa3 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2016-10-21 Senthil Kumar Selvaraj <senthil_kumar.selvaraj@atmel.com> + + PR target/71627 + * gcc.target/avr/pr71627.c: New test + 2016-10-21 Eric Botcazou <ebotcazou@adacore.com> * gcc.target/sparc/overflow-1.c: New test. diff --git a/gcc/testsuite/gcc.target/avr/pr71627.c b/gcc/testsuite/gcc.target/avr/pr71627.c new file mode 100644 index 0000000..eaef3d2 --- /dev/null +++ b/gcc/testsuite/gcc.target/avr/pr71627.c @@ -0,0 +1,14 @@ +/* { dg-do compile } */ +/* { dg-options "-O1" } */ + + +extern volatile __memx const long a, b, c, d, e, f; +extern volatile long result; + +extern void vfunc (const char*, ...); + +void foo (void) +{ + result = a + b + c + d + e + f; + vfunc ("text", a, b, c, d, e, f, result); +} |