diff options
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 7 | ||||
| -rw-r--r-- | gcc/ira-conflicts.c | 32 | ||||
| -rw-r--r-- | gcc/ira-int.h | 2 |
3 files changed, 26 insertions, 15 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 79aff5d..e59756b 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,10 @@ +2009-03-12 Vladimir Makarov <vmakarov@redhat.com> + + PR debug/39432 + * ira-int.h (struct allocno): Fix comment for calls_crossed_num. + * ira-conflicts.c (ira_build_conflicts): Prohibit call used + registers for allocnos created from user-defined variables. + 2009-03-11 Ulrich Weigand <Ulrich.Weigand@de.ibm.com> PR target/39181 diff --git a/gcc/ira-conflicts.c b/gcc/ira-conflicts.c index b5537bf..05870ab 100644 --- a/gcc/ira-conflicts.c +++ b/gcc/ira-conflicts.c @@ -800,29 +800,33 @@ ira_build_conflicts (void) } FOR_EACH_ALLOCNO (a, ai) { - if (ALLOCNO_CALLS_CROSSED_NUM (a) == 0) - continue; - if (! flag_caller_saves) + reg_attrs *attrs; + tree decl; + + if ((! flag_caller_saves && ALLOCNO_CALLS_CROSSED_NUM (a) != 0) + /* For debugging purposes don't put user defined variables in + callee-clobbered registers. */ + || (optimize <= 1 + && (attrs = REG_ATTRS (regno_reg_rtx [ALLOCNO_REGNO (a)])) != NULL + && (decl = attrs->decl) != NULL + && VAR_OR_FUNCTION_DECL_P (decl) + && ! DECL_ARTIFICIAL (decl))) { IOR_HARD_REG_SET (ALLOCNO_TOTAL_CONFLICT_HARD_REGS (a), call_used_reg_set); - if (ALLOCNO_CALLS_CROSSED_NUM (a) != 0) - IOR_HARD_REG_SET (ALLOCNO_CONFLICT_HARD_REGS (a), - call_used_reg_set); + IOR_HARD_REG_SET (ALLOCNO_CONFLICT_HARD_REGS (a), + call_used_reg_set); } - else + else if (ALLOCNO_CALLS_CROSSED_NUM (a) != 0) { IOR_HARD_REG_SET (ALLOCNO_TOTAL_CONFLICT_HARD_REGS (a), no_caller_save_reg_set); IOR_HARD_REG_SET (ALLOCNO_TOTAL_CONFLICT_HARD_REGS (a), temp_hard_reg_set); - if (ALLOCNO_CALLS_CROSSED_NUM (a) != 0) - { - IOR_HARD_REG_SET (ALLOCNO_CONFLICT_HARD_REGS (a), - no_caller_save_reg_set); - IOR_HARD_REG_SET (ALLOCNO_CONFLICT_HARD_REGS (a), - temp_hard_reg_set); - } + IOR_HARD_REG_SET (ALLOCNO_CONFLICT_HARD_REGS (a), + no_caller_save_reg_set); + IOR_HARD_REG_SET (ALLOCNO_CONFLICT_HARD_REGS (a), + temp_hard_reg_set); } } if (optimize && ira_conflicts_p diff --git a/gcc/ira-int.h b/gcc/ira-int.h index dfa5734..87ba7b0 100644 --- a/gcc/ira-int.h +++ b/gcc/ira-int.h @@ -333,7 +333,7 @@ struct ira_allocno /* Accumulated frequency of calls which given allocno intersects. */ int call_freq; - /* Length of the previous array (number of the intersected calls). */ + /* Accumulated number of the intersected calls. */ int calls_crossed_num; /* Non NULL if we remove restoring value from given allocno to MEM_OPTIMIZED_DEST at loop exit (see ira-emit.c) because the |