diff options
| -rw-r--r-- | gcc/ChangeLog | 7 | ||||
| -rw-r--r-- | gcc/ira-lives.c | 3 |
2 files changed, 9 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index cdb7c2b..361121b 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2010-04-20 James E. Wilson <wilson@codesourcery.com> + + PR rtl-optimization/43520 + * ira-lives.c (ira_implicitly_set_insn_hard_regs): Exclude classes with + zero available registers. + 2010-04-20 Kaveh R. Ghazi <ghazi@caip.rutgers.edu> * builtins.c (fold_builtin_cproj): Fold more cases. @@ -114,7 +120,6 @@ 2010-04-19 James E. Wilson <wilson@codesourcery.com> - PR rtl-optimization/43520 * config/ia64/ia64.h (FIXED_REGISTERS, CALL_USED_REGISTERS): Make ar.lc fixed and call-used. diff --git a/gcc/ira-lives.c b/gcc/ira-lives.c index 09316b5..7ced1a7 100644 --- a/gcc/ira-lives.c +++ b/gcc/ira-lives.c @@ -805,6 +805,9 @@ ira_implicitly_set_insn_hard_regs (HARD_REG_SET *set) ? GENERAL_REGS : REG_CLASS_FROM_CONSTRAINT (c, p)); if (cl != NO_REGS + /* There is no register pressure problem if all of the + regs in this class are fixed. */ + && ira_available_class_regs[cl] != 0 && (ira_available_class_regs[cl] <= ira_reg_class_nregs[cl][mode])) IOR_HARD_REG_SET (*set, reg_class_contents[cl]); |