diff options
Diffstat (limited to 'gcc/flow.c')
| -rw-r--r-- | gcc/flow.c | 27 |
1 files changed, 16 insertions, 11 deletions
diff --git a/gcc/flow.c b/gcc/flow.c index d9e3ae3ce40..180796268c6 100644 --- a/gcc/flow.c +++ b/gcc/flow.c @@ -414,8 +414,8 @@ life_analysis (f, file, flags) FILE *file; int flags; { -#ifdef ELIMINABLE_REGS int i; +#ifdef ELIMINABLE_REGS static const struct {const int from, to; } eliminables[] = ELIMINABLE_REGS; #endif @@ -431,6 +431,13 @@ life_analysis (f, file, flags) SET_HARD_REG_BIT (elim_reg_set, FRAME_POINTER_REGNUM); #endif + +#ifdef CANNOT_CHANGE_MODE_CLASS + if (flags & PROP_REG_INFO) + for (i=0; i < NUM_MACHINE_MODES; ++i) + INIT_REG_SET (&subregs_of_mode[i]); +#endif + if (! optimize) flags &= ~(PROP_LOG_LINKS | PROP_AUTOINC | PROP_ALLOW_CFG_CHANGES); @@ -3813,12 +3820,11 @@ mark_used_regs (pbi, x, cond, insn) break; case SUBREG: -#ifdef CLASS_CANNOT_CHANGE_MODE +#ifdef CANNOT_CHANGE_MODE_CLASS if (GET_CODE (SUBREG_REG (x)) == REG - && REGNO (SUBREG_REG (x)) >= FIRST_PSEUDO_REGISTER - && CLASS_CANNOT_CHANGE_MODE_P (GET_MODE (x), - GET_MODE (SUBREG_REG (x)))) - REG_CHANGES_MODE (REGNO (SUBREG_REG (x))) = 1; + && REGNO (SUBREG_REG (x)) >= FIRST_PSEUDO_REGISTER) + SET_REGNO_REG_SET (&subregs_of_mode[GET_MODE (x)], + REGNO (SUBREG_REG (x))); #endif /* While we're here, optimize this case. */ @@ -3862,13 +3868,12 @@ mark_used_regs (pbi, x, cond, insn) || GET_CODE (testreg) == SIGN_EXTRACT || GET_CODE (testreg) == SUBREG) { -#ifdef CLASS_CANNOT_CHANGE_MODE +#ifdef CANNOT_CHANGE_MODE_CLASS if (GET_CODE (testreg) == SUBREG && GET_CODE (SUBREG_REG (testreg)) == REG - && REGNO (SUBREG_REG (testreg)) >= FIRST_PSEUDO_REGISTER - && CLASS_CANNOT_CHANGE_MODE_P (GET_MODE (SUBREG_REG (testreg)), - GET_MODE (testreg))) - REG_CHANGES_MODE (REGNO (SUBREG_REG (testreg))) = 1; + && REGNO (SUBREG_REG (testreg)) >= FIRST_PSEUDO_REGISTER) + SET_REGNO_REG_SET (&subregs_of_mode[GET_MODE (testreg)], + REGNO (SUBREG_REG (testreg))); #endif /* Modifying a single register in an alternate mode |