diff options
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 3 | ||||
| -rw-r--r-- | gcc/regclass.c | 26 |
2 files changed, 29 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 3b2cc6b..8d6ca26 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,8 @@ Fri Oct 17 12:29:48 1997 Christian Iseli <Christian.Iseli@lslsun.epfl.ch> + * regclass.c (record_address_regs): Look at REG_OK_FOR_{BASE,INDEX}_P + for hard regs to determine base and index registers. + * reload.c (debug_reload_to_stream): New function. Specify stream into which to write debug info. (debug_reload): Modify to call debug_reload_to_stream with stderr. diff --git a/gcc/regclass.c b/gcc/regclass.c index 2932db1..45ee16e 100644 --- a/gcc/regclass.c +++ b/gcc/regclass.c @@ -1539,6 +1539,32 @@ record_address_regs (x, class, scale) else if (code1 == SYMBOL_REF || code1 == CONST || code1 == LABEL_REF) record_address_regs (arg0, INDEX_REG_CLASS, scale); + /* Look for the sum of two registers where the first is definitely + a base register or the second is definitely an index register. */ + + else if (code0 == REG && code1 == REG + && ((REGNO (arg0) < FIRST_PSEUDO_REGISTER + && REG_OK_FOR_BASE_P (arg0)) + || ((REGNO (arg1) < FIRST_PSEUDO_REGISTER + && REG_OK_FOR_INDEX_P (arg1))))) + { + record_address_regs (arg0, BASE_REG_CLASS, scale); + record_address_regs (arg1, INDEX_REG_CLASS, scale); + } + + /* Look for the sum of two registers where the first is definitely + an index register or the second is definitely a base register. */ + + else if (code0 == REG && code1 == REG + && ((REGNO (arg1) < FIRST_PSEUDO_REGISTER + && REG_OK_FOR_BASE_P (arg1)) + || ((REGNO (arg0) < FIRST_PSEUDO_REGISTER + && REG_OK_FOR_INDEX_P (arg0))))) + { + record_address_regs (arg0, INDEX_REG_CLASS, scale); + record_address_regs (arg1, BASE_REG_CLASS, scale); + } + /* If this the sum of two registers where the first is known to be a pointer, it must be a base register with the second an index. */ |