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| author | Christian Iseli <Christian.Iseli@lslsun.epfl.ch> | 1997-10-17 17:46:57 +0200 |
|---|---|---|
| committer | Jeff Law <law@gcc.gnu.org> | 1997-10-17 09:46:57 -0600 |
| commit | f22376c716a73cfb82b58c5f3c5889ba20fdbfc7 (patch) | |
| tree | 61e23b048b828f49ad3bd66ac314adcfbd0768d3 /gcc/regclass.c | |
| parent | b8fb2d721d6299b18eced2ce5ef777a6196cb507 (diff) | |
| download | gcc-f22376c716a73cfb82b58c5f3c5889ba20fdbfc7.tar.gz | |
regclass.c (record_address_regs): Look at REG_OK_FOR_{BASE,INDEX}_P for hard regs to determine base and index...
* regclass.c (record_address_regs): Look at REG_OK_FOR_{BASE,INDEX}_P
for hard regs to determine base and index registers.
From-SVN: r15954
Diffstat (limited to 'gcc/regclass.c')
| -rw-r--r-- | gcc/regclass.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/gcc/regclass.c b/gcc/regclass.c index 2932db13810..45ee16ee202 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. */ |