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| author | Zack Weinberg <zackw@panix.com> | 2006-01-23 15:16:19 +0000 |
|---|---|---|
| committer | Zack Weinberg <zack@gcc.gnu.org> | 2006-01-23 15:16:19 +0000 |
| commit | 6e7a4706fdf5641516cd85b20d5ac9070a348e15 (patch) | |
| tree | ffc73708bd6be59b11ab8a71a9537d0d6289dced /gcc/genrecog.c | |
| parent | 6ff09968f1d0f5523b026701374f4a0386eb054c (diff) | |
| download | gcc-6e7a4706fdf5641516cd85b20d5ac9070a348e15.zip gcc-6e7a4706fdf5641516cd85b20d5ac9070a348e15.tar.gz gcc-6e7a4706fdf5641516cd85b20d5ac9070a348e15.tar.bz2 | |
r110130@banpei: zack | 2006-01-22 14:52:43 -0800
r110130@banpei: zack | 2006-01-22 14:52:43 -0800
* rtl.def (match_code): Add second argument.
* genpreds.c (write_extract_subexp): New function.
(write_match_code): Add path argument. Use write_extract_subexp.
(write_predicate_expr): Pass path to write_match_code.
(mark_mode_tests): MATCH_CODE applied to a subexpression does
not perform a mode test.
* genrecog.c (compute_predicate_codes): MATCH_CODE applied to
a subexpression does not constrain the top-level code set.
* read-rtl.c (read_rtx_variadic): New function.
(read_rtx_1): Use it; allow AND and IOR to be variadic.
* doc/md.texi: Document new notation.
* config/i386/predicates.md (cmpsi_operand_1): Fold into ...
(cmpsi_operand): ... here, using new notation.
From-SVN: r110126
Diffstat (limited to 'gcc/genrecog.c')
| -rw-r--r-- | gcc/genrecog.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/gcc/genrecog.c b/gcc/genrecog.c index cb86849..56d6598 100644 --- a/gcc/genrecog.c +++ b/gcc/genrecog.c @@ -270,7 +270,15 @@ compute_predicate_codes (rtx exp, char codes[NUM_RTX_CODE]) break; case MATCH_CODE: - /* MATCH_CODE allows a specified list of codes. */ + /* MATCH_CODE allows a specified list of codes. However, if it + does not apply to the top level of the expression, it does not + constrain the set of codes for the top level. */ + if (XSTR (exp, 1)[0] != '\0') + { + memset (codes, Y, NUM_RTX_CODE); + break; + } + memset (codes, N, NUM_RTX_CODE); { const char *next_code = XSTR (exp, 0); |