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| author | Richard Kenner <kenner@gcc.gnu.org> | 1995-07-29 09:44:07 -0400 |
|---|---|---|
| committer | Richard Kenner <kenner@gcc.gnu.org> | 1995-07-29 09:44:07 -0400 |
| commit | 53c8870f929b6803d3427812cb5360f1453df86f (patch) | |
| tree | bfa1d4e8d5dda64c9db143d6074e33743cfe5037 /gcc | |
| parent | 922db4bb4e54b4d3b2b65fb7e6242bbb86080275 (diff) | |
| download | gcc-53c8870f929b6803d3427812cb5360f1453df86f.zip gcc-53c8870f929b6803d3427812cb5360f1453df86f.tar.gz gcc-53c8870f929b6803d3427812cb5360f1453df86f.tar.bz2 | |
(SUBREG_OK_FOR_INDEX_P): New macro.
(INDEX_REGISTER_RTX_P): Use it.
From-SVN: r10198
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/config/sh/sh.h | 22 |
1 files changed, 17 insertions, 5 deletions
diff --git a/gcc/config/sh/sh.h b/gcc/config/sh/sh.h index 1a588ed..38e7caa 100644 --- a/gcc/config/sh/sh.h +++ b/gcc/config/sh/sh.h @@ -798,22 +798,31 @@ extern int current_function_anonymous_args; /* Nonzero if X is a hard reg that can be used as a base reg or if it is a pseudo reg. */ #define REG_OK_FOR_BASE_P(X) \ - (REGNO (X) <= 16 || REGNO(X) >= FIRST_PSEUDO_REGISTER) + (REGNO (X) <= 16 || REGNO (X) >= FIRST_PSEUDO_REGISTER) /* Nonzero if X is a hard reg that can be used as an index or if it is a pseudo reg. */ #define REG_OK_FOR_INDEX_P(X) \ - (REGNO (X) == 0 || REGNO(X) >= FIRST_PSEUDO_REGISTER) + (REGNO (X) == 0 || REGNO (X) >= FIRST_PSEUDO_REGISTER) + +/* Nonzero if X/OFFSET is a hard reg that can be used as an index + or if X is a pseudo reg. */ +#define SUBREG_OK_FOR_INDEX_P(X, OFFSET) \ + ((REGNO (X) == 0 && OFFSET == 0) || REGNO (X) >= FIRST_PSEUDO_REGISTER) #else /* Nonzero if X is a hard reg that can be used as a base reg. */ #define REG_OK_FOR_BASE_P(X) \ - REGNO_OK_FOR_BASE_P (REGNO (X)) + REGNO_OK_FOR_BASE_P (REGNO (X)) /* Nonzero if X is a hard reg that can be used as an index. */ #define REG_OK_FOR_INDEX_P(X) \ - REGNO_OK_FOR_INDEX_P (REGNO (X)) + REGNO_OK_FOR_INDEX_P (REGNO (X)) + +/* Nonzero if X/OFFSET is a hard reg that can be used as an index. */ +#define SUBREG_OK_FOR_INDEX_P(X, OFFSET) \ + (REGNO_OK_FOR_INDEX_P (REGNO (X)) && OFFSET == 0) #endif @@ -843,11 +852,14 @@ extern int current_function_anonymous_args; && GET_CODE (SUBREG_REG (X)) == REG \ && REG_OK_FOR_BASE_P (SUBREG_REG (X)))) +/* Since this must be r0, which is a single register class, we must check + SUBREGs more carefully, to be sure that we don't accept one that extends + outside the class. */ #define INDEX_REGISTER_RTX_P(X) \ ((GET_CODE (X) == REG && REG_OK_FOR_INDEX_P (X)) \ || (GET_CODE (X) == SUBREG \ && GET_CODE (SUBREG_REG (X)) == REG \ - && REG_OK_FOR_INDEX_P (SUBREG_REG (X)))) + && SUBREG_OK_FOR_INDEX_P (SUBREG_REG (X), SUBREG_WORD (X)))) /* Jump to LABEL if X is a valid address RTX. This must also take REG_OK_STRICT into account when deciding about valid registers, but it uses |