diff options
| author |   miod <miod@openbsd.org> | 2011-11-25 05:23:09 +0000 |
|---|---|---|
| committer | miod <miod@openbsd.org> | 2011-11-25 05:23:09 +0000 |
| commit | 24cce7451cb98bde88a6da81c99472145fb82d38 (patch) | |
| tree | 7f003de1c948f4e581571a9b76c2f4b384b6b16a | |
| parent | Allow MD backend to prevent the optimization of a bcopy() or memmove() of (diff) | |
| download | wireguard-openbsd-24cce7451cb98bde88a6da81c99472145fb82d38.tar.xz wireguard-openbsd-24cce7451cb98bde88a6da81c99472145fb82d38.zip | |
Final configuration bits for gcc4: require alignment of local arrays on
word boundaries, and enable the builtins.c `one-byte memcpy' workaround.
| -rw-r--r-- | gnu/gcc/gcc/config/alpha/alpha.h | 7 | ||||
| -rw-r--r-- | gnu/gcc/gcc/config/alpha/openbsd.h | 3 |
2 files changed, 6 insertions, 4 deletions
diff --git a/gnu/gcc/gcc/config/alpha/alpha.h b/gnu/gcc/gcc/config/alpha/alpha.h index ed02c9f3e8e..3e0c5b0f9fe 100644 --- a/gnu/gcc/gcc/config/alpha/alpha.h +++ b/gnu/gcc/gcc/config/alpha/alpha.h @@ -373,12 +373,11 @@ extern enum alpha_fp_trap_mode alpha_fptm; /* Align all constants and variables to at least a word boundary so we can pick up pieces of them faster. */ -/* ??? Only if block-move stuff knows about different source/destination - alignment. */ -#if 0 #define CONSTANT_ALIGNMENT(EXP, ALIGN) MAX ((ALIGN), BITS_PER_WORD) #define DATA_ALIGNMENT(EXP, ALIGN) MAX ((ALIGN), BITS_PER_WORD) -#endif + +/* Make local arrays of chars word-aligned for the same reasons. */ +#define LOCAL_ALIGNMENT(TYPE, ALIGN) DATA_ALIGNMENT (TYPE, ALIGN) /* Set this nonzero if move instructions will actually fail to work when given unaligned data. diff --git a/gnu/gcc/gcc/config/alpha/openbsd.h b/gnu/gcc/gcc/config/alpha/openbsd.h index 3dee9c0a911..61f09a776f5 100644 --- a/gnu/gcc/gcc/config/alpha/openbsd.h +++ b/gnu/gcc/gcc/config/alpha/openbsd.h @@ -83,3 +83,6 @@ Boston, MA 02110-1301, USA. */ /* don't want no friggin' stack checks. */ #undef STACK_CHECK_BUILTIN #define STACK_CHECK_BUILTIN 0 + +/* don't want bcopy() optimized into memmove() unless correctly aligned */ +#define SUBWORD_ACCESS_P (TARGET_BWX) |