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| author | obrien <obrien@FreeBSD.org> | 2002-06-06 03:36:32 +0000 |
|---|---|---|
| committer | obrien <obrien@FreeBSD.org> | 2002-06-06 03:36:32 +0000 |
| commit | 28b73f7a82880e5da37cfeae97575ee7a71445cc (patch) | |
| tree | a364ba3e5cc51bf3a2f3c77f205ab504b2576c01 /contrib/gcc/config | |
| parent | 4699cf5d0b985289e66c79cd98b19f310c553839 (diff) | |
| download | FreeBSD-src-28b73f7a82880e5da37cfeae97575ee7a71445cc.zip FreeBSD-src-28b73f7a82880e5da37cfeae97575ee7a71445cc.tar.gz | |
Implement "-mno-align-long-strings" which prevents pessimization of strings
for space. -Os could do this, but it was easy to hack an MD version.
This saves a whole 32 bytes in boot2, so I think it is worth using it.
(keep how much worse gcc 3.2 will compile boot2...)
Submitted by: bde (minus gcc 3.2 commentary)
Diffstat (limited to 'contrib/gcc/config')
| -rw-r--r-- | contrib/gcc/config/i386/i386.c | 4 | ||||
| -rw-r--r-- | contrib/gcc/config/i386/i386.h | 7 |
2 files changed, 9 insertions, 2 deletions
diff --git a/contrib/gcc/config/i386/i386.c b/contrib/gcc/config/i386/i386.c index a593221..3e8fc2c 100644 --- a/contrib/gcc/config/i386/i386.c +++ b/contrib/gcc/config/i386/i386.c @@ -10632,8 +10632,8 @@ ix86_constant_alignment (exp, align) else if (ALIGN_MODE_128 (TYPE_MODE (TREE_TYPE (exp))) && align < 128) return 128; } - else if (TREE_CODE (exp) == STRING_CST && TREE_STRING_LENGTH (exp) >= 31 - && align < 256) + else if (TREE_CODE (exp) == STRING_CST && !TARGET_NO_ALIGN_LONG_STRINGS + && TREE_STRING_LENGTH (exp) >= 31 && align < 256) return 256; return align; diff --git a/contrib/gcc/config/i386/i386.h b/contrib/gcc/config/i386/i386.h index cb37393..df2f346 100644 --- a/contrib/gcc/config/i386/i386.h +++ b/contrib/gcc/config/i386/i386.h @@ -138,6 +138,7 @@ extern int target_flags; #define MASK_64BIT 0x02000000 /* Produce 64bit code */ /* ... overlap with subtarget options starts by 0x04000000. */ #define MASK_NO_RED_ZONE 0x04000000 /* Do not use red zone */ +#define MASK_NO_ALIGN_LONG_STRINGS 0x08000000 /* Do not align long strings specially */ /* Use the floating point instructions */ #define TARGET_80387 (target_flags & MASK_80387) @@ -286,6 +287,8 @@ extern int x86_prefetch_sse; #define TARGET_RED_ZONE (!(target_flags & MASK_NO_RED_ZONE)) +#define TARGET_NO_ALIGN_LONG_STRINGS (target_flags & MASK_NO_ALIGN_LONG_STRINGS) + /* WARNING: Do not mark empty strings for translation, as calling gettext on an empty string does NOT return an empty string. */ @@ -384,6 +387,10 @@ extern int x86_prefetch_sse; N_("Use red-zone in the x86-64 code") }, \ { "no-red-zone", MASK_NO_RED_ZONE, \ N_("Do not use red-zone in the x86-64 code") }, \ + { "no-align-long-strings", MASK_NO_ALIGN_LONG_STRINGS, \ + N_("Do not align long strings specially") }, \ + { "align-long-strings", -MASK_NO_ALIGN_LONG_STRINGS, \ + N_("Align strings longer than 30 on a 32-byte boundary") }, \ SUBTARGET_SWITCHES \ { "", TARGET_DEFAULT, 0 }} |
