diff options
| author | law <law@138bc75d-0d04-0410-961f-82ee72b054a4> | 1998-05-17 23:00:05 +0000 |
|---|---|---|
| committer | law <law@138bc75d-0d04-0410-961f-82ee72b054a4> | 1998-05-17 23:00:05 +0000 |
| commit | f7d6703c5d83fc9fb06246d6eb49e9b61098045c (patch) | |
| tree | 57adeaca11a81e869dded7cdb7caaa2c7bfb2115 /gcc | |
| parent | 4899654eef097d074b37a9a07098c66ad2e59800 (diff) | |
| download | gcc-f7d6703c5d83fc9fb06246d6eb49e9b61098045c.tar.gz | |
* i386.h (ALIGN_DFmode): Delete.
(CONSTANT_ALIGNMENT): Define.
* varasm.c (force_const_mem): Use it.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@19823 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/config/i386/i386.h | 26 | ||||
| -rw-r--r-- | gcc/varasm.c | 4 |
3 files changed, 34 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 07cb2379722..e2cbd10b628 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +Sun May 17 23:59:45 1998 John Wehle (john@feith.com) + + * i386.h (ALIGN_DFmode): Delete. + (CONSTANT_ALIGNMENT): Define. + * varasm.c (force_const_mem): Use it. + Sun May 17 19:31:05 1998 Richard Henderson <rth@cygnus.com> * alpha.c (alpha_emit_conditional_branch): Clear cmp_code after diff --git a/gcc/config/i386/i386.h b/gcc/config/i386/i386.h index 1053bd9c242..b55ffccb986 100644 --- a/gcc/config/i386/i386.h +++ b/gcc/config/i386/i386.h @@ -419,8 +419,30 @@ extern int ix86_arch; aligned on 64 bit boundaries. */ #define BIGGEST_ALIGNMENT (TARGET_ALIGN_DOUBLE ? 64 : 32) -/* align DFmode constants and nonaggregates */ -#define ALIGN_DFmode (!TARGET_386) +/* If defined, a C expression to compute the alignment given to a + constant that is being placed in memory. CONSTANT is the constant + and ALIGN is the alignment that the object would ordinarily have. + The value of this macro is used instead of that alignment to align + the object. + + If this macro is not defined, then ALIGN is used. + + The typical use of this macro is to increase alignment for string + constants to be word aligned so that `strcpy' calls that copy + constants can be done inline. */ + +#define CONSTANT_ALIGNMENT(EXP, ALIGN) \ + (TREE_CODE (EXP) == REAL_CST \ + ? ((TYPE_MODE (TREE_TYPE (EXP)) == DFmode && (ALIGN) < 64) \ + ? 64 \ + : (TYPE_MODE (TREE_TYPE (EXP)) == XFmode && (ALIGN) < 128) \ + ? 128 \ + : (ALIGN)) \ + : TREE_CODE (EXP) == STRING_CST \ + ? ((TREE_STRING_LENGTH (EXP) >= 31 && (ALIGN) < 256) \ + ? 256 \ + : (ALIGN)) \ + : (ALIGN)) /* If defined, a C expression to compute the alignment for a static variable. TYPE is the data type, and ALIGN is the alignment that diff --git a/gcc/varasm.c b/gcc/varasm.c index 867ae1f1713..9951a50d31e 100644 --- a/gcc/varasm.c +++ b/gcc/varasm.c @@ -3417,6 +3417,10 @@ force_const_mem (mode, x) align = (mode == VOIDmode) ? UNITS_PER_WORD : GET_MODE_SIZE (mode); if (align > BIGGEST_ALIGNMENT / BITS_PER_UNIT) align = BIGGEST_ALIGNMENT / BITS_PER_UNIT; +#ifdef CONSTANT_ALIGNMENT + align = CONSTANT_ALIGNMENT (make_tree (type_for_mode (mode, 0), x), + align * BITS_PER_UNIT) / BITS_PER_UNIT; +#endif pool_offset += align - 1; pool_offset &= ~ (align - 1); |