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| author | Chung-Lin Tang <cltang@codesourcery.com> | 2010-10-12 18:35:59 +0000 |
|---|---|---|
| committer | Chung-Lin Tang <cltang@gcc.gnu.org> | 2010-10-12 18:35:59 +0000 |
| commit | 0c86e0dd926d3f688bdaeead1241a98851774ba9 (patch) | |
| tree | c47daee6cca100d6c565b88cef46b6330ee12bb9 | |
| parent | 515fe073f6b6973655021153183ab3132a9f032c (diff) | |
| download | gcc-0c86e0dd926d3f688bdaeead1241a98851774ba9.zip gcc-0c86e0dd926d3f688bdaeead1241a98851774ba9.tar.gz gcc-0c86e0dd926d3f688bdaeead1241a98851774ba9.tar.bz2 | |
arm.h (ARM_EXPAND_ALIGNMENT): Rename from DATA_ALIGNMENT and add COND parameter.
2010-10-12 Chung-Lin Tang <cltang@codesourcery.com>
* config/arm/arm.h (ARM_EXPAND_ALIGNMENT): Rename from
DATA_ALIGNMENT and add COND parameter. Update comments above.
(DATA_ALIGNMENT): Use ARM_EXPAND_ALIGNMENT, with !optimize_size.
(LOCAL_ALIGNMENT): Use ARM_EXPAND_ALIGNMENT, with
!flag_conserve_stack.
From-SVN: r165390
| -rw-r--r-- | gcc/ChangeLog | 8 | ||||
| -rw-r--r-- | gcc/config/arm/arm.h | 14 |
2 files changed, 18 insertions, 4 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 7a46d36..14e4cde 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,11 @@ +2010-10-12 Chung-Lin Tang <cltang@codesourcery.com> + + * config/arm/arm.h (ARM_EXPAND_ALIGNMENT): Rename from + DATA_ALIGNMENT and add COND parameter. Update comments above. + (DATA_ALIGNMENT): Use ARM_EXPAND_ALIGNMENT, with !optimize_size. + (LOCAL_ALIGNMENT): Use ARM_EXPAND_ALIGNMENT, with + !flag_conserve_stack. + 2010-10-12 H.J. Lu <hongjiu.lu@intel.com> PR bootstrap/45958 diff --git a/gcc/config/arm/arm.h b/gcc/config/arm/arm.h index 55442f5..c8cbfa2 100644 --- a/gcc/config/arm/arm.h +++ b/gcc/config/arm/arm.h @@ -617,15 +617,21 @@ extern int arm_arch_hwdiv; /* Align definitions of arrays, unions and structures so that initializations and copies can be made more efficient. This is not ABI-changing, so it only affects places where we can see the - definition. */ -#define DATA_ALIGNMENT(EXP, ALIGN) \ - ((((ALIGN) < BITS_PER_WORD) \ + definition. Increasing the alignment tends to introduce padding, + so don't do this when optimizing for size/conserving stack space. */ +#define ARM_EXPAND_ALIGNMENT(COND, EXP, ALIGN) \ + (((COND) && ((ALIGN) < BITS_PER_WORD) \ && (TREE_CODE (EXP) == ARRAY_TYPE \ || TREE_CODE (EXP) == UNION_TYPE \ || TREE_CODE (EXP) == RECORD_TYPE)) ? BITS_PER_WORD : (ALIGN)) +/* Align global data. */ +#define DATA_ALIGNMENT(EXP, ALIGN) \ + ARM_EXPAND_ALIGNMENT(!optimize_size, EXP, ALIGN) + /* Similarly, make sure that objects on the stack are sensibly aligned. */ -#define LOCAL_ALIGNMENT(EXP, ALIGN) DATA_ALIGNMENT(EXP, ALIGN) +#define LOCAL_ALIGNMENT(EXP, ALIGN) \ + ARM_EXPAND_ALIGNMENT(!flag_conserve_stack, EXP, ALIGN) /* Setting STRUCTURE_SIZE_BOUNDARY to 32 produces more efficient code, but the value set in previous versions of this toolchain was 8, which produces more |