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arm.c (arm_override_options): Revert change of arm_constant_limit when optimizing for size.

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* arm.c (arm_override_options): Revert change of arm_constant_limit
when optimizing for size.

From-SVN: r73082
This commit is contained in:
Richard Earnshaw 2003-10-30 10:26:04 +00:00 • committed by Richard Earnshaw
parent 08b9183d62
commit 577d63287a
2 changed files with 10 additions and 5 deletions
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gcc/ChangeLog
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@ -1,3 +1,8 @@
2003-10-30 Richard Earnshaw <rearnsha@arm.com>
* arm.c (arm_override_options): Revert change of arm_constant_limit
when optimizing for size.
2003-10-29 Richard Henderson <rth@redhat.com>
* fold-const.c (fold_single_bit_test): Convert the input to the

10
gcc/config/arm/arm.c
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@ -847,11 +847,11 @@ arm_override_options (void)
if (optimize_size)
{
/* If optimizing for space, we let the compiler synthesize constants
with up to 2 insns, which uses the same space as a load from memory.
This gives the opportunity to take even less space when different
offsets can be factorized into multiple pre-indexed loads or stores. */
arm_constant_limit = 2;
/* There's some dispute as to whether this should be 1 or 2. However,
experiments seem to show that in pathological cases a setting of
1 degrades less severly than a setting of 2. This could change if
other parts of the compiler change their behavior. */
arm_constant_limit = 1;
/* If optimizing for size, bump the number of instructions that we
are prepared to conditionally execute (even on a StrongARM). */