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2010-02-23 Julian Brown <julian@codesourcery.com>
gcc/
* calls.c (precompute_register_parameters): Avoid generating a
register move if optimizing for size.
2010-07-26 Julian Brown <julian@codesourcery.com>
Merge from Sourcery G++ 4.4:
2010-02-15 Julian Brown <julian@codesourcery.com>
Issue #7486
=== modified file 'gcc/calls.c'
--- old/gcc/calls.c 2010-04-02 18:54:46 +0000
+++ new/gcc/calls.c 2010-08-13 10:50:45 +0000
@@ -703,7 +703,9 @@
For small register classes, also do this if this call uses
register parameters. This is to avoid reload conflicts while
- loading the parameters registers. */
+ loading the parameters registers.
+
+ Avoid creating the extra move if optimizing for size. */
else if ((! (REG_P (args[i].value)
|| (GET_CODE (args[i].value) == SUBREG
@@ -711,6 +713,7 @@
&& args[i].mode != BLKmode
&& rtx_cost (args[i].value, SET, optimize_insn_for_speed_p ())
> COSTS_N_INSNS (1)
+ && !optimize_size
&& ((SMALL_REGISTER_CLASSES && *reg_parm_seen)
|| optimize))
args[i].value = copy_to_mode_reg (args[i].mode, args[i].value);
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