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diff src/cpu/sparc/vm/globals_sparc.hpp @ 1365:6476042f815c

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6940701: Don't align loops in stubs for Niagara sparc Summary: Don't align loops in stubs for Niagara sparc since NOPs are expensive. Reviewed-by: twisti, never
author kvn
date Wed, 07 Apr 2010 09:37:47 -0700
parents 473cce303f13
children c18cbe5936b8
line wrap: on
line diff
--- a/src/cpu/sparc/vm/globals_sparc.hpp	Tue Apr 06 15:18:10 2010 -0700
+++ b/src/cpu/sparc/vm/globals_sparc.hpp	Wed Apr 07 09:37:47 2010 -0700
@@ -40,6 +40,9 @@
 define_pd_global(bool, UncommonNullCast,            true);  // Uncommon-trap NULLs past to check cast
 
 define_pd_global(intx, CodeEntryAlignment,    32);
+// The default setting 16/16 seems to work best.
+// (For _228_jack 16/16 is 2% better than 4/4, 16/4, 32/32, 32/16, or 16/32.)
+define_pd_global(intx, OptoLoopAlignment,     16);  // = 4*wordSize
 define_pd_global(intx, InlineFrequencyCount,  50);  // we can use more inlining on the SPARC
 define_pd_global(intx, InlineSmallCode,       1500);
 #ifdef _LP64