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diff src/share/vm/opto/matcher.hpp @ 2401:7e88bdae86ec

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7029017: Additional architecture support for c2 compiler Summary: Enables cross building of a c2 VM. Support masking of shift counts when the processor architecture mandates it. Reviewed-by: kvn, never
author roland
date Fri, 25 Mar 2011 09:35:39 +0100
parents 2f644f85485d
children 1d1603768966
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--- a/src/share/vm/opto/matcher.hpp	Fri Mar 25 18:19:22 2011 -0400
+++ b/src/share/vm/opto/matcher.hpp	Fri Mar 25 09:35:39 2011 +0100
@@ -427,6 +427,11 @@
   // Do ints take an entire long register or just half?
   static const bool int_in_long;
 
+  // Do the processor's shift instructions only use the low 5/6 bits
+  // of the count for 32/64 bit ints? If not we need to do the masking
+  // ourselves.
+  static const bool need_masked_shift_count;
+
   // This routine is run whenever a graph fails to match.
   // If it returns, the compiler should bailout to interpreter without error.
   // In non-product mode, SoftMatchFailure is false to detect non-canonical