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7029017: Additional architecture support for c2 compiler

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Enables cross building of a c2 VM. Support masking of shift counts when the processor architecture mandates it.

Reviewed-by: kvn, never
This commit is contained in:
Roland Westrelin 2011-03-25 09:35:39 +01:00
parent 9cc2cbba4b
commit 4171ca786e
13 changed files with 77 additions and 4 deletions
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5
hotspot/src/share/vm/opto/matcher.hpp
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@ -427,6 +427,11 @@ public:
// 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