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7003454: order constants in constant table by number of references in code

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Reviewed-by: kvn, never, bdelsart
This commit is contained in:
Christian Thalinger 2011-11-16 01:39:50 -08:00
parent 6b52dbceb0
commit 81c085a1e2
17 changed files with 249 additions and 189 deletions
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23
hotspot/src/share/vm/asm/assembler.hpp
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@ -257,6 +257,29 @@ class AbstractAssembler : public ResourceObj {
// ensure buf contains all code (call this before using/copying the code)
void flush();
// min and max values for signed immediate ranges
static int min_simm(int nbits) { return -(intptr_t(1) << (nbits - 1)) ; }
static int max_simm(int nbits) { return (intptr_t(1) << (nbits - 1)) - 1; }
// Define some:
static int min_simm10() { return min_simm(10); }
static int min_simm13() { return min_simm(13); }
static int min_simm16() { return min_simm(16); }
// Test if x is within signed immediate range for nbits
static bool is_simm(intptr_t x, int nbits) { return min_simm(nbits) <= x && x <= max_simm(nbits); }
// Define some:
static bool is_simm5( intptr_t x) { return is_simm(x, 5 ); }
static bool is_simm8( intptr_t x) { return is_simm(x, 8 ); }
static bool is_simm10(intptr_t x) { return is_simm(x, 10); }
static bool is_simm11(intptr_t x) { return is_simm(x, 11); }
static bool is_simm12(intptr_t x) { return is_simm(x, 12); }
static bool is_simm13(intptr_t x) { return is_simm(x, 13); }
static bool is_simm16(intptr_t x) { return is_simm(x, 16); }
static bool is_simm26(intptr_t x) { return is_simm(x, 26); }
static bool is_simm32(intptr_t x) { return is_simm(x, 32); }
// Accessors
CodeBuffer* code() const; // _code_section->outer()
CodeSection* code_section() const { return _code_section; }