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comparison src/share/vm/opto/subnode.hpp @ 12355:cefad50507d8

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Merge with hs25-b53
author Gilles Duboscq <duboscq@ssw.jku.at>
date Fri, 11 Oct 2013 10:38:03 +0200
parents c9ccd7b85f20
children de6a9e811145
comparison
equal deleted inserted replaced
12058:ccb4f2af2319 12355:cefad50507d8
261 //------------------------------BoolTest--------------------------------------- 261 //------------------------------BoolTest---------------------------------------
262 // Convert condition codes to a boolean test value (0 or -1). 262 // Convert condition codes to a boolean test value (0 or -1).
263 // We pick the values as 3 bits; the low order 2 bits we compare against the 263 // We pick the values as 3 bits; the low order 2 bits we compare against the
264 // condition codes, the high bit flips the sense of the result. 264 // condition codes, the high bit flips the sense of the result.
265 struct BoolTest VALUE_OBJ_CLASS_SPEC { 265 struct BoolTest VALUE_OBJ_CLASS_SPEC {
266 enum mask { eq = 0, ne = 4, le = 5, ge = 7, lt = 3, gt = 1, illegal = 8 }; 266 enum mask { eq = 0, ne = 4, le = 5, ge = 7, lt = 3, gt = 1, overflow = 2, no_overflow = 6, illegal = 8 };
267 mask _test; 267 mask _test;
268 BoolTest( mask btm ) : _test(btm) {} 268 BoolTest( mask btm ) : _test(btm) {}
269 const Type *cc2logical( const Type *CC ) const; 269 const Type *cc2logical( const Type *CC ) const;
270 // Commute the test. I use a small table lookup. The table is created as 270 // Commute the test. I use a small table lookup. The table is created as
271 // a simple char array where each element is the ASCII version of a 'mask' 271 // a simple char array where each element is the ASCII version of a 'mask'
272 // enum from above. 272 // enum from above.
273 mask commute( ) const { return mask("038147858"[_test]-'0'); } 273 mask commute( ) const { return mask("032147658"[_test]-'0'); }
274 mask negate( ) const { return mask(_test^4); } 274 mask negate( ) const { return mask(_test^4); }
275 bool is_canonical( ) const { return (_test == BoolTest::ne || _test == BoolTest::lt || _test == BoolTest::le); } 275 bool is_canonical( ) const { return (_test == BoolTest::ne || _test == BoolTest::lt || _test == BoolTest::le || _test == BoolTest::overflow); }
276 #ifndef PRODUCT 276 #ifndef PRODUCT
277 void dump_on(outputStream *st) const; 277 void dump_on(outputStream *st) const;
278 #endif 278 #endif
279 }; 279 };
280 280