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comparison src/share/vm/utilities/globalDefinitions.hpp @ 568:30663ca5e8f4

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6805724: ModLNode::Ideal() generates functionally incorrect graph when divisor is any (2^k-1) constant. Summary: C2, ModLNode::Ideal() generates functionally incorrect graph when divisor is any (2^k-1) constant. Reviewed-by: rasbold
author twisti
date Mon, 16 Feb 2009 07:19:26 -0800
parents 7628781568e1
children dca06e7f503d
comparison
equal deleted inserted replaced
567:bbef4344adb2 568:30663ca5e8f4
905 if (!is_power_of_2(x)) basic_fatal("x must be a power of 2"); 905 if (!is_power_of_2(x)) basic_fatal("x must be a power of 2");
906 #endif 906 #endif
907 return log2_intptr(x); 907 return log2_intptr(x);
908 } 908 }
909 909
910 //* the argument must be exactly a power of 2
911 inline int exact_log2_long(jlong x) {
912 #ifdef ASSERT
913 if (!is_power_of_2_long(x)) basic_fatal("x must be a power of 2");
914 #endif
915 return log2_long(x);
916 }
917
910 918
911 // returns integer round-up to the nearest multiple of s (s must be a power of two) 919 // returns integer round-up to the nearest multiple of s (s must be a power of two)
912 inline intptr_t round_to(intptr_t x, uintx s) { 920 inline intptr_t round_to(intptr_t x, uintx s) {
913 #ifdef ASSERT 921 #ifdef ASSERT
914 if (!is_power_of_2(s)) basic_fatal("s must be a power of 2"); 922 if (!is_power_of_2(s)) basic_fatal("s must be a power of 2");