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authorkenner <kenner@138bc75d-0d04-0410-961f-82ee72b054a4>2001-02-06 12:39:15 +0000
committerkenner <kenner@138bc75d-0d04-0410-961f-82ee72b054a4>2001-02-06 12:39:15 +0000
commitbc17f7a49bf238d7a6fb3c07e70f221afd14f27c (patch)
treeef948bedc788321fdca09d6b2f508f386ee213d9 /libjava/java/security/interfaces/DSAKey.java
parent73a7dbdd334650e4c456b3871bf6be04eb2f35c8 (diff)
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* combine.c (nonzero_bits, case PLUS): If pointers extend unsigned
and this is the sum of a pointer and a constant, we know the result did not overflow. (num_sign_bit_copies, case PLUS): Likewise. * explow.c (convert_memory_address): Remove opposite SUBREG. * function.c (instantiate_new_reg): New function (from common code). (instantiate_virtual_regs_1): Call it. For PLUS, handle if (plus (subreg (virt-reg) (const_int)) if pointers sign- or zero-extend. * simplify-rtx.c (simplify_unary_operation, case ZERO_EXTEND): If pointers extend unsigned, use inside of SUBREG. (simplify_unary_operation, case SIGN_EXTEND): Likewise, if sign extend. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@39489 138bc75d-0d04-0410-961f-82ee72b054a4
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