https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77822
--- Comment #33 from Andreas Krebbel <krebbel at gcc dot gnu.org> --- Author: krebbel Date: Fri Dec 2 08:30:16 2016 New Revision: 243160 URL: https://gcc.gnu.org/viewcvs?rev=243160&root=gcc&view=rev Log: PR target/77822: S390: Validate argument range of {zero,sign}_extract. With some undefined code, combine generates patterns where the arguments to *_extract are out of range, e.b. a negative bit position. If the s390 backend accepts these, they lead to not just undefined behaviour but invalid assembly instructions (argument out of the allowed range). So this patch makes sure that the rtl expressions with out of range arguments are rejected. gcc/ChangeLog: 2016-12-02 Dominik Vogt <v...@linux.vnet.ibm.com> PR target/77822 * config/s390/s390.md ("extzv") ("*extzv<mode><clobbercc_or_nocc>") ("*extzvdi<clobbercc_or_nocc>_lshiftrt") ("*<risbg_n>_ior_and_sr_ze") ("*extract1bitdi<clobbercc_or_nocc>") ("*insv<mode><clobbercc_or_nocc>", "*insv_rnsbg_noshift") ("*insv_rnsbg_srl", "*insv<mode>_mem_reg") ("*insvdi_mem_reghigh", "*insvdi_reg_imm"): Use EXTRACT_ARGS_IN_RANGE to validate the arguments of zero_extract and sign_extract. gcc/testsuite/ChangeLog: 2016-12-02 Dominik Vogt <v...@linux.vnet.ibm.com> PR target/77822 * gcc.target/s390/s390.exp: Support .C tests. * gcc.target/s390/pr77822-2.c: New test. * gcc.target/s390/pr77822-1.C: New test. Added: trunk/gcc/testsuite/gcc.target/s390/pr77822-1.C trunk/gcc/testsuite/gcc.target/s390/pr77822-2.c Modified: trunk/gcc/ChangeLog trunk/gcc/config/s390/s390.md trunk/gcc/testsuite/ChangeLog trunk/gcc/testsuite/gcc.target/s390/s390.exp
