a6a2b532f9
This fixes a problem with the vector compares producing CC mode results. The instructions produce condition code modes which can be either interpreted to check an ALL elements or an ANY element result. As the modes where used before they could not be inverted by the middle-end by inverting the comparison code (e.g. eq to ne). The result usually was just wrong. In fact inverting a comparison code on an CCVALL mode would require to also change the mode to CCVANY but this cannot be done easily in the middle-end. With this patch the meaning of an ALL cc mode only refers to the not-inverted comparison code (e.g. eq, gt, ge). With that change inverting the comparison code matches a not operation on the condition code mask again. Bootstrapped and regression tested on s390 and s390x. Bye, -Andreas- gcc/testsuite/ChangeLog: 2016-12-02 Andreas Krebbel <krebbel@linux.vnet.ibm.com> * gcc.target/s390/vector/vec-scalar-cmp-1.c: Fix and harden the pattern checks. * gcc.target/s390/zvector/vec-cmp-1.c: New test. gcc/ChangeLog: 2016-12-02 Andreas Krebbel <krebbel@linux.vnet.ibm.com> * config/s390/s390-modes.def (CCVEQANY, CCVH, CCVHANY, CCVHU) (CCVHUANY): Remove modes. (CCVIH, CCVIHU, CCVIALL, CCVIANY, CCVFALL, CCVFANY): Add modes and documentation. * config/s390/s390.c (s390_match_ccmode_set): Rename cc modes. (s390_expand_vec_compare_scalar): Pick one of the cc consumer modes. (s390_branch_condition_mask): Adjust to use the new cc consumer modes. The new modes allow for proper reversal in the middle-end. (s390_expand_vec_compare_cc): Determine the proper cc producer and consumer modes for a comparison. * config/s390/s390.md: Rename CCVH to CCVIH and CCVHU to CCVIHU throughout the file. * config/s390/vx-builtins.md: Likewise. From-SVN: r243154 |
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| config | ||
| contrib | ||
| fixincludes | ||
| gcc | ||
| gnattools | ||
| gotools | ||
| include | ||
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| libffi | ||
| libgcc | ||
| libgfortran | ||
| libgo | ||
| libgomp | ||
| libiberty | ||
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| libmpx | ||
| libobjc | ||
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| libquadmath | ||
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| maintainer-scripts | ||
| zlib | ||
| .dir-locals.el | ||
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| libtool-ldflags | ||
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| ltmain.sh | ||
| ltoptions.m4 | ||
| ltsugar.m4 | ||
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