Check whether a vector of QIs can store all indices

[thirdparty/gcc.git] / gcc / ChangeLog

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+2018-01-02  Richard Sandiford  <richard.sandiford@linaro.org>
+
+       * optabs-query.c (can_vec_perm_var_p): Check whether lowering
+       to qimode could truncate the indices.
+       * optabs.c (expand_vec_perm_var): Likewise.
+
 2018-01-02  Richard Sandiford  <richard.sandiford@linaro.org>
 
        * Makefile.in (OBJS): Add vec-perm-indices.o.