GCC modified for the FreeChainXenon project
bd87b1fddb
get_ref_base_and_extent recognizes ARRAY_REFs with variable index but into arrays of length one as constant offset accesses. However, max_size in such cases is extended to span the whole element. This confuses SRA verification when SRA also builds its (total scalarization) access structures to describe fields under such array - get_ref_base_and_extent returns different size and max_size for them. Fixed by not performing the check for total scalarization accesses. The subsequent check then had to be changed to use size and not max_size too, which meant it has to be skipped when the access structure describes a genuine variable array access. Bootstrapped and tested on x86_64-linux. 2020-04-16 Martin Jambor <mjambor@suse.cz> PR tree-optimization/94598 * tree-sra.c (verify_sra_access_forest): Fix verification of total scalarization accesses under access to one-element arrays. testsuite/ * gcc.dg/tree-ssa/pr94598.c: New test. |
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| config | ||
| contrib | ||
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| ltversion.m4 | ||
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