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| author | Jan Hubicka <jh@suse.cz> | 2021-11-18 18:41:43 +0100 |
|---|---|---|
| committer | Jan Hubicka <jh@suse.cz> | 2021-11-18 18:41:43 +0100 |
| commit | c331a75d49b6043399f5ccce72a02ccf3b0ddc56 (patch) | |
| tree | 85a193a5b16480661b27e382ff7b0f54433c177a /gcc/cgraph.h | |
| parent | 4f0a2f5a3ddb1024b885c066a18caae4d733bb6c (diff) | |
| download | gcc-c331a75d49b6043399f5ccce72a02ccf3b0ddc56.zip gcc-c331a75d49b6043399f5ccce72a02ccf3b0ddc56.tar.gz gcc-c331a75d49b6043399f5ccce72a02ccf3b0ddc56.tar.bz2 | |
Fix modref wrt __builtin_assume_aligned
__builtin_assume_aligned has bit contraictionary fnspec description "1cX "
which means that parameter 1 is returned but also unused. PTA code takes
precedence to parameter being returned, while modref takes the info that
parameter is unused. This patch tweaks modref to follow PTA semantics (as
suggested by Richard in the PR log)
gcc/ChangeLog:
2021-11-18 Jan Hubicka <hubicka@ucw.cz>
PR ipa/103266
* ipa-modref.c (modref_eaf_analysis::merge_call_lhs_flags): Unused
parameter may still be returned.
(modref_eaf_analysis::analyze_ssa_name): Call merge_call_lhs_flags
even for unused function args.
gcc/testsuite/ChangeLog:
2021-11-18 Jan Hubicka <hubicka@ucw.cz>
PR ipa/103266
* g++.dg/torture/pr103266.C: New test.
Diffstat (limited to 'gcc/cgraph.h')
0 files changed, 0 insertions, 0 deletions