From: Jason Merrill Date: Tue, 14 Sep 2021 02:35:18 +0000 (-0400) Subject: c++: Fix warning on 32-bit x86 X-Git-Tag: upstream/12.2.0~5195 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=22abfa3166c9af1a2a24fae8a2e5d45f4bc6950d;p=platform%2Fupstream%2Fgcc.git c++: Fix warning on 32-bit x86 My C++17 hardware interference sizes patch caused a bogus warning on 32-bit x86, where we have a default L1 cache line size of 0, and the front end complained that the default constructive interference size of 64 was larger than that. gcc/cp/ChangeLog: * decl.c (cxx_init_decl_processing): Don't warn if L1 cache line size is smaller than maxalign. --- diff --git a/gcc/cp/decl.c b/gcc/cp/decl.c index c206502..930531a 100644 --- a/gcc/cp/decl.c +++ b/gcc/cp/decl.c @@ -4776,7 +4776,8 @@ cxx_init_decl_processing (void) if (param_construct_interfere_size < max_align) error ("%<--param constructive-interference-size=%d%> is less than " "%d", param_construct_interfere_size, max_align); - else if (param_construct_interfere_size > param_l1_cache_line_size) + else if (param_construct_interfere_size > param_l1_cache_line_size + && param_l1_cache_line_size >= max_align) warning (OPT_Winterference_size, "%<--param constructive-interference-size=%d%> " "is greater than %<--param l1-cache-line-size=%d%>",