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| author | Jason Merrill <jason@redhat.com> | 2021-09-13 22:35:18 -0400 |
|---|---|---|
| committer | Jason Merrill <jason@redhat.com> | 2021-09-13 23:16:39 -0400 |
| commit | 22abfa3166c9af1a2a24fae8a2e5d45f4bc6950d (patch) | |
| tree | dde92a6a1bc4e830851fa0d483cb1a5a35a4c952 /gcc/cp/decl.c | |
| parent | 07985c47dc79d90cea33dcd9f84ec288ab5df261 (diff) | |
| download | gcc-22abfa3166c9af1a2a24fae8a2e5d45f4bc6950d.zip gcc-22abfa3166c9af1a2a24fae8a2e5d45f4bc6950d.tar.gz gcc-22abfa3166c9af1a2a24fae8a2e5d45f4bc6950d.tar.bz2 | |
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.
Diffstat (limited to 'gcc/cp/decl.c')
| -rw-r--r-- | gcc/cp/decl.c | 3 |
1 files changed, 2 insertions, 1 deletions
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%>", |