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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug gcov-profile/55734] [4.8 Regression] gcov-io.c uses builtins not available in non-GCC compilers Date: Wed, 19 Dec 2012 16:48:00 -0000 [thread overview] Message-ID: <bug-55734-4-CEgDMuq24B@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-55734-4@http.gcc.gnu.org/bugzilla/> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55734 --- Comment #18 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-12-19 16:48:00 UTC --- Perhaps if (v > 0) { #if IN_LIBGCOV r = 63 - __builtin_clzll (v); #else if (sizeof (v) <= sizeof (HOST_WIDE_INT)) r = floor_log2 (v); else if (sizeof (v) == 2 * sizeof (HOST_WIDE_INT)) { r = v >> HOST_BITS_PER_WIDE_INT; if (r) r = floor_log2 (r) + HOST_BITS_PER_WIDE_INT; else r = floor_log2 (v); } else gcc_unreachable (); #endif }
next prev parent reply other threads:[~2012-12-19 16:48 UTC|newest] Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top 2012-12-18 15:33 [Bug gcov-profile/55734] New: " aldyh at gcc dot gnu.org 2012-12-18 15:38 ` [Bug gcov-profile/55734] [4.8 Regression] " rguenth at gcc dot gnu.org 2012-12-18 15:45 ` aldyh at gcc dot gnu.org 2012-12-18 15:49 ` tejohnson at google dot com 2012-12-18 15:53 ` rguenth at gcc dot gnu.org 2012-12-18 15:54 ` rguenth at gcc dot gnu.org 2012-12-18 16:19 ` aldyh at gcc dot gnu.org 2012-12-18 16:24 ` tejohnson at google dot com 2012-12-18 16:26 ` aldyh at gcc dot gnu.org 2012-12-18 16:31 ` tejohnson at google dot com 2012-12-18 16:49 ` aldyh at redhat dot com 2012-12-18 22:41 ` aldyh at gcc dot gnu.org 2012-12-18 22:49 ` tejohnson at google dot com 2012-12-19 6:50 ` tejohnson at google dot com 2012-12-19 9:43 ` rguenth at gcc dot gnu.org 2012-12-19 13:07 ` rguenth at gcc dot gnu.org 2012-12-19 15:08 ` tejohnson at google dot com 2012-12-19 16:40 ` jakub at gcc dot gnu.org 2012-12-19 16:48 ` jakub at gcc dot gnu.org [this message] 2012-12-19 16:58 ` jakub at gcc dot gnu.org 2012-12-19 17:08 ` tejohnson at google dot com 2012-12-19 17:35 ` tejohnson at google dot com 2012-12-20 14:31 ` tejohnson at gcc dot gnu.org 2012-12-20 14:56 ` jakub at gcc dot gnu.org
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