public inbox for gcc-cvs@sourceware.org help / color / mirror / Atom feed
From: Richard Biener <rguenth@gcc.gnu.org> To: gcc-cvs@gcc.gnu.org Subject: [gcc r14-8957] tree-optimization/113896 - testcase for fixed PR Date: Tue, 13 Feb 2024 12:42:34 +0000 (GMT) [thread overview] Message-ID: <20240213124234.E024E385829D@sourceware.org> (raw) https://gcc.gnu.org/g:4a1cd5560b9b545eb848eb1d1e06d345fb606f76 commit r14-8957-g4a1cd5560b9b545eb848eb1d1e06d345fb606f76 Author: Richard Biener <rguenther@suse.de> Date: Tue Feb 13 13:39:29 2024 +0100 tree-optimization/113896 - testcase for fixed PR The SLP permute optimization rewrite fixed this. PR tree-optimization/113896 * g++.dg/torture/pr113896.C: New testcase. Diff: --- gcc/testsuite/g++.dg/torture/pr113896.C | 35 +++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) diff --git a/gcc/testsuite/g++.dg/torture/pr113896.C b/gcc/testsuite/g++.dg/torture/pr113896.C new file mode 100644 index 000000000000..534c1c2e1cce --- /dev/null +++ b/gcc/testsuite/g++.dg/torture/pr113896.C @@ -0,0 +1,35 @@ +// { dg-do run } +// { dg-additional-options "-ffast-math" } + +double a1 = 1.0; +double a2 = 1.0; + +void __attribute__((noipa)) +f(double K[2], bool b) +{ + double A[] = { + b ? a1 : a2, + 0, + 0, + 0 + }; + + double sum{}; + for(double a : A) sum += a; + for(double& a : A) a /= sum; + + if (b) { + K[0] = A[0]; // 1.0 + K[1] = A[1]; // 0.0 + } else { + K[0] = A[0] + A[1]; + } +} + +int main() +{ + double K[2]{}; + f(K, true); + if (K[0] != 1. || K[1] != 0.) + __builtin_abort (); +}
reply other threads:[~2024-02-13 12:42 UTC|newest] Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=20240213124234.E024E385829D@sourceware.org \ --to=rguenth@gcc.gnu.org \ --cc=gcc-cvs@gcc.gnu.org \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions for how to clone and mirror all data and code used for this inbox; as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).