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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Clang changed -ffp-contract flag to "on", breaking serval client as well as SPEC2006 and SPEC2017 tests."
href="https://bugs.llvm.org/show_bug.cgi?id=51346">51346</a>
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<th>Summary</th>
<td>Clang changed -ffp-contract flag to "on", breaking serval client as well as SPEC2006 and SPEC2017 tests.
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<th>Product</th>
<td>clang
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<th>Version</th>
<td>trunk
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<th>Hardware</th>
<td>All
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<th>OS</th>
<td>Linux
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<th>Status</th>
<td>NEW
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<th>Severity</th>
<td>release blocker
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>C
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>haoweiwu1991@gmail.com
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<th>CC</th>
<td>blitzrakete@gmail.com, dgregor@apple.com, erik.pilkington@gmail.com, llvm-bugs@lists.llvm.org, richard-llvm@metafoo.co.uk
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<pre>Recent change
<a href="https://github.com/llvm/llvm-project/commit/48ad446a0fb2c9b98cb7047e4daf8a84c29cef8f">https://github.com/llvm/llvm-project/commit/48ad446a0fb2c9b98cb7047e4daf8a84c29cef8f</a>
flip '-ffp-contract' to 'on', which breaks float point comparison tests in
Clang clients like Fuchsia and Chromium. This behavior change also breaks
benchmark suites like SPEC2006 and SPEC2017 such as
`External/SPEC/CFP2006/453.povray/` test.
This breaking change need more discussion and the breakages should be resolved
before the release of clang-13.</pre>
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