https://bugs.llvm.org/show_bug.cgi?id=42885
Bug ID: 42885
Summary: optimization bug with -march=haswell/skylake
Product: clang
Version: trunk
Hardware: All
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: -New Bugs
Assignee: unassignedclangb...@nondot.org
Reporter: m...@hanicka.net
CC: htmldevelo...@gmail.com, llvm-bugs@lists.llvm.org,
neeil...@live.com, richard-l...@metafoo.co.uk
Created attachment 22337
--> https://bugs.llvm.org/attachment.cgi?id=22337&action=edit
Problematic example
Optimizer for attached code generate suboptimal assembly when
`-march=haswell/skylake` (maybe others too) provided.
Example: https://compiler-explorer.com/z/hILOvf
But for another example the assembly is ok:
https://compiler-explorer.com/z/bdOObm
Thanks, Hana
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