[llvm-bugs] [Bug 34110] Compiler not generating hadd/hsub instructions for simple pattern

via llvm-bugs llvm-bugs at lists.llvm.org
Wed Aug 23 11:11:57 PDT 2017


Sanjay Patel <spatel+llvm at rotateright.com> changed:

           What    |Removed                     |Added
             Status|ASSIGNED                    |RESOLVED
         Resolution|---                         |FIXED

--- Comment #16 from Sanjay Patel <spatel+llvm at rotateright.com> ---
(In reply to Douglas Yung from comment #15)
> On closer inspection, I think it is fixed. 

Great! Resolving then. Do we have an end-to-end (C source to x86 asm) test
somewhere to make sure this isn't broken going forward? As we can see, this
example could go wrong in several places as it winds its way through the

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