[llvm-bugs] [Bug 15298] llc generates incorrect AVX code on sandy bridge on following .ll file

via llvm-bugs llvm-bugs at lists.llvm.org
Wed Apr 26 05:39:47 PDT 2017


https://bugs.llvm.org/show_bug.cgi?id=15298

Simon Pilgrim <llvm-dev at redking.me.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |FIXED
                 CC|                            |llvm-dev at redking.me.uk
             Status|NEW                         |RESOLVED

--- Comment #3 from Simon Pilgrim <llvm-dev at redking.me.uk> ---
Resolving old ticket - the new shuffle combining changed this considerably but
it works fine and I added a test at rL301396:

# BB#0: # %L.entry
  movl {{[0-9]+}}(%esp), %eax
  movl {{[0-9]+}}(%esp), %ecx
  vbroadcastss 304(%ecx), %xmm0
  vxorps %ymm1, %ymm1, %ymm1
  vblendps {{.*#+}} ymm0 = ymm1[0],ymm0[1,2],ymm1[3,4,5,6,7]
  vmovups %ymm0, 608(%eax)
  vzeroupper
  retl

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