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add some notes and a file to collect unimplemented features in the

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x86 backend.  These will all be answered with "patches welcome", so
a PR doesn't help drive them along.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57630 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2008-10-16 06:46:12 +00:00
parent 0d5d05b553
commit c74092ba8f
1 changed files with 14 additions and 0 deletions
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lib/Target/X86/README-UNIMPLEMENTED.txt Normal file
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//===---------------------------------------------------------------------===//
// Testcases that crash the X86 backend because they aren't implemented
//===---------------------------------------------------------------------===//
These are cases we know the X86 backend doesn't handle. Patches are welcome
and appreciated, because no one has signed up to implemented these yet.
Implementing these would allow elimination of the corresponding intrinsics,
which would be great.
1) vector shifts
2) vector comparisons
3) vector fp<->int comparisons: PR2683, PR2684, PR2685, PR2686, PR2688