[llvm-bugs] [Bug 34980] New: Code generation fails with AESIMC intrinsic

via llvm-bugs llvm-bugs at lists.llvm.org
Tue Oct 17 10:16:00 PDT 2017


            Bug ID: 34980
           Summary: Code generation fails with AESIMC intrinsic
           Product: clang
           Version: 5.0
          Hardware: PC
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: -New Bugs
          Assignee: unassignedclangbugs at nondot.org
          Reporter: pavel.kryukov at phystech.edu
                CC: llvm-bugs at lists.llvm.org

Created attachment 19308
  --> https://bugs.llvm.org/attachment.cgi?id=19308&action=edit
LLVM output (BC file)


This is a duplicate of #34967 with simpler testing code.

I faced a code generator bug while compiling AES-NI instrinsics. That code is
compiled with GCC and Visual Studio without problems, but different versions of
Clang fail in different environments. I've attached simplified clang test case
from Clang 5.0.0.

Command line:

fatal error: error in backend: Cannot select: intrinsic %llvm.x86.aesni.aesimc
clang: error: clang frontend command failed with exit code 70 (use -v to see
clang version 5.0.1-svn315836-1~exp1 (branches/release_50)
Target: x86_64-pc-linux-gnu

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