getX86TargetCPU: prefer native instead of pentium4 #15498
Description
| Bugzilla Link | 15126 |
| Version | 3.2 |
| OS | Linux |
| Reporter | LLVM Bugzilla Contributor |
Extended Description
(I'm not sure if this is a configuration/build issue of my Linux distribution.)
In lib/Driver/Tools.cpp getX86TargetCPU returns "pentium4" without given -march/-target-cpu on my system (athlon-xp, i686-pc-linux-gnu). The problem is, that the generated code contains SSE2 instructions not available on this CPU and programs exit with SIGILL. llvm::sys::getHostCPUName() correctly returns "athlon-xp".
May be related to Bug 2051.