[PATCH] D90742: [llvm-exegesis][X86] Save and restore eflags.

Wed Nov 11 23:15:50 PST 2020

courbet added a comment.

In D90742#2389801 <https://reviews.llvm.org/D90742#2389801>, @anna wrote:

> hi @courbet, 
> our internal buildbots at Azul has failed because of an older assembler. We’ve taken in all commits/reverts/relands w.r.t this change upto Nov 4th.
>
> The specific failure is:
> /tmp/cc2lBtEi.s: Assembler messages:
> /tmp/cc2lBtEi.s:541: Error: no such instruction: `fxsave64 16(%rax)'
> /tmp/cc2lBtEi.s:566: Error: no such instruction: `fxrstor64 16(%rdi)'
> /tmp/cc2lBtEi.s:592: Error: no such instruction: `fxrstor64 16(%rdi)'
> make[2]: *** [tools/llvm-exegesis/lib/X86/CMakeFiles/LLVMExegesisX86.dir/Target.cpp.o] Error 1
>
> Any suggestions to fix this apart from an upgrade (which seems to be a very invasive change on our machines)?

Which assembler are you using ? Is is configured for 64-bit targets ?

Repository:
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  https://reviews.llvm.org/D90742/new/

https://reviews.llvm.org/D90742