[llvm-commits] [llvm] r76558 - in /llvm/trunk: lib/CodeGen/VirtRegRewriter.cpp test/CodeGen/X86/2009-07-21-RewriterBug.ll

[Chris Lattner]

On Jul 21, 2009, at 3:10 PM, Evan Cheng wrote:

>>> I can't reduce it any further.
>>
>> I don't believe you.  It has tons of global variable inits etc that
>> don't impact codegen.  Knowing the problem, can't you hand synthesize
>
> Fine. I can remove some of the global variables.
>
>> a testcase to expose the problem?
>
> Trust me. It's not possible. I welcome anyone who can hand construct
> register allocation miscompilation problems.

Is the testcase worth it then?  Having regression tests is always a  
balance between catching future bugs and slowing down all testing.  If  
you add a large testcase, it becomes less interesting to have it in  
the suite.

-Chris