[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 10:06 AM, Evan Cheng wrote:

>>>
>>> URL: http://llvm.org/viewvc/llvm-project?rev=76558&view=rev
>>> Log:
>>> Another rewriter bug exposed by recent coalescer changes.
>>> ReuseInfo::GetRegForReload() should make sure the "switched"
>>> register is in the desired register class. I'm surprised this hasn't
>>> caused more failures in the past.
>>
>> Thanks Evan, can you reduce this testcase though?  It is huge, and
>> doesn't appear to have been run through bugpoint.
>
> That's a bugpoint reduced test case.
Ok

> 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  
a testcase to expose the problem?

-Chris