[llvm-commits] [llvm] r158087 - in /llvm/trunk: lib/Target/X86/X86FrameLowering.cpp lib/Target/X86/X86RegisterInfo.cpp lib/Target/X86/X86RegisterInfo.h test/CodeGen/X86/alloca-align-rounding-32.ll test/CodeGen/X86/alloca-align-rounding.ll test/Co

[Chad Rosier]

Chandler, please revert.

 Chad



On Jun 15, 2012, at 5:47 PM, Chandler Carruth <chandlerc at google.com> wrote:

> On Fri, Jun 15, 2012 at 5:41 PM, Chad Rosier <mcrosier at apple.com> wrote:
> Hi Matt,
> I just wanted to let you know I'm working on a fix for this.  There's actually two issues going on here: (1) the issue you've pointed out and (2) the -mstackrealignment is forcing realignment when it's not necessary (i.e., the ABI alignment is >= then the forced alignment).  I haven't figured out a fix for (1), but I have a solution for (2) and fixing that will solve your problem.  Hopefully, I'll have this done in the next few days.  If you need a fix before then feel free to revert this commit.
> 
> Unfortunately, the case we're hitting is actually #1, I suspect it's just this repro that is solved by #2. We might be able to adapt the repro to work w/ normal x86 and demonstrate this issue even w/ #2 solved.
> 
> We're blocked on this, can we revert and carry on?
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