[LLVMdev] Emitting .zero

[David A. Greene]

Chris Lattner <clattner at apple.com> writes:

> On Sep 16, 2010, at 5:12 PM, David Greene wrote:
>
>> With LLVM 2.7, I see very inefficient emitting of zeros in .s files:

>> But maybe it's fixed in 2.8 or something.
>
> It's not fixed in 2.8, it sounds like it's simple code in AsmPrinter
> when emitting a ConstantStruct or something.  A simple testcase would
> be helpful.

I have some 2.7 code to fix this now.  Pretty easy fix.  As a bonus it
will aggregate all integer values, not just zero, but I don't think
MCAsmStreamer currently optimizes that.  I'll upstream it ASAP along
with a testcase.

                               -Dave