Re: [PATCH v2 2/3] perf annotate: Introduce the new source code view

[Peter Zijlstra]

On Wed, Mar 01, 2017 at 11:56:39PM +0900, Namhyung Kim wrote:

> It's a kind of user experience issue.  We provide the asm-only and
> asm+source annotation, and I think it'd be nice to add source-only
> option.  And I remember that it was requested some time ago..

Thing is, an optimizing compiler -- that same beast that ensures your
objdump -S output is such a garbled mess -- can generate code that
becomes very hard to relate to the original source code.

I'm really sceptical the source line only view is very useful; maybe if
you build with -O0, but then, if you do that you're not bothered with
performance.