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Re: Map ".text.hot" and ".text.unlikely" input section prefixes to separate output sections.
On Fri, Nov 16, 2012 at 05:19:01PM -0800, Ian Lance Taylor wrote:
> On Wed, Nov 14, 2012 at 5:06 PM, Sriraman Tallam <firstname.lastname@example.org> wrote:
> >> Ideally gold should group all input sections with the same name
I strongly disagree. Grouping sections with the same name is a bad
idea, unless the name gives you some infomation from the compiler (as
it does with .text.hot* et al). The problem with grouping sections
with the same name is that with -ffunction-sections objects, you'll
potentially move functions away from their callers, losing cache
locality. The canonical example is a number of object files with
static "setup" functions. These will all have code in .text.setup,
but there is no good reason to group these sections.
Australia Development Lab, IBM