[llvm-commits] [PATCH] Add an attribute for Oz related optimizations

[Patrik Hägglund H]

Can't llvm::PassManagerBuilder::SizeLevel be used?

In my opinion, a function attribute should only be used if there is a need for differencing between functions. For example, if you have a optimization pragma in the source code, specifying that a particular function (but not other functions) should be optimized (for size in this case).

Regards,
Patrik Hägglund
________________________________
From: llvm-commits-bounces at cs.uiuc.edu [mailto:llvm-commits-bounces at cs.uiuc.edu] On Behalf Of Quentin Colombet
Sent: den 18 oktober 2012 20:01
To: llvm-commits at cs.uiuc.edu
Subject: [llvm-commits] [PATCH] Add an attribute for Oz related optimizations

Hi,

The attached patch is the first step to have a better control on Oz related optimizations.
The Oz optimization level focuses on code size, thus I propose to add an attribute called ForceSizeOpt.

The idea would be to set this attribute to all functions when the Oz optimization level is On (modification not available in this patch) and slowly tune the existing optimizations according to this attribute.

This is my first patch to llvm, so do not hesitate to make comments please.

-Quentin

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