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Re: Fwd: [PATCH] Scheduling result adjustment to enable macro-fusion
- From: Wei Mi <wmi at google dot com>
- To: "H.J. Lu" <hjl dot tools at gmail dot com>
- Cc: Alexander Monakov <amonakov at ispras dot ru>, Steven Bosscher <stevenb dot gcc at gmail dot com>, GCC Patches <gcc-patches at gcc dot gnu dot org>, David Li <davidxl at google dot com>, Kirill Yukhin <kirill dot yukhin at gmail dot com>
- Date: Fri, 13 Sep 2013 13:45:16 -0700
- Subject: Re: Fwd: [PATCH] Scheduling result adjustment to enable macro-fusion
- Authentication-results: sourceware.org; auth=none
- References: <CAMe9rOo-dc7=ax8_pA21wuxnqphLBvf_Voi2n1OHJX7ZEab=ew at mail dot gmail dot com>
On Fri, Sep 13, 2013 at 12:09 PM, H.J. Lu <firstname.lastname@example.org> wrote:
> On Fri, Sep 13, 2013 at 11:28 AM, Wei Mi <email@example.com> wrote:
>>> Checking corei7/corei7-avx explicitly isn't a good idea.
>>> It is also useful for Ivy Bridge and Haswell. I think you
>>> should use a variable to control it, similar to
>> Different x86 microarchitectures support macro-fusion for different
>> compare and branch combinations. I need to differentiate various x86
>> microarchitectures. If use TARGET_FUSE_CMP_AND_BRANCH like vars to
>> control it, it requires a bunch of them. That is why I choose to check
> Can you use TARGET_FUSE_CMP_AND_BRANCH covers cmp/test
> and branch, TARGET_FUSE_ALU_AND_BRANCH covers and/add/sub/inc/dec
> and branch?
Yes, I can. Thanks for the suggestion. Will fix it, and with Ivy
Bridge and Haswell included.