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Re: bdver1 and bdver2



?ok thanks. I just want to know if there are major differences.


// Naderan *Mahmood;


----- Original Message -----
From: Ian Lance Taylor <iant@google.com>
To: Mahmood Naderan <nt_mahmood@yahoo.com>
Cc: gcc <gcc-help@gcc.gnu.org>
Sent: Saturday, June 16, 2012 11:02 PM
Subject: Re: bdver1 and bdver2

Mahmood Naderan <nt_mahmood@yahoo.com> writes:

> what is the difference between bdver1 and bdver2? 
> I can not find the changlog.

The ChangeLog is here:

2011-07-12? Harsha Jagasia? <harsha.jagasia@amd.com>

??? AMD bdver2 Enablement
??? * config.gcc (i[34567]86-*-linux* | ...): Add bdver2.
??? (case ${target}): Add bdver2.
??? * config/i386/driver-i386.c (host_detect_local_cpu): Let
??? -march=native recognize bdver2 processors.
??? * config/i386/i386-c.c (ix86_target_macros_internal): Add
??? bdver2 def_and_undef
??? * config/i386/i386.c (struct processor_costs bdver2_cost): New
??? bdver2 cost table.
??? (m_BDVER2): New definition.
??? (m_AMD_MULTIPLE): Includes m_BDVER2.
??? (initial_ix86_tune_features): Add bdver2 tuning.
??? (processor_target_table): Add bdver2 entry.
??? (static const char *const cpu_names): Add bdver2 entry.
??? (ix86_option_override_internal): Add bdver2 instruction sets.
??? (ix86_issue_rate): Add bdver2.
??? (ix86_adjust_cost): Add bdver2.
??? (has_dispatch): Add bdver2.
??? * config/i386/i386.h (TARGET_BDVER2): New definition.
??? (enum target_cpu_default): Add TARGET_CPU_DEFAULT_bdver2.
??? (enum processor_type): Add PROCESSOR_BDVER2.
??? * config/i386/i386.md (define_attr "cpu"): Add bdver2.
??? * config/i386/i386.opt ( mdispatch-scheduler): Add bdver2 to
??? description.


The patch is here:

http://gcc.gnu.org/ml/gcc-patches/2011-07/msg00842.html


If you want more information, you'll have to be specific as to what you
what to know.

Ian


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