From: "Ángel González" <keisial@gmail.com>
To: rajkrishna <krishnakumar.vengadasamy@utas.utc.com>
Cc: gcc-help@gcc.gnu.org
Subject: Re: Generating Assembly Files Using GCC
Date: Wed, 08 Jan 2014 23:18:00 -0000 [thread overview]
Message-ID: <52CDDCBD.5020802@gmail.com> (raw)
In-Reply-To: <1389008529517-1000051.post@n5.nabble.com>
On 06/01/14 12:42, rajkrishna wrote:
> We are using powerpc-motorola-elf-as.exe to generate assembly file from a
> "*cpp*" file. If there is an if condition for eg *if(x==0)* , and when we
> generate the assembly code for the condition ,"*bne*" and "*beq*" are
> generated whereas only *beq *(branch equal) is the only code what we are
> expecting as per the source code. Is there are any gcc switches which can be
> used to customize the assembly code generation?
You should provide a bigger example. Make a toy program with the if,
show the
original code, the generated assembly (only relevant lines needed, of
course)
and the expected one.
What optimization level (-O<n>) are you using? That's the most important
switch
changing the code generation (there are also switches to enable/disable
individual
optimizations, but -On works with groups of them). Please provide the
command
you are using to generate the assembly.
next prev parent reply other threads:[~2014-01-08 23:18 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-06 11:42 rajkrishna
2014-01-08 23:18 ` Ángel González [this message]
2014-01-09 14:31 ` rajkrishna
2014-01-10 22:19 ` Ángel González
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