On Tue, 12 Dec 2023 09:39:58 +0100
David Brown via Gcc wrote:
> If you have fixed the immediate problems in the code, add the
> "-fsanitize=undefined" flag before running it. That will do run-time
> undefined behaviour checks.
I would like to understand that better, for reasons you might gues
On Tue, 12 Dec 2023, Jonathan Wakely via Gcc wrote:
> On Mon, 11 Dec 2023, 17:08 Jingwen Wu via Gcc, wrote:
>
> > Hello, I'm sorry to bother you. And I have some gcc compiler optimization
> > questions to ask you.
> > First of all, I used csmith tools to generate c files randomly. Meanwhile,
>
On Mon, 11 Dec 2023, 17:08 Jingwen Wu via Gcc, wrote:
> Hello, I'm sorry to bother you. And I have some gcc compiler optimization
> questions to ask you.
> First of all, I used csmith tools to generate c files randomly. Meanwhile,
> the final running result was the checksum for global variables i
Hi,
First, please ignore everything Dave Blanchard writes. I don't know
why, but he likes to post angry, rude and unhelpful messages to this list.
Secondly, this is the wrong list. gcc-help would be the correct list,
as you are asking for help with gcc. This list is for discussions on
the
Ignore the troll
On Mon, 11 Dec 2023, 17:28 Dave Blanchard, wrote:
> Hi Jingwen,
>
> This is the same GCC which in recent versions produces something like two
> dozen extraneous, useless, no-op instructions when doing a simple 64-bit
> math operation on 32-bit systems, and does not use SSE prope
Hi Jingwen,
This is the same GCC which in recent versions produces something like two dozen
extraneous, useless, no-op instructions when doing a simple 64-bit math
operation on 32-bit systems, and does not use SSE properly either. In each
major release these problems get worse. The code generat
Hello, I'm sorry to bother you. And I have some gcc compiler optimization
questions to ask you.
First of all, I used csmith tools to generate c files randomly. Meanwhile,
the final running result was the checksum for global variables in a c file.
For the two c files in the attachment, I performed t
Hello, I'm sorry to bother you. And I have some gcc compiler optimization
questions to ask you.
First of all, I used csmith tools to generate c files randomly. Meanwhile,
the final running result was the checksum for global variables in a c file.
For the two c files in the attachment, I performed t
Hello, I'm sorry to bother you. And I have some gcc compiler optimization
questions to ask you.
First of all, I used csmith tools to generate c files randomly. Meanwhile,
the final running result was the checksum for global variables in a c file.
For the two c files in the attachment, I performed t
Hello, I'm sorry to bother you. And I have some gcc compiler optimization
questions to ask you.
First of all, I used csmith tools to generate c files randomly. Meanwhile,
the final running result is the checksum for global variables in a c file.
For the two c files in the attachment, I performed th
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