"Rohit Arul Raj" <[EMAIL PROTECTED]> writes:
> The relevant part of RTL dump of fgcse pass is given below:
>
> (insn 13 12 50 0 (set (reg:CC 21 cc)
> (compare:CC (reg:SI 29 [ n ])
> (const_int 30 [0x1e]))) 68 {*cmpsi_internal} (nil)
> (nil))
>
> (insn 50 13 53 0 (paralle
"Rohit Arul Raj" <[EMAIL PROTECTED]> writes:
> The problem due to which the below mentioned program was not working
> is because of CODE HOISTING pass. I just masked the code hoisting step
> and the program worked fine.
At this point, if you want us to be able to give you useful
suggestions, you
Hi all,
The problem due to which the below mentioned program was not working
is because of CODE HOISTING pass. I just masked the code hoisting step
and the program worked fine.
1. The instruction no's 11, 12, 13 are removed when -Os optimization
is enabled (it considers n, h as dead). Is there a
"Rohit Arul Raj" <[EMAIL PROTECTED]> writes:
> > > This small bit of code worked fine with all optimization except Os.
> > >
> > > unsigned int n = 30;
> > > void x ()
> > > {
> > > unsigned int h;
> > > h = n <= 30; // Line 1
> > > if (h)
> > >p = 1;
> > > else
> > >p = 0;
>
> since p is a global variable, it can be used in other functions. Any
> other causes?
The first thing to do is to post a reproducer. As Ian said, your code doesn't
even compile...
--
Eric Botcazou
Rohit Arul Raj wrote:
I am working with a GCC Cross compiler version 4.1.1.
This small bit of code worked fine with all optimization except Os.
unsigned int n = 30;
void x ()
{
unsigned int h;
h = n <= 30; // Line 1
if (h)
p = 1;
else
p = 0;
}
[...]
3. What are the probabl
On 26 Oct 2006 22:02:04 -0700, Ian Lance Taylor <[EMAIL PROTECTED]> wrote:
"Rohit Arul Raj" <[EMAIL PROTECTED]> writes:
> This small bit of code worked fine with all optimization except Os.
>
> unsigned int n = 30;
> void x ()
> {
> unsigned int h;
> h = n <= 30; // Line 1
> if (h)
"Rohit Arul Raj" <[EMAIL PROTECTED]> writes:
> This small bit of code worked fine with all optimization except Os.
>
> unsigned int n = 30;
> void x ()
> {
> unsigned int h;
> h = n <= 30; // Line 1
> if (h)
>p = 1;
> else
>p = 0;
> }
>
> when we tried to debug the emitted
On Mon, 2006-10-23 at 16:14 +0530, Rohit Arul Raj wrote:
> Hi all,
>
> This small bit of code worked fine with all optimization except Os.
If you are working with 4.0 and greater, there are optimizations that
happen before RTL, called the Tree-ssa optimizations. The optimization
you are noticing
