search for: pix2

Hello, I was looking at the following test case which is very relevant in imaging applications. int sad(unsigned char *pix1, unsigned char *pix2) { int sum = 0; for( int x = 0; x < 16; x++ ) { sum += abs( pix1[x] - pix2[x] ); } return sum; } The llvm IR generated after all the IR optimizations is ..... %9 = bitcast i8* %8 t...

...2:15:12 PM > Subject: RE: [LLVMdev] supporting SAD in loop vectorizer > > Here's the simple SAD code: > --------------------------------------------------- > 1 #include <stdlib.h> > 2 > 3 extern int ly,lx; > 4 int sad_c( unsigned char *pix1, unsigned char *pix2) > 5 { > 6 int i_sum = 0; > 7 for( int x = 0; x < lx; x++ ) > 8 i_sum += abs( pix1[x] - pix2[x] ); > 9 return i_sum; > 10 } > 11 > ----------------------------------------------------- > > The loop vec...

...: [LLVMdev] supporting SAD in loop vectorizer > > > > Here's the simple SAD code: > > --------------------------------------------------- > > 1 #include <stdlib.h> > > 2 > > 3 extern int ly,lx; > > 4 int sad_c( unsigned char *pix1, unsigned char *pix2) > > 5 { > > 6 int i_sum = 0; > > 7 for( int x = 0; x < lx; x++ ) > > 8 i_sum += abs( pix1[x] - pix2[x] ); > > 9 return i_sum; > > 10 } > > 11 > > ----------------------------------------------------- > > > > The loop vectorizer does v...

...15 10:14:44 PM >> Subject: [LLVMdev] RFC: generation of PSAD instruction >> >> Hello, >> >> I was looking at the following test case which is very relevant in >> imaging applications. >> >> >> >> int sad(unsigned char *pix1, unsigned char *pix2) >> >> { >> >> int sum = 0; >> >> for( int x = 0; x < 16; x++ ) >> >> { >> >> sum += abs( pix1[x] - pix2[x] ); >> >> } >> >> return sum; >> >> } >> >> >> >> The llvm IR generat...

----- Original Message ----- > From: "Renato Golin" <renato.golin at linaro.org> > To: "Dibyendu Das" <Dibyendu.Das at amd.com> > Cc: llvmdev at cs.uiuc.edu > Sent: Tuesday, November 4, 2014 5:23:30 AM > Subject: Re: [LLVMdev] supporting SAD in loop vectorizer > > On 4 November 2014 11:06, Das, Dibyendu <Dibyendu.Das at amd.com> wrote:

...| ^ 192.168.x.x/24 192.168.25.x/24 distribution upstream if: 192.168.24.1/24 ubuntu eth0: 192.168.24.2/24 ubuntu eth1: 192.168.25.1 ipcop downsteam ip: 192.168.25.25 pix1 downstream if: 192.168.25.20 pix2 downstream if: 192.168.25.21 The Ubuntu machine also has an interface in the cogent DMZ using a public ip address (xxx.xxx.xxx.75). Here''e the result of ip addr ls: 1: lo: <LOOPBACK,UP> mtu 16436 qdisc noqueue link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00...