search for: xorps

...I found that in some cases llvm generates duplicate loads of double constants, e.g. $ cat t.c double f(double* p, int n) { double s = 0; if (n) s += *p; return s; } $ clang -S -O3 t.c -o - ... f: # @f .cfi_startproc # BB#0: xorps %xmm0, %xmm0 testl %esi, %esi je .LBB0_2 # BB#1: xorps %xmm0, %xmm0 addsd (%rdi), %xmm0 .LBB0_2: ret ... Note that there are 2 xorps instructions, the one in BB#1 being clearly redundant as it's dominated by the first one. Two xorps come fro...

hi alli hope you are all fine,I post this mail with the hope i will find an explanation for my too problems. i ''m actually working on an internship subject about xen technology: i*nstall xorp router in the virtual domain of the xen hypervisor.* this installation should be done on a PC with too NIC. The problem is that i don''t know what is the utility of too NIC in such

..., > e.g. > > $ cat t.c > double f(double* p, int n) > { > double s = 0; > if (n) > s += *p; > return s; > } > $ clang -S -O3 t.c -o - > ... > f: # @f > .cfi_startproc > # BB#0: > xorps %xmm0, %xmm0 > testl %esi, %esi > je .LBB0_2 > # BB#1: > xorps %xmm0, %xmm0 > addsd (%rdi), %xmm0 > .LBB0_2: > ret > ... > Thanks. Please file a bug for this on llvm.org/bugs . The crux of the problem is that machine...

...on release 2.3 but revision 52648 fails, and I suspect that the issue is still present. 2.3 generates the following x86 code: 03A10010 push ebp 03A10011 mov ebp,esp 03A10013 and esp,0FFFFFFF0h 03A10019 movups xmm0,xmmword ptr ds:[141D280h] 03A10020 xorps xmm1,xmm1 03A10023 movaps xmm2,xmm0 03A10026 shufps xmm2,xmm1,32h 03A1002A movaps xmm1,xmm0 03A1002D shufps xmm1,xmm2,84h 03A10031 shufps xmm0,xmm1,23h 03A10035 shufps xmm1,xmm1,40h 03A10039 shufps xmm1,xmm0,2Eh 03A1003D movups x...

http://bugzilla.netfilter.org/show_bug.cgi?id=536 pavlin at icsi.berkeley.edu changed: What |Removed |Added ---------------------------------------------------------------------------- Severity|trivial |blocker Priority|P2 |P1 ------- Comment #1 from pavlin at icsi.berkeley.edu 2008-12-19

Hi all, We want linux (ubuntu) with 2.6 kernel to act as multicast router and to pass multicast packets between different subnets. And linux machine as router has two network cards having two different subnets assigned onto. We first worked "sysctl -w net.ipv4.ip_forward=1" line on linux shell that made linux to work as unicast router. (like host, the multicast packets were discarded at

...ebp + mov ebp, esp + and esp, -16 ; stack realign for SSE instructions 'movaps' and 'addps' + sub esp, 32 + + ;ASSERT(lag > 0) + ;ASSERT(lag <= 12) + ;ASSERT(lag <= data_len) + ;ASSERT(data_len > 0) + + ; for(coeff = 0; coeff < lag; coeff++) + ; autoc[coeff] = 0.0; + xorps xmm5, xmm5 + xorps xmm6, xmm6 + movaps [esp], xmm5 + movaps [esp + 16], xmm6 + + mov edx, [ebp + 12] ; edx == data_len + mov eax, [ebp + 8] ; eax == &data[sample] <- &data[0] + + movss xmm0, [eax] ; xmm0 = 0,0,0,data[0] + add eax, 4 + movaps xmm1, xmm0 ; xmm1 = 0,0,0,data[0] + shu...

...2648 fails, and I suspect > that the issue is still present. > > 2.3 generates the following x86 code: > > 03A10010 push ebp > 03A10011 mov ebp,esp > 03A10013 and esp,0FFFFFFF0h > 03A10019 movups xmm0,xmmword ptr ds:[141D280h] > 03A10020 xorps xmm1,xmm1 > 03A10023 movaps xmm2,xmm0 > 03A10026 shufps xmm2,xmm1,32h > 03A1002A movaps xmm1,xmm0 > 03A1002D shufps xmm1,xmm2,84h > 03A10031 shufps xmm0,xmm1,23h > 03A10035 shufps xmm1,xmm1,40h > 03A10039 shufps xmm1,xmm0,2Eh >...

...oo.s (snip) Code Placement Optimizater SSE execution domain fixup Machine Natural Loop Construction X86 AT&T-Style Assembly Printer Delete Garbage Collector Information foo.s: (edited) _foo: movaps %xmm0, %xmm3 andps %xmm2, %xmm3 andnps %xmm1, %xmm2 movaps %xmm2, %xmm0 xorps %xmm3, %xmm0 ret _bar: movaps %xmm0, %xmm3 andps %xmm2, %xmm3 andnps %xmm1, %xmm2 movaps %xmm2, %xmm0 xorps %xmm3, %xmm0 ret

Hi, I got this error when i tried to type for some of those. "sysctl: unknown oid...." any idea.. my server seems to be very lagged, where else the network connection seems fine, i think BSD itself as my other redhat box is fine. What else can i do to get optimum protection. Thanks. ----- Original Message ----- From: "Per Engelbrecht" <per@xterm.dk> To:

Hi, Whilst doing some QA work on XORP on my desktop, which has fxp0 and msk0, fxp0 got totally hosed. I was running PIM-SM and IGMPv2 router-mode on the box at the time. I wonder if this is related to the problems with fxp multicast transmission I saw back in April. I'm a bit concerned about this as fxp is still a very widespread and useful network chip. I am running

...t for a piece of code allocating a class object (size: 24 bytes) using operator new and then initializing it: 0x00002aaaafc145f3 <+35>: callq 0x2aaaafdf5f90 <operator new(unsigned long)> 0x00002aaaafc145f8 <+40>: mov %rax,%r13 0x00002aaaafc145fb <+43>: xorps %xmm0,%xmm0 => 0x00002aaaafc145fe <+46>: movaps %xmm0,0x0(%r13) The value in %r13 (from the return value of operator new) is not appropriately aligned causing the crash. The memory allocation is done by a custom memory allocator that is returning 8-byte aligned blocks. The memory allo...

...libFLAC\cpu.c 2013-08-16 21:46:42.177485300 +0400 @@ -285,14 +285,7 @@ # ifdef USE_TRY_CATCH_FLAVOR _try { __asm { -# if _MSC_VER <= 1200 - /* VC6 assembler doesn't know SSE, have to emit bytecode instead */ - _emit 0x0F - _emit 0x57 - _emit 0xC0 -# else xorps xmm0,xmm0 -# endif } } _except(EXCEPTION_EXECUTE_HANDLER) { @@ -307,14 +300,7 @@ /* http://www.codeproject.com/cpp/gccasm.asp */ /* http://www.hick.org/~mmiller/msvc_inline_asm.html */ __asm { -# if _MSC_VER <= 1200 - /* VC6 assembler doesn't know SSE, h...

Hi folks, I have set up a cluster on CentOS 5.2 using /etc/cluster/cluster.conf - and it works fine. It's only purpose is to switch a virtual IP between two routers. Now the service is running, I can ping the virtual IP from outside - but this virtual IP is not bound to any interface. How does this work? Can I force the cluster to bind it to a certain interface? I need this because the

...70: v4i64 = and 0x2532070, 0x2532170 [ID=15] >>     0x2532070: v4i64 = bitcast 0x2510740 [ID=14] >>       0x2510740: v8f32 = llvm.x86.avx.cmp.ps.256 0x2510640, 0x2511340, >> 0x2510f40, 0x2511140 [ORD=3] [ID=12] >> ... >> >> The same counts for or and xor where VXORPS etc. should be selected. > > Please file bug reports! It's a problem with integer code. There are no 256-bit integer bitwise instructions in AVX. There are no 256-bit integer instructions period. What's missing is the legalize code to handle this. I have it in our tree. >>...

...xecution domain fixup > Machine Natural Loop Construction > X86 AT&T-Style Assembly Printer > Delete Garbage Collector Information > > foo.s: (edited) > _foo: > movaps %xmm0, %xmm3 > andps %xmm2, %xmm3 > andnps %xmm1, %xmm2 > movaps %xmm2, %xmm0 > xorps %xmm3, %xmm0 > ret

...ger instructions period. > What's missing is the legalize code to handle this. I have it in our > tree. > >> There seems to be some code for this because >> xor<8 x i32> %m, %m >> works, probably because it can get rid of all bitcasts. > > And it can use xorps to implement the operation. Yes, that makes sense. But why does the same not work with "and" and "or" (-> VANDPS/VORPS) ? Anyway, I am looking forward to testing your patches. Would it be possible to send around a notification when the stuff goes upstream? Thanks a lot :)...

I need to send multicast traffic through a GRE tunnel between two Linux routers. The tunnel works for normal IP packets, but I can''t see how to make it work for multicast. Here''s the setup: 10.10.10.0/24 LAN-B--------------RtrB-------------RtrC--------------LAN-C 192.168.2.0/24 192.168.1.0/24 RtrB interfaces: eth0

...g.s .file "shufxbug.ll" .text .globl sample_test .align 16, 0x90 .type sample_test, at function sample_test: # @sample_test # BB#0: # %L.entry movl 4(%esp), %eax movss 304(%eax), %xmm0 xorps %xmm1, %xmm1 movl 8(%esp), %eax movups %xmm1, 624(%eax) pshufd $65, %xmm0, %xmm0 # xmm0 = xmm0[1,0,0,1] movdqu %xmm0, 608(%eax) ret .Ltmp0: .size sample_test, .Ltmp0-sample_test .section ".note.GNU-stack","", at progbits...

...m-toolchain/branches/llvm-toolchain-3.4-3.4+205824/test/CodeGen/X86/fp-fast.ll -- Exit Code: 1 Command Output (stderr): -- /home/sylvestre/dev/debian/pkg-llvm/llvm-toolchain/branches/llvm-toolchain-3.4-3.4+205824/test/CodeGen/X86/fp-fast.ll:65:10: error: expected string not found in input ; CHECK: xorps ^ <stdin>:78:2: note: scanning from here .align 4, 0x90 ^ <stdin>:83:3: note: possible intended match here vmovss LCPI5_0(%rip), %xmm1 ^ /home/sylvestre/dev/debian/pkg-llvm/llvm-toolchain/branches/llvm-toolchain-3.4-3.4+205824/test/CodeGen/X86/fp-fast.ll:77:10: error: expe...