similar to: Possible MemCpyOpt bug?

At 2013-12-15 22:43:34,"Caldarale, Charles R" <Chuck.Caldarale at unisys.com> wrote: >> From: llvmdev-bounces at cs.uiuc.edu [mailto:llvmdev-bounces at cs.uiuc.edu] >> On Behalf Of Haishan >> Subject: [LLVMdev] Question about Pre-RA-schedule in LLVM3.3 > >> My clang version is 3.3 and debug build. > >> //test.c >> int a[6] = {1, 2, 3, 4, 5,

The flag -enable-aa-sched-mi should do what you want you want in the MachineScheduler pass. If you want to do it in the selection DAG, there is a subtarget hook that might do it: TargetSubtargetInfo::useAA() LLVM won’t generate the schedule you want anyway for Intel core processors, but the alias analysis can be useful in general. -Andy On Dec 16, 2013, at 6:03 AM, Haishan <hndxvon at

Hi, I compile a case (test.c) to get object machine file (test.o) using clang as follows: "clang -target arm -integrated-as -c test.c -o test.o" My clang version is 3.3 and debug build. //test.c int a[6] = {1, 2, 3, 4, 5, 6} int main() { a[0] = a[5]; a[1] = a[4]; a[2] = a[5]; } //end test.c Then test.dump is generated by using the objdump tool. //test.dump ldr r1, [r0, #20]

> From: llvmdev-bounces at cs.uiuc.edu [mailto:llvmdev-bounces at cs.uiuc.edu] > On Behalf Of Haishan > Subject: [LLVMdev] Question about Pre-RA-schedule in LLVM3.3 > My clang version is 3.3 and debug build. > //test.c > int a[6] = {1, 2, 3, 4, 5, 6} > int main() { >  a[0] = a[5]; >  a[1] = a[4]; >  a[2] = a[5]; > } > //end test.c > Then test.dump is

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Hello. I have problem as below: Nov 8 10:41:52 store1 dovecot: auth: Debug: auth(master at example.com,::1,master,</qEuMafqyAAAAAAAAAAAAAAAAAAAAAAB>): Master user lookup for login: jkrzyz at example.com Nov 8 10:41:52 store1 dovecot: auth: Debug: passwd-file(master at example.com,::1,master,</qEuMafqyAAAAAAAAAAAAAAAAAAAAAAB>): lookup: user=master at example.com

Hey, I have two identical machines setup with a RAID 5 array. One of them is used for failovers and data from the master is synced everyday using rsync to the failover machine. The data on this disks are usually intranet KB's, DB's etc.. The RAID 5 arrays are formatted using the default options i,e mkfs.ext3 /dev/Xda. The RAID controller is 3ware escalade and each disk member in the RAID

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Hi, I'm getting a lot of the following messages in my mail.err log. Jul 12 11:25:51 mink dovecot: IMAP(user1 at domain1.net): Corrupted transaction log file /virtual/store1/mail/u/user1_domain1.net/Maildir/.Sent/dovecot.index.log: Append with UID 925, but next_uid = 926 Jul 12 12:44:56 mink dovecot: IMAP(user2 at domain1.net): Corrupted transaction log file

I can't figure out what's wrong with my config, I can see the share \\beata\anders, but not store0 or store1; # smb.conf is the main Samba configuration file. You find a full commented # version at /usr/share/doc/packages/samba/examples/smb.conf.SUSE if the # samba-doc package is installed. # Date: 2011-03-01 [global] workgroup = NORRBRING passdb backend = tdbsam

I've been having some strange problems with R CMD check in the last couple of days, but now believe I have localized the issue. I had been running Ubuntu Hardy on one drive and then upgraded to Jaunty, but put Jaunty on a different drive. I continue to be able to boot Hardy when I wish. I soft-linked my R working area i.e., /home/john/Rstuff ----> /media/lnx804/home/john/Rstuff

Hi, i have seen a post with the same title, but didn''t help a lot -it mentioned, that the image was for LVM, which i don''t think is my case. I downloaded the debian31 image from http://jailtime.org. Initially, i had some problems and changed the configuration file a little. Here it is now: ----------- kernel = "/boot/vmlinuz-2.6-xenU" memory = 256 name =

OK, with the restrict type qualifier, it is a little bit better: The IR's function signature becomes: define void @foo(i32* noalias %a, i32* noalias %b, i32* noalias %c) nounwind { Now the AA result: Function: foo: 13 pointers, 0 call sites NoAlias: i32* %a, i32* %b NoAlias: i32* %a, i32* %c NoAlias: i32* %b, i32* %c NoAlias: i32* %a, i32** %a_addr NoAlias:

On Fri, Sep 21, 2012 at 3:08 PM, Welson Sun <welson.sun at gmail.com> wrote: > OK, with the restrict type qualifier, it is a little bit better: > > The IR's function signature becomes: > define void @foo(i32* noalias %a, i32* noalias %b, i32* noalias %c) nounwind > { > > Now the AA result: > Function: foo: 13 pointers, 0 call sites > NoAlias: i32* %a,

Here is the result of running mem2reg then basicaa, it is even worse: (%a should be alias to %0, and partial alias to %3) opt -mem2reg -basicaa -aa-eval -print-all-alias-modref-info < foo.s > /dev/null Function: foo: 6 pointers, 0 call sites NoAlias: i32* %a, i32* %b NoAlias: i32* %a, i32* %c NoAlias: i32* %b, i32* %c PartialAlias: i32* %1, i32* %a NoAlias:

Hi, Thanks for your advice. I have tried this way: opt -mem2reg test.bc -o mem2reg.bc llvm-dis mem2reg.bc opt -functionattrs -basicaa -aa-eval -print-all-alias-modref-info mem2reg.bc The content of main() in mem2reg.ll: define i32 @main() nounwind { entry: %"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0] %0 = call %struct.Location* @getNewLocation(i32 0, i32

Hi there, I am trying to understand how AliasAnalysis works out in LLVM. I used the following simple test-case (test4.c): -- void test() { int *jj, *kk; int aa = 100; jj = &aa; *jj = 300; } int main() { test(); return 0; } -- Then I did "llvm-gcc -emit-llvm -c -o test4.bc test4.c" to get bc. I tried the following 2 ways to get what I expect to get as

On Sun, Nov 14, 2010 at 2:37 PM, Kenneth Uildriks <kennethuil at gmail.com> wrote: > On Sun, Nov 14, 2010 at 11:45 AM, Reid Kleckner <reid.kleckner at gmail.com> wrote: >> On Sun, Nov 14, 2010 at 11:17 AM, Kenneth Uildriks <kennethuil at gmail.com> wrote: >>> To fix that and compile C++ correctly while aggressively >>> devirtualizing it, we would need

Without the patch is also returns the wrong answer for all of these, it just doesn't cause LICM to promote because it returns PartialAlias (which is still wrong). We return may-alias instead, and now suddenly it's happy to promote them. The broken noalias results exist both before and after my patch: ===== Alias Analysis Evaluator Report ===== 521 Total Alias Queries Performed

Hi, Using this option I do get all the vars as may alias ie MayAlias: i32* %j.0, i32* %k MayAlias: i32* %i.0, i32* %k MayAlias: i32* %i.0, i32* %j.0 Is there any other analysis which will give them as must aliases. Actually what I want to do is implement a flow sensitive points-to(not alias) analysis and then use that information for some optimizations like PRE. Will that be