similar to: [LLVMdev] Adding "S" suffixed ARM and Thumb2 instructions

Hello everyone, I've added the "S" suffixed versions of ARM and Thumb2 instructions to tablegen. Those are, for example, "movs" or "muls". Of course, some instructions have already had their twins, such as add/adds, and I leaved them untouched. Besides, I propose the codegen optimization based on them, which removes the redundant comparison in patterns like orr

Hello everyone, I've added suffixed versions of ARM and Thumb2 instructions to tablegen. That is, for example, "movs" or "orrs". I implemented a rather simple codegen optimization which removes the comparison in patterns like orr r1, r2 ---> orrs r1, r2 cmp r1, 0 It works and have already shown nice acceleration (e.g., 3.3% in SQLite). I have a few

On Feb 17, 2011, at 10:35 PM, Вадим Марковцев wrote: > Hello everyone, > > I've added the "S" suffixed versions of ARM and Thumb2 instructions to tablegen. Those are, for example, "movs" or "muls". > Of course, some instructions have already had their twins, such as add/adds, and I leaved them untouched. Adding separate "s" instructions is

Hello. I experience a problem when I try to run LLVM tests on the ARM "Beagle" board with Debian Lenny installed on it. When I execute "make check", I get the following output: llvm[0]: Running test suite make[1]: Entering directory /mnt/markhor/llvm/nativeBuild/test Making a new site.exp file... ( ulimit -t 600 ; ulimit -d 512000 ; ulimit -m 512000 ; ulimit -v 512000 ; \

Hello. I experience a problem when I try to run LLVM tests on the ARM "Beagle" board with Debian Lenny installed on it. When I execute "make check", I get the following output: llvm[0]: Running test suite make[1]: Entering directory `/mnt/markhor/llvm/nativeBuild/test' Making a new site.exp file... ( ulimit -t 600 ; ulimit -d 512000 ; ulimit -m 512000 ; ulimit -v 512000

Hello. I experience a problem when I try to run LLVM tests on the ARM "Beagle" board with Debian Lenny installed on it. When I execute "make check", I get the following output: llvm[0]: Running test suite make[1]: Entering directory /mnt/markhor/llvm/nativeBuild/test Making a new site.exp file... ( ulimit -t 600 ; ulimit -d 512000 ; ulimit -m 512000 ; ulimit -v 512000 ; \

Hello. I experience a problem when I try to run LLVM tests on the ARM "Beagle" board with Debian Lenny installed on it. When I execute "make check", I get the following output: || llvm[0]: Running test suite make[1]: Entering directory `/mnt/markhor/llvm/nativeBuild/test' Making a new site.exp file... ( ulimit -t 600 ; ulimit -d 512000 ; ulimit -m 512000 ; ulimit -v

Hello. I experience a problem when I try to run LLVM tests on the ARM "Beagle" board with Debian Lenny installed on it. When I execute "make check", I get the following output: llvm[0]: Running test suite make[1]: Entering directory `/mnt/markhor/llvm/nativeBuild/test' Making a new site.exp file... ( ulimit -t 600 ; ulimit -d 512000 ; ulimit -m 512000 ; ulimit -v 512000

Hello. I experience a problem when I try to run LLVM tests on the ARM "Beagle" board with Debian Lenny installed on it. When I execute "make check", I get the following output: llvm[0]: Running test suite make[1]: Entering directory `/mnt/markhor/llvm/nativeBuild/test' Making a new site.exp file... ( ulimit -t 600 ; ulimit -d 512000 ; ulimit -m 512000 ; ulimit -v 512000

Hello. I experience a problem when I try to run LLVM tests on the ARM "Beagle" board with Debian Lenny installed on it. When I execute "make check", I get the following output: llvm[0]: Running test suite make[1]: Entering directory `/mnt/markhor/llvm/nativeBuild/test' Making a new site.exp file... ( ulimit -t 600 ; ulimit -d 512000 ; ulimit -m 512000 ; ulimit -v 512000

Hello. I experience a problem when I try to run LLVM tests on the ARM "Beagle" board with Debian Lenny installed on it. When I execute "make check", I get the following output: llvm[0]: Running test suite make[1]: Entering directory `/mnt/markhor/llvm/nativeBuild/test' Making a new site.exp file... ( ulimit -t 600 ; ulimit -d 512000 ; ulimit -m 512000 ; ulimit -v 512000

Hello. I experience a problem when I try to run LLVM tests on the ARM "Beagle" board with Debian Lenny installed on it. When I execute "make check", I get the following output: llvm[0]: Running test suite make[1]: Entering directory `/mnt/markhor/llvm/nativeBuild/test' Making a new site.exp file... ( ulimit -t 600 ; ulimit -d 512000 ; ulimit -m 512000 ; ulimit -v 512000

Hello. I experience a problem when I try to run LLVM tests on the ARM "Beagle" board with Debian Lenny installed on it. When I execute "make check", I get the following output: llvm[0]: Running test suite make[1]: Entering directory `/mnt/markhor/llvm/nativeBuild/test' Making a new site.exp file... ( ulimit -t 600 ; ulimit -d 512000 ; ulimit -m 512000 ; ulimit -v 512000

Hi. I am trying to run LLVM with JIT on ARM processor (Android phone). Currently I have problems using external functions. Any call to external function crashes and gives me signal 11 (SIGSEGV) at some random address. I'm trying to run following C code: *** extern void add1(int* x); int main() { int a = 10; int b = 20; add1(&b); int c = a + b; return c; } *** It gives

On Sun, Feb 4, 2018 at 9:59 PM, Victor Leschuk <vleschuk at accesssoftek.com> wrote: > Hello David! > > I have recently started acquaintance with PGO in LLVM/clang and found > your e-mail thread: > http://lists.llvm.org/pipermail/llvm-dev/2016-May/099395.html . Here you > posted a nice list of optimizations that use profiling and of those > which could be using but

Victor, thanks for the experiment. My suspicion is it is due to the remaining issues with block layout -- especially with loop rotation (with PGO). Another problem is that tail dup is not happening after loop rotation which can limit the effectiveness of loop rotation. I tried the internal option -mllvm -force-precise-rotation-cost and there is about 10% speedup with -fprofile-use. This option

Hello David, thanks for detailed response! Do you have any tests that you use to measure the PGO effectiveness? I have tested clang version 6.0 with the same sample that Jie Chen used in 2016 and actually both frontend-based PGO and IR-based make code run slower, see the average time: clang++ -O3: 3.15 sec  clang++ -O3 and -fprofile-instr-use: 3.160 sec clang++ -O3 and -fprofile-use: 3.180 sec

Does LLVM have loop multiversioning ? it seems it does not with clang++ -O3 -mllvm -debug-pass=Arguments program.c -c bash-4.1$ clang++ -O3 -mllvm -debug-pass=Arguments fast_algorithms.c -c clang-3.6: warning: treating 'c' input as 'c++' when in C++ mode, this behavior is deprecated Pass Arguments: -datalayout -notti -basictti -x86tti -targetlibinfo -no-aa -tbaa -scoped-noalias

Victor, please file a bug tracking the issue. We can put relevant information there including test cases used in the experiment etc. thanks, David On Wed, Feb 7, 2018 at 2:15 PM, Victor Leschuk <vleschuk at accesssoftek.com> wrote: > David, could you please clarify on which code did you gain 10% > improvement? I have run numerous tests with and w/o this option and it > looks

Hello, I've been trying to figure out how to reproduce the results of a single clang -O3 compilation to a binary with a multi-step process using opt. Specifically I have: clang -O3 foo.c -o foo.exe which I want to replicate with: clang -O0 -c -emit-llvm foo.c opt -O3 foo.bc -o foo_o.bc clang foo_o.bc -o foo.exe Any hints / suggestions on what additional flags I need to produce the same