dmantipov added a comment.
Thanks @MaskRay for the method, some of my numbers are shown below.
Before:
# strace -fc -e file /home/antipov/.local/llvm-12.0.0/bin/clang++ test.cc
% time seconds usecs/call calls errors syscall
------ ----------- ----------- --------- --------- ----------------
100.00 0.004000 12 333 254 openat
0.00 0.000000 0 60 open
0.00 0.000000 0 120 78 stat
0.00 0.000000 0 8 lstat
0.00 0.000000 0 68 53 access
0.00 0.000000 0 3 execve
0.00 0.000000 0 1 rename
0.00 0.000000 0 4 unlink
0.00 0.000000 0 7 readlink
0.00 0.000000 0 1 chmod
------ ----------- ----------- --------- --------- ----------------
100.00 0.004000 6 605 385 total
# strace -fc -e file /home/antipov/.local/llvm-12.0.0/bin/clang++ -target
mips-img-linux-gnu
--gcc-toolchain=/home/antipov/.local/mips-img-linux-gnu/2017.10-05
--sysroot=/home/antipov/.local/mips-img-linux-gnu/2017.10-05/sysroot/mips-r6-hard
test.cc
% time seconds usecs/call calls errors syscall
------ ----------- ----------- --------- --------- ----------------
0.00 0.000000 0 60 open
0.00 0.000000 0 125 76 stat
0.00 0.000000 0 93 lstat
0.00 0.000000 0 72 56 access
0.00 0.000000 0 3 execve
0.00 0.000000 0 1 rename
0.00 0.000000 0 4 unlink
0.00 0.000000 0 7 readlink
0.00 0.000000 0 1 chmod
0.00 0.000000 0 234 157 openat
------ ----------- ----------- --------- --------- ----------------
100.00 0.000000 0 600 289 total
After:
# strace -fc -e file /home/antipov/.local/llvm-12.0.0/bin/clang++ test.cc
% time seconds usecs/call calls errors syscall
------ ----------- ----------- --------- --------- ----------------
0.00 0.000000 0 60 open
0.00 0.000000 0 128 84 stat
0.00 0.000000 0 8 lstat
0.00 0.000000 0 68 53 access
0.00 0.000000 0 3 execve
0.00 0.000000 0 1 rename
0.00 0.000000 0 4 unlink
0.00 0.000000 0 7 readlink
0.00 0.000000 0 1 chmod
0.00 0.000000 0 245 166 openat
------ ----------- ----------- --------- --------- ----------------
100.00 0.000000 0 525 303 total
# strace -fc -e file /home/antipov/.local/llvm-12.0.0/bin/clang++ -target
mips-img-linux-gnu
--gcc-toolchain=/home/antipov/.local/mips-img-linux-gnu/2017.10-05
--sysroot=/home/antipov/.local/mips-img-linux-gnu/2017.10-05/sysroot/mips-r6-hard
test.cc
% time seconds usecs/call calls errors syscall
------ ----------- ----------- --------- --------- ----------------
0.00 0.000000 0 60 open
0.00 0.000000 0 131 80 stat
0.00 0.000000 0 93 lstat
0.00 0.000000 0 72 56 access
0.00 0.000000 0 3 execve
0.00 0.000000 0 1 rename
0.00 0.000000 0 4 unlink
0.00 0.000000 0 7 readlink
0.00 0.000000 0 1 chmod
0.00 0.000000 0 200 123 openat
------ ----------- ----------- --------- --------- ----------------
100.00 0.000000 0 572 259 total
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D87901/new/
https://reviews.llvm.org/D87901
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