NAME¶
llvm-prof - print execution profile of LLVM program
SYNOPSIS¶
llvm-prof [
options] [
bitcode file] [
llvmprof.out]
DESCRIPTION¶
The
llvm-prof tool reads in an
llvmprof.out file (which can
optionally use a specific file with the third program argument), a bitcode
file for the program, and produces a human readable report, suitable for
determining where the program hotspots are.
This program is often used in conjunction with the
utils/profile.pl
script. This script automatically instruments a program, runs it with the JIT,
then runs
llvm-prof to format a report. To get more information about
utils/profile.pl, execute it with the
-help option.
OPTIONS¶
- --annotated-llvm or -A
- In addition to the normal report printed, print out the
code for the program, annotated with execution frequency information. This
can be particularly useful when trying to visualize how frequently basic
blocks are executed. This is most useful with basic block profiling
information or better.
- --print-all-code
- Using this option enables the --annotated-llvm
option, but it prints the entire module, instead of just the most commonly
executed functions.
- --time-passes
- Record the amount of time needed for each pass and print it
to standard error.
EXIT STATUS¶
llvm-prof returns 1 if it cannot load the bitcode file or the profile
information. Otherwise, it exits with zero.
AUTHOR¶
llvm-prof is maintained by the LLVM Team
(<
http://llvm.org/>).