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| .IX Title "LLVM-PROF 1" |
| .TH LLVM-PROF 1 "2006-03-13" "CVS" "LLVM Command Guide" |
| .SH "NAME" |
| llvm\-prof \- print execution profile of LLVM program |
| .SH "SYNOPSIS" |
| .IX Header "SYNOPSIS" |
| \&\fBllvm-prof\fR [\fIoptions\fR] [\fIbytecode file\fR] [\fIllvmprof.out\fR] |
| .SH "DESCRIPTION" |
| .IX Header "DESCRIPTION" |
| The \fBllvm-prof\fR tool reads in an \fIllvmprof.out\fR file (which can |
| optionally use a specific file with the third program argument), a bytecode file |
| for the program, and produces a human readable report, suitable for determining |
| where the program hotspots are. |
| .PP |
| This program is often used in conjunction with the \fIutils/profile.pl\fR |
| script. This script automatically instruments a program, runs it with the \s-1JIT\s0, |
| then runs \fBllvm-prof\fR to format a report. To get more information about |
| \&\fIutils/profile.pl\fR, execute it with the \fB\-\-help\fR option. |
| .SH "OPTIONS" |
| .IX Header "OPTIONS" |
| .IP "\fB\-\-annotated\-llvm\fR or \fB\-A\fR" 4 |
| .IX Item "--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. |
| .IP "\fB\-\-print\-all\-code\fR" 4 |
| .IX Item "--print-all-code" |
| Using this option enables the \fB\-\-annotated\-llvm\fR option, but it |
| prints the entire module, instead of just the most commonly executed |
| functions. |
| .IP "\fB\-\-time\-passes\fR" 4 |
| .IX Item "--time-passes" |
| Record the amount of time needed for each pass and print it to standard |
| error. |
| .SH "EXIT STATUS" |
| .IX Header "EXIT STATUS" |
| \&\fBllvm-prof\fR returns 1 if it cannot load the bytecode file or the profile |
| information. Otherwise, it exits with zero. |
| .SH "AUTHOR" |
| .IX Header "AUTHOR" |
| \&\fBllvm-prof\fR is maintained by the \s-1LLVM\s0 Team (<http://llvm.org>). |
