[llvm-commits] CVS: llvm/docs/CommandGuide/lli.html
Brian Gaeke
gaeke at cs.uiuc.edu
Sun Oct 19 13:04:01 PDT 2003
Changes in directory llvm/docs/CommandGuide:
lli.html updated: 1.6 -> 1.7
---
Log message:
Mostly rewritten.
---
Diffs of the changes: (+60 -17)
Index: llvm/docs/CommandGuide/lli.html
diff -u llvm/docs/CommandGuide/lli.html:1.6 llvm/docs/CommandGuide/lli.html:1.7
--- llvm/docs/CommandGuide/lli.html:1.6 Tue Oct 7 15:12:04 2003
+++ llvm/docs/CommandGuide/lli.html Sun Oct 19 13:03:11 2003
@@ -25,15 +25,19 @@
DESCRIPTION
</h3>
-The <tt>lli</tt> command is the LLVM interpreter. It takes a program in LLVM
-bytecode format and executes it using an interpreter or a Just In Time (JIT)
-compiler. <tt>lli</tt> takes all of the same code generator option as the
-<tt><a href="llc.html">llc</a></tt> tool as well.
+<tt>lli</tt> directly executes programs in LLVM format.
+It takes a program in LLVM
+bytecode format and executes it using a just-in-time
+compiler, if one is available for the current architecture, or an interpreter.
+<tt>lli</tt> takes all of the same code generator options as the
+<tt><a href="llc.html">llc</a></tt> tool, but they are only applicable when
+the just-in-time compiler is being used.
<p>
-If filename is not specified, then lli reads its input from standard input.
+If filename is not specified, then <tt>lli</tt> reads the LLVM bytecode for
+the program from standard input.
<p>
-The optional "args" specified on the command line are passed to the executed
+The optional "args" specified on the command line are passed to the
program as arguments.
<p>
@@ -43,34 +47,74 @@
</h3>
<ul>
- <li> -array-checks (interpreter specific)
+ <li> <tt>-array-checks</tt>
<br>
- Enable array bound checks.
+ Enable array bound checks. If an LLVM program attempts to access an
+ element of an array which is not within the size of that array,
+ <tt>lli</tt> will print an error message and call <tt>abort(3)</tt>.
+ This is presently only applicable to the interpreter.
<p>
- <li> -help
+ <li> <tt>-help</tt>
<br>
Print a summary of command line options.
<p>
- <li> -stats
+ <li> <tt>-stats</tt>
<br>
- Print statistics.
+ Print statistics from the code-generation passes. This is only meaningful
+ for the just-in-time compiler, at present.
<p>
- <li> -time-passes
+ <li> <tt>-time-passes</tt>
<br>
- Record the amount of time needed for each pass and print it to standard
- error.
+ Record the amount of time needed for each code-generation pass and print
+ it to standard error.
<p>
+
+ <li> <tt>-march=<arch></tt>
+ <br>
+ Use the specified non-default architecture when selecting a code generator
+ for the just-in-time compiler. This may result in a crash if you pick an
+ architecture which is not compatible with the hardware you are running
+ <tt>lli</tt> on.
+ <p>
+
+ <li> <tt>-quiet, -q</tt>
+ <br>
+ Do not print any output about the return values of functions.
+ This is presently only applicable to the interpreter.
+ <p>
+
+ <li> <tt>-force-interpreter={false,true}</tt>
+ <br>
+ If set to true, use the interpreter even if a just-in-time compiler is
+ available for this architecture. Defaults to false.
+ <p>
+
+ <li> <tt>-trace</tt>
+ <br>
+ Print an LLVM-instruction-level dynamic execution trace. This is
+ presently only applicable to the interpreter.
+ <p>
+
+ <li> <tt>-f=<name></tt>
+ <br>
+ Call the function named <tt><name></tt> to start the program.
+ Note: The function is assumed to have the C signature <tt>int
+ <tt><name></tt> (int, char **, char **)</tt>.
+ If you try to use this option to call a function of incompatible type,
+ undefined behavior may result. Defaults to "main".
+ <p>
+
</ul>
<h3>
EXIT STATUS
</h3>
-If lli succeeds, it will exit with 0. Otherwise, if an error occurs, it
-will exit with a non-zero value.
+If <tt>lli</tt> fails to load the program, it will exit with an exit code of 1.
+Otherwise, it will return the exit code of the program it executes.
<h3>
SEE ALSO
@@ -81,4 +125,3 @@
Maintained by the <a href="http://llvm.cs.uiuc.edu">LLVM Team</a>.
</body>
</html>
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