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authorMisha Brukman <brukman+llvm@gmail.com>2004-04-15 20:49:32 +0000
committerMisha Brukman <brukman+llvm@gmail.com>2004-04-15 20:49:32 +0000
commitf4e4feb619fd364bf267e3e2af3afee3fb68a6ab (patch)
tree45985018883f702a155a8356fdb3827701f689b9 /docs/HowToSubmitABug.html
parent6f352f30752aca2e394d5a8f40c10227122d2755 (diff)
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Add note about passing arguments to program being debugged.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12970 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'docs/HowToSubmitABug.html')
-rw-r--r--docs/HowToSubmitABug.html75
1 files changed, 40 insertions, 35 deletions
diff --git a/docs/HowToSubmitABug.html b/docs/HowToSubmitABug.html
index 84d7b8ba10..de9b5b166d 100644
--- a/docs/HowToSubmitABug.html
+++ b/docs/HowToSubmitABug.html
@@ -147,9 +147,10 @@ along with a brief description of the error it caused.</p>
compilation, compile your test-case to a <tt>.s</tt> file with the
<tt>-save-temps</tt> option to <tt><b>llvm-gcc</b></tt>. Then run:</p>
-<pre>
- <b>gccas</b> -debug-pass=Arguments &lt; /dev/null -o - &gt; /dev/null
-</pre>
+<div class="doc_code">
+<p><tt><b>gccas</b> -debug-pass=Arguments &lt; /dev/null -o - &gt; /dev/null
+</tt></p>
+</div>
<p>... which will print a list of arguments, indicating the list of passes that
<tt><b>gccas</b></tt> runs. Once you have the input file and the list of
@@ -170,10 +171,10 @@ compilation, gather all of the <tt>.o</tt> bytecode files and libraries that are
being linked together (the "<tt><b>llvm-gcc</b> -v</tt>" output should include
the full list of objects linked). Then run:</p>
-<pre>
- <b>llvm-as</b> &lt; /dev/null &gt; null.bc
- <b>gccld</b> -debug-pass=Arguments null.bc
-</pre><p>
+<div class="doc_code">
+<p><tt><b>llvm-as</b> &lt; /dev/null &gt; null.bc
+ <b>gccld</b> -debug-pass=Arguments null.bc</tt></p>
+</div>
<p>... which will print a list of arguments, indicating the list of passes that
<tt><b>gccld</b></tt> runs. Once you have the input files and the list of
@@ -194,9 +195,9 @@ files and a list of passes which crash when run on the specified input. In
order to reduce the list of passes (which is probably large) and the input to
something tractable, use the <tt><b>bugpoint</b></tt> tool as follows:</p>
-<pre>
- <b>bugpoint</b> &lt;input files&gt; &lt;list of passes&gt;
-</pre><p>
+<div class="doc_code">
+<p><tt><b>bugpoint</b> &lt;input files&gt; &lt;list of passes&gt;</tt></p>
+</div>
<p><tt><b>bugpoint</b></tt> will print a bunch of output as it reduces the
test-case, but it should eventually print something like this:</p>
@@ -231,9 +232,10 @@ finishes its run.</p>
the output through, e.g. C backend, the JIT, or LLC, and a selection of passes,
one of which may be causing the error, and run, for example:</p>
-<pre>
- <b>bugpoint</b> -run-cbe [... optimization passes ...] file-to-test.bc
-</pre>
+<div class="doc_code">
+<p><tt><b>bugpoint</b> -run-cbe [... optimization passes ...] file-to-test.bc
+--args -- [program arguments]</tt></p>
+</div>
<p><tt>bugpoint</tt> will try to narrow down your list of passes to the one pass
that causes an error, and simplify the bytecode file as much as it can to assist
@@ -260,15 +262,17 @@ Backend, and then link in the shared object it generates.</p>
<p>To debug the JIT:</p>
-<pre>
- <b>bugpoint</b> -run-jit -output=[correct output file] [bytecodefile]
-</pre>
+<div class="doc_code">
+<p><tt><b>bugpoint</b> -run-jit -output=[correct output file] [bytecode file]
+--args -- [program arguments]</tt></p>
+</div>
<p>Similarly, to debug the LLC, one would run:</p>
-<pre>
- <b>bugpoint</b> -run-llc -output=[correct output file] [bytecodefile]
-</pre>
+<div class="doc_code">
+<p><tt><b>bugpoint</b> -run-llc -output=[correct output file] [bytecode file]
+--args -- [program arguments]</tt></p>
+</div>
<p>At the end of a successful <tt>bugpoint</tt> run, you will be presented
with two bytecode files: a <em>safe</em> file which can be compiled with the C
@@ -280,27 +284,28 @@ the following:</p>
<ol>
- <li>Regenerate the shared object from the safe bytecode file:<br>
+ <li><p>Regenerate the shared object from the safe bytecode file:</p>
-<pre>
- <b>llc</b> -march=c safe.bc -o safe.c<br>
- <b>gcc</b> -shared safe.c -o safe.so
-</pre></li>
+ <div class="doc_code">
+ <p><tt><b>llc</b> -march=c safe.bc -o safe.c<br>
+ <b>gcc</b> -shared safe.c -o safe.so</tt></p>
+ </div></li>
- <li>If debugging LLC, compile test bytecode native and link with the shared object:<br>
+ <li><p>If debugging LLC, compile test bytecode native and link with the shared
+ object:</p>
-<pre>
- <b>llc</b> test.bc -o test.s -f<br>
- gcc test.s safe.so -o test.llc<br>
- ./test.llc [program options]
-</pre></li>
+ <div class="doc_code">
+ <p><tt><b>llc</b> test.bc -o test.s -f<br>
+ <b>gcc</b> test.s safe.so -o test.llc<br>
+ ./test.llc [program options]</tt></p>
+ </div></li>
- <li>If debugging the JIT, load the shared object and supply the test
-bytecode:
+ <li><p>If debugging the JIT, load the shared object and supply the test
+ bytecode:</p>
-<pre>
- <b>lli</b> -load=safe.so test.bc [program options]
-</pre></li>
+ <div class="doc_code">
+ <p><tt><b>lli</b> -load=safe.so test.bc [program options]</tt></p>
+ </div></li>
</ol>