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Passes.html now 'passes' validation.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43335 91177308-0d34-0410-b5e6-96231b3b80d8
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Gordon Henriksen 2007-10-25 08:58:56 +00:00
parent 1f5cce0b7b
commit ddaa61d8b5
1 changed files with 21 additions and 19 deletions
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40
docs/Passes.html
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@ -4,6 +4,7 @@
<head> <head>
<title>LLVM's Analysis and Transform Passes</title> <title>LLVM's Analysis and Transform Passes</title>
<link rel="stylesheet" href="llvm.css" type="text/css"> <link rel="stylesheet" href="llvm.css" type="text/css">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
</head> </head>
<body> <body>
@ -20,7 +21,7 @@ while (<HTML>) {
m:^<tr><td><a href="#(.*)">-.*</a></td><td>.*</td></tr>$: or next; m:^<tr><td><a href="#(.*)">-.*</a></td><td>.*</td></tr>$: or next;
$order{$1} = sprintf("%03d", 1 + int %order); $order{$1} = sprintf("%03d", 1 + int %order);
} }
open HELP, "../Release/bin/opt --help|" or die "open: opt --help: $!\n"; open HELP, "../Release/bin/opt -help|" or die "open: opt -help: $!\n";
while (<HELP>) { while (<HELP>) {
m:^ -([^ ]+) +- (.*)$: or next; m:^ -([^ ]+) +- (.*)$: or next;
my $o = $order{$1}; my $o = $order{$1};
@ -66,8 +67,8 @@ EOT
</div> </div>
<div class="doc_text" > <div class="doc_text" >
<table> <table>
<tr><th colspan="3"><b>ANALYSIS PASSES</b></th></tr> <tr><th colspan="2"><b>ANALYSIS PASSES</b></th></tr>
<tr><th>Option</th><th>Name</th><th>Directory</th></tr> <tr><th>Option</th><th>Name</th></tr>
<tr><td><a href="#aa-eval">-aa-eval</a></td><td>Exhaustive Alias Analysis Precision Evaluator</td></tr> <tr><td><a href="#aa-eval">-aa-eval</a></td><td>Exhaustive Alias Analysis Precision Evaluator</td></tr>
<tr><td><a href="#anders-aa">-anders-aa</a></td><td>Andersen's Interprocedural Alias Analysis</td></tr> <tr><td><a href="#anders-aa">-anders-aa</a></td><td>Andersen's Interprocedural Alias Analysis</td></tr>
<tr><td><a href="#basicaa">-basicaa</a></td><td>Basic Alias Analysis (default AA impl)</td></tr> <tr><td><a href="#basicaa">-basicaa</a></td><td>Basic Alias Analysis (default AA impl)</td></tr>
@ -105,8 +106,8 @@ EOT
<tr><td><a href="#targetdata">-targetdata</a></td><td>Target Data Layout</td></tr> <tr><td><a href="#targetdata">-targetdata</a></td><td>Target Data Layout</td></tr>
<tr><th colspan="3"><b>TRANSFORM PASSES</b></th></tr> <tr><th colspan="2"><b>TRANSFORM PASSES</b></th></tr>
<tr><th>Option</th><th>Name</th><th>Directory</th></tr> <tr><th>Option</th><th>Name</th></tr>
<tr><td><a href="#adce">-adce</a></td><td>Aggressive Dead Code Elimination</td></tr> <tr><td><a href="#adce">-adce</a></td><td>Aggressive Dead Code Elimination</td></tr>
<tr><td><a href="#argpromotion">-argpromotion</a></td><td>Promote 'by reference' arguments to scalars</td></tr> <tr><td><a href="#argpromotion">-argpromotion</a></td><td>Promote 'by reference' arguments to scalars</td></tr>
<tr><td><a href="#block-placement">-block-placement</a></td><td>Profile Guided Basic Block Placement</td></tr> <tr><td><a href="#block-placement">-block-placement</a></td><td>Profile Guided Basic Block Placement</td></tr>
@ -169,8 +170,8 @@ EOT
<tr><td><a href="#tailduplicate">-tailduplicate</a></td><td>Tail Duplication</td></tr> <tr><td><a href="#tailduplicate">-tailduplicate</a></td><td>Tail Duplication</td></tr>
<tr><th colspan="3"><b>UTILITY PASSES</b></th></tr> <tr><th colspan="2"><b>UTILITY PASSES</b></th></tr>
<tr><th>Option</th><th>Name</th><th>Directory</th></tr> <tr><th>Option</th><th>Name</th></tr>
<tr><td><a href="#deadarghaX0r">-deadarghaX0r</a></td><td>Dead Argument Hacking (BUGPOINT USE ONLY; DO NOT USE)</td></tr> <tr><td><a href="#deadarghaX0r">-deadarghaX0r</a></td><td>Dead Argument Hacking (BUGPOINT USE ONLY; DO NOT USE)</td></tr>
<tr><td><a href="#extract-blocks">-extract-blocks</a></td><td>Extract Basic Blocks From Module (for bugpoint use)</td></tr> <tr><td><a href="#extract-blocks">-extract-blocks</a></td><td>Extract Basic Blocks From Module (for bugpoint use)</td></tr>
<tr><td><a href="#emitbitcode">-emitbitcode</a></td><td>Bitcode Writer</td></tr> <tr><td><a href="#emitbitcode">-emitbitcode</a></td><td>Bitcode Writer</td></tr>
@ -529,15 +530,16 @@ EOT
<p>Correlated Expression Elimination propagates information from conditional <p>Correlated Expression Elimination propagates information from conditional
branches to blocks dominated by destinations of the branch. It propagates branches to blocks dominated by destinations of the branch. It propagates
information from the condition check itself into the body of the branch, information from the condition check itself into the body of the branch,
allowing transformations like these for example: allowing transformations like these for example:</p>
<pre>
if (i == 7) <blockquote><pre>
... 4*i; // constant propagation if (i == 7)
... 4*i; // constant propagation
M = i+1; N = j+1; M = i+1; N = j+1;
if (i == j) if (i == j)
X = M-N; // = M-M == 0; X = M-N; // = M-M == 0;
</pre></p> </pre></blockquote>
<p>This is called Correlated Expression Elimination because we eliminate or <p>This is called Correlated Expression Elimination because we eliminate or
simplify expressions that are correlated with the direction of a branch. In simplify expressions that are correlated with the direction of a branch. In
@ -569,10 +571,10 @@ EOT
<div class="doc_text"> <div class="doc_text">
<p>This file implements constant propagation and merging. It looks for <p>This file implements constant propagation and merging. It looks for
instructions involving only constant operands and replaces them with a instructions involving only constant operands and replaces them with a
constant value instead of an instruction. For example: constant value instead of an instruction. For example:</p>
<pre>add i32 1, 2</pre><br/> <blockquote><pre>add i32 1, 2</pre></blockquote>
becomes <p>becomes</p>
<pre>i32 3</pre></p> <blockquote><pre>i32 3</pre></blockquote>
<p>NOTE: this pass has a habit of making definitions be dead. It is a good <p>NOTE: this pass has a habit of making definitions be dead. It is a good
idea to to run a <a href="#die">DIE</a> (Dead Instruction Elimination) pass idea to to run a <a href="#die">DIE</a> (Dead Instruction Elimination) pass
sometime after running this pass.</p> sometime after running this pass.</p>