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| author | Devang Patel <dpatel@apple.com> | 2008-03-19 21:56:59 +0000 |
|---|---|---|
| committer | Devang Patel <dpatel@apple.com> | 2008-03-19 21:56:59 +0000 |
| commit | c758209153ca0f6da6737f25ada269c573fba456 (patch) | |
| tree | 88b334fb5710b2d63089bdb840135dc1e8f7ebfa /docs/WritingAnLLVMPass.html | |
| parent | 7925ed05d0245aca0b0b2ea8d8a0b35b77c5ebd4 (diff) | |
| download | external_llvm-c758209153ca0f6da6737f25ada269c573fba456.zip external_llvm-c758209153ca0f6da6737f25ada269c573fba456.tar.gz external_llvm-c758209153ca0f6da6737f25ada269c573fba456.tar.bz2 | |
PassInfo keep tracks whether a pass is an analysis pass or not.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48554 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'docs/WritingAnLLVMPass.html')
| -rw-r--r-- | docs/WritingAnLLVMPass.html | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/docs/WritingAnLLVMPass.html b/docs/WritingAnLLVMPass.html index 4ae039d..07e736d 100644 --- a/docs/WritingAnLLVMPass.html +++ b/docs/WritingAnLLVMPass.html @@ -292,13 +292,19 @@ function.</p> initialization value is not important.</p> <div class="doc_code"><pre> - RegisterPass<Hello> X("<i>hello</i>", "<i>Hello World Pass</i>"); + RegisterPass<Hello> X("<i>hello</i>", "<i>Hello World Pass</i>", + false /* Only looks at CFG */, + false /* Analysis Pass */); } <i>// end of anonymous namespace</i> </pre></div> <p>Lastly, we <a href="#registration">register our class</a> <tt>Hello</tt>, giving it a command line -argument "<tt>hello</tt>", and a name "<tt>Hello World Pass</tt>".</p> +argument "<tt>hello</tt>", and a name "<tt>Hello World Pass</tt>". +Last two RegisterPass arguments are optional. Their default value is false. +If a pass walks CFG without modifying it then third argument is set to true. +If a pass is an analysis pass, for example dominator tree pass, then true +is supplied as fourth argument. </p> <p>As a whole, the <tt>.cpp</tt> file looks like:</p> |