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| author | Jakub Staszak <jstaszak@apple.com> | 2011-12-04 18:29:26 +0000 |
|---|---|---|
| committer | Jakub Staszak <jstaszak@apple.com> | 2011-12-04 18:29:26 +0000 |
| commit | b170e2de8339e239084420293f7657b85c74af74 (patch) | |
| tree | a4276015551af7dacc4344bb98c766a6658ef415 /docs/LangRef.html | |
| parent | 309bedd7bc37554cdb41c76737284150dc842a4a (diff) | |
| download | external_llvm-b170e2de8339e239084420293f7657b85c74af74.zip external_llvm-b170e2de8339e239084420293f7657b85c74af74.tar.gz external_llvm-b170e2de8339e239084420293f7657b85c74af74.tar.bz2 | |
Add 'llvm.expect' intrinsic description.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145792 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'docs/LangRef.html')
| -rw-r--r-- | docs/LangRef.html | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/docs/LangRef.html b/docs/LangRef.html index ed4e4d5..d9e02bd 100644 --- a/docs/LangRef.html +++ b/docs/LangRef.html @@ -306,6 +306,8 @@ '<tt>llvm.stackprotector</tt>' Intrinsic</a></li> <li><a href="#int_objectsize"> '<tt>llvm.objectsize</tt>' Intrinsic</a></li> + <li><a href="#int_expect"> + '<tt>llvm.expect</tt>' Intrinsic</a></li> </ol> </li> </ol> @@ -8205,11 +8207,35 @@ LLVM</a>.</p> compile time.</p> </div> +<!-- _______________________________________________________________________ --> +<h4> + <a name="int_expect">'<tt>llvm.expect</tt>' Intrinsic</a> +</h4> + +<div> +<h5>Syntax:</h5> +<pre> + declare i32 @llvm.expect.i32(i32 <val>, i32 <expected_val>) + declare i64 @llvm.expect.i64(i64 <val>, i64 <expected_val>) +</pre> + +<h5>Overview:</h5> +<p>The <tt>llvm.expect</tt> intrinsic provides information about expected (the + most probable) value of <tt>val</tt>, which can be used by optimizers.</p> + +<h5>Arguments:</h5> +<p>The <tt>llvm.expect</tt> intrinsic takes two arguments. The first + argument is a value. The second argument is an expected value, this needs to + be a constant value, variables are not allowed.</p> + +<h5>Semantics:</h5> +<p>This intrinsic is lowered to the <tt>val</tt>.</p> </div> </div> +</div> <!-- *********************************************************************** --> <hr> <address> |