From 07de8d1acf10117cac2cc53f1cb0ae888be6a5bc Mon Sep 17 00:00:00 2001
From: Dale Johannesen <dalej@apple.com>
Date: Thu, 24 Sep 2009 18:38:21 +0000
Subject: Clarify that llvm attaches C language semantics to functions with
 names that match the C library.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82701 91177308-0d34-0410-b5e6-96231b3b80d8
---
 docs/LangRef.html | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/docs/LangRef.html b/docs/LangRef.html
index bdc9e17..1331b02 100644
--- a/docs/LangRef.html
+++ b/docs/LangRef.html
@@ -5045,6 +5045,13 @@ Loop:       ; Infinite loop that counts from 0 on up...
   %ZZ = call zeroext i32 @bar()                     <i>; Return value is %zero extended</i>
 </pre>
 
+<p>llvm treats calls to some functions with names and arguments that match the
+standard C library as being the C library functions, and may perform
+optimizations or generate code for them under that assumption.  These
+functions currently include:
+acos, asin, atan, atan2, ceil, cos, cosf, cosh, exp, fabs, floor, fmod, log,
+log10, malloc, pow, sin, sinh, sqrt, sqrtf, sin, sinf, tan, tanh.</p>
+
 </div>
 
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