[Docs] fix typo, adjust text order
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350846 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/docs/Vectorizers.rst b/docs/Vectorizers.rst
index 4a01580..8ac7ae0 100644
--- a/docs/Vectorizers.rst
+++ b/docs/Vectorizers.rst
@@ -311,7 +311,7 @@
Vectorization of function calls
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-The Loop Vectorize can vectorize intrinsic math functions.
+The Loop Vectorizer can vectorize intrinsic math functions.
See the table below for a list of these functions.
+-----+-----+---------+
@@ -328,6 +328,11 @@
| | | fmuladd |
+-----+-----+---------+
+Note that the optimizer may not be able to vectorize math library functions
+that correspond to these intrinsics if the library calls access external state
+such as "errno". To allow better optimization of C/C++ math library functions,
+use "-fno-math-errno".
+
The loop vectorizer knows about special instructions on the target and will
vectorize a loop containing a function call that maps to the instructions. For
example, the loop below will be vectorized on Intel x86 if the SSE4.1 roundps
@@ -340,10 +345,6 @@
f[i] = floorf(f[i]);
}
-Note that the optimizer may not be able to vectorize math library functions
-that access external state such as "errno". To allow better optimization of
-C/C++ math library functions, use "-fno-math-errno".
-
Partial unrolling during vectorization
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
