[WinEH] Move WinEHFuncInfo from MachineModuleInfo to MachineFunction

[oota-llvm.git] / docs / LangRef.rst

diff --git a/docs/LangRef.rst b/docs/LangRef.rst
index 0e4eae0df804cae975170c38ebcd5955b4a1bbca..b1a92dc0ebde442a14d3104467faaecace415e35 100644 (file)
--- a/docs/LangRef.rst
+++ b/docs/LangRef.rst
@@ -10417,6 +10417,34 @@ Bit Manipulation Intrinsics
 LLVM provides intrinsics for a few important bit manipulation
 operations. These allow efficient code generation for some algorithms.
 
+'``llvm.bitreverse.*``' Intrinsics
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Syntax:
+"""""""
+
+This is an overloaded intrinsic function. You can use bitreverse on any
+integer type.
+
+::
+
+      declare i16 @llvm.bitreverse.i16(i16 <id>)
+      declare i32 @llvm.bitreverse.i32(i32 <id>)
+      declare i64 @llvm.bitreverse.i64(i64 <id>)
+
+Overview:
+"""""""""
+
+The '``llvm.bitreverse``' family of intrinsics is used to reverse the
+bitpattern of an integer value; for example ``0b1234567`` becomes
+``0b7654321``.
+
+Semantics:
+""""""""""
+
+The ``llvm.bitreverse.iN`` intrinsic returns an i16 value that has bit
+``M`` in the input moved to bit ``N-M`` in the output.
+
 '``llvm.bswap.*``' Intrinsics
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^