LowerSwitch: track bounding range for the condition tree.

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

diff --git a/docs/Passes.rst b/docs/Passes.rst
index b2703b7c03003840b84a4872d9d111f88b7b4342..9f4009297acaef7680a32e05b4ee7aed7a99f1f7 100644 (file)
--- a/docs/Passes.rst
+++ b/docs/Passes.rst
@@ -261,12 +261,6 @@ returns "I don't know" for alias queries.  NoAA is unlike other alias analysis
 implementations, in that it does not chain to a previous analysis.  As such it
 doesn't follow many of the rules that other alias analyses must.
 
-``-no-profile``: No Profile Information
----------------------------------------
-
-The default "no profile" implementation of the abstract ``ProfileInfo``
-interface.
-
 ``-postdomfrontier``: Post-Dominance Frontier Construction
 ----------------------------------------------------------
 
@@ -336,23 +330,6 @@ This pass is used to seek out all of the types in use by the program.  Note
 that this analysis explicitly does not include types only used by the symbol
 table.
 
-``-profile-estimator``: Estimate profiling information
-------------------------------------------------------
-
-Profiling information that estimates the profiling information in a very crude
-and unimaginative way.
-
-``-profile-loader``: Load profile information from ``llvmprof.out``
--------------------------------------------------------------------
-
-A concrete implementation of profiling information that loads the information
-from a profile dump file.
-
-``-profile-verifier``: Verify profiling information
----------------------------------------------------
-
-Pass that checks profiling information for plausibility.
-
 ``-regions``: Detect single entry single exit regions
 -----------------------------------------------------
 
@@ -540,6 +517,8 @@ instructions that are obviously dead.
 A trivial dead store elimination that only considers basic-block local
 redundant stores.
 
+.. _passes-functionattrs:
+
 ``-functionattrs``: Deduce function attributes
 ----------------------------------------------
 
@@ -624,31 +603,13 @@ where it is profitable, the loop could be transformed to count down to zero
 
 Bottom-up inlining of functions into callees.
 
-``-insert-edge-profiling``: Insert instrumentation for edge profiling
----------------------------------------------------------------------
-
-This pass instruments the specified program with counters for edge profiling.
-Edge profiling can give a reasonable approximation of the hot paths through a
-program, and is used for a wide variety of program transformations.
-
-Note that this implementation is very naïve.  It inserts a counter for *every*
-edge in the program, instead of using control flow information to prune the
-number of counters inserted.
-
-``-insert-optimal-edge-profiling``: Insert optimal instrumentation for edge profiling
--------------------------------------------------------------------------------------
-
-This pass instruments the specified program with counters for edge profiling.
-Edge profiling can give a reasonable approximation of the hot paths through a
-program, and is used for a wide variety of program transformations.
-
 .. _passes-instcombine:
 
 ``-instcombine``: Combine redundant instructions
 ------------------------------------------------
 
 Combine instructions to form fewer, simple instructions.  This pass does not
-modify the CFG This pass is where algebraic simplification happens.
+modify the CFG. This pass is where algebraic simplification happens.
 
 This pass combines things like:
 
@@ -681,6 +642,13 @@ program:
    shifts.
 #. … etc.
 
+This pass can also simplify calls to specific well-known function calls (e.g.
+runtime library functions).  For example, a call ``exit(3)`` that occurs within
+the ``main()`` function can be transformed into simply ``return 3``. Whether or
+not library calls are simplified is controlled by the
+:ref:`-functionattrs <passes-functionattrs>` pass and LLVM's knowledge of
+library calls on different targets.
+
 ``-internalize``: Internalize Global Symbols
 --------------------------------------------
 
@@ -1011,14 +979,6 @@ as:
 Note that this pass has a habit of making definitions be dead.  It is a good
 idea to run a :ref:`DCE <passes-dce>` pass sometime after running this pass.
 
-``-simplify-libcalls``: Simplify well-known library calls
----------------------------------------------------------
-
-Applies a variety of small optimizations for calls to specific well-known
-function calls (e.g. runtime library functions).  For example, a call
-``exit(3)`` that occurs within the ``main()`` function can be transformed into
-simply ``return 3``.
-
 .. _passes-simplifycfg:
 
 ``-simplifycfg``: Simplify the CFG