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Vendor import of llvm release_31 final r156748:

Browse Source 
http://llvm.org/svn/llvm-project/llvm/tags/RELEASE_31/final@156748
This commit is contained in:
Dimitry Andric 2012-05-22 21:30:23 +00:00
parent b61ab53cb7
commit 887c359eb0
4 changed files with 109 additions and 47 deletions
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2
autoconf/configure.ac
View File

@ -31,7 +31,7 @@ dnl===
dnl===-----------------------------------------------------------------------===
dnl Initialize autoconf and define the package name, version number and
dnl address for reporting bugs.
AC_INIT([LLVM],[3.1svn],[http://llvm.org/bugs/])
AC_INIT([LLVM],[3.1],[http://llvm.org/bugs/])
AC_DEFINE([LLVM_VERSION_MAJOR], [3], [Major version of the LLVM API])
AC_DEFINE([LLVM_VERSION_MINOR], [1], [Minor version of the LLVM API])

18
configure vendored
View File

@ -1,6 +1,6 @@
#! /bin/sh
# Guess values for system-dependent variables and create Makefiles.
# Generated by GNU Autoconf 2.60 for LLVM 3.1svn.
# Generated by GNU Autoconf 2.60 for LLVM 3.1.
#
# Report bugs to <http://llvm.org/bugs/>.
#
@ -561,8 +561,8 @@ SHELL=${CONFIG_SHELL-/bin/sh}
# Identity of this package.
PACKAGE_NAME='LLVM'
PACKAGE_TARNAME='llvm'
PACKAGE_VERSION='3.1svn'
PACKAGE_STRING='LLVM 3.1svn'
PACKAGE_VERSION='3.1'
PACKAGE_STRING='LLVM 3.1'
PACKAGE_BUGREPORT='http://llvm.org/bugs/'
ac_unique_file="lib/VMCore/Module.cpp"
@ -1318,7 +1318,7 @@ if test "$ac_init_help" = "long"; then
# Omit some internal or obsolete options to make the list less imposing.
# This message is too long to be a string in the A/UX 3.1 sh.
cat <<_ACEOF
\`configure' configures LLVM 3.1svn to adapt to many kinds of systems.
\`configure' configures LLVM 3.1 to adapt to many kinds of systems.
Usage: $0 [OPTION]... [VAR=VALUE]...
@ -1384,7 +1384,7 @@ fi
if test -n "$ac_init_help"; then
case $ac_init_help in
short | recursive ) echo "Configuration of LLVM 3.1svn:";;
short | recursive ) echo "Configuration of LLVM 3.1:";;
esac
cat <<\_ACEOF
@ -1532,7 +1532,7 @@ fi
test -n "$ac_init_help" && exit $ac_status
if $ac_init_version; then
cat <<\_ACEOF
LLVM configure 3.1svn
LLVM configure 3.1
generated by GNU Autoconf 2.60
Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001,
@ -1548,7 +1548,7 @@ cat >config.log <<_ACEOF
This file contains any messages produced by compilers while
running configure, to aid debugging if configure makes a mistake.
It was created by LLVM $as_me 3.1svn, which was
It was created by LLVM $as_me 3.1, which was
generated by GNU Autoconf 2.60. Invocation command line was
$ $0 $@
@ -21785,7 +21785,7 @@ exec 6>&1
# report actual input values of CONFIG_FILES etc. instead of their
# values after options handling.
ac_log="
This file was extended by LLVM $as_me 3.1svn, which was
This file was extended by LLVM $as_me 3.1, which was
generated by GNU Autoconf 2.60. Invocation command line was
CONFIG_FILES = $CONFIG_FILES
@ -21838,7 +21838,7 @@ Report bugs to <bug-autoconf@gnu.org>."
_ACEOF
cat >>$CONFIG_STATUS <<_ACEOF
ac_cs_version="\\
LLVM config.status 3.1svn
LLVM config.status 3.1
configured by $0, generated by GNU Autoconf 2.60,
with options \\"`echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`\\"

50
docs/ReleaseNotes.html
View File

@ -3,7 +3,7 @@
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<link rel="stylesheet" href="llvm.css" type="text/css">
<link rel="stylesheet" href="_static/llvm.css" type="text/css">
<title>LLVM 3.1 Release Notes</title>
</head>
<body>
@ -96,6 +96,7 @@ Release Notes</a>.</h1>
<p>In the LLVM 3.1 time-frame, the Clang team has made many improvements:</p>
<ul>
<li>C++11 support is greatly expanded including lambdas, initializer lists, constexpr, user-defined literals, and atomics.</li>
<li>...</li>
</ul>
@ -119,17 +120,30 @@ Release Notes</a>.</h1>
<div>
<p><a href="http://dragonegg.llvm.org/">DragonEgg</a> is a
<a href="http://gcc.gnu.org/wiki/plugins">gcc plugin</a> that replaces GCC's
optimizers and code generators with LLVM's. It works with gcc-4.5 or gcc-4.6,
targets the x86-32 and x86-64 processor families, and has been successfully
used on the Darwin, FreeBSD, KFreeBSD, Linux and OpenBSD platforms. It fully
supports Ada, C, C++ and Fortran. It has partial support for Go, Java, Obj-C
and Obj-C++.</p>
optimizers and code generators with LLVM's. It works with gcc-4.5 and gcc-4.6
(and partially with gcc-4.7), can target the x86-32/x86-64 and ARM processor
families, and has been successfully used on the Darwin, FreeBSD, KFreeBSD,
Linux and OpenBSD platforms. It fully supports Ada, C, C++ and Fortran. It
has partial support for Go, Java, Obj-C and Obj-C++.</p>
<p>The 3.1 release has the following notable changes:</p>
<ul>
<li>...</li>
<li>Partial support for gcc-4.7. Ada support is poor, but other languages work
fairly well.</li>
<li>Support for ARM processors. Some essential gcc headers that are needed to
build DragonEgg for ARM are not installed by gcc. To work around this,
copy the missing headers from the gcc source tree.</li>
<li>Better optimization for Fortran by exploiting the fact that Fortran scalar
arguments have 'restrict' semantics.</li>
<li>Better optimization for all languages by passing information about type
aliasing and type ranges to the LLVM optimizers.</li>
<li>A regression test-suite was added.</li>
</ul>
@ -250,7 +264,21 @@ Release Notes</a>.</h1>
a lot of other language and tools projects. This section lists some of the
projects that have already been updated to work with LLVM 3.1.</p>
... to be filled in right before the release ...
<h3>Pure</h3>
<p>Pure (http://pure-lang.googlecode.com/) is an algebraic/functional
programming language based on term rewriting. Programs are collections of
equations which are used to evaluate expressions in a symbolic fashion. The
interpreter uses LLVM as a backend to JIT-compile Pure programs to fast native
code. Pure offers dynamic typing, eager and lazy evaluation, lexical closures, a
hygienic macro system (also based on term rewriting), built-in list and matrix
support (including list and matrix comprehensions) and an easy-to-use interface
to C and other programming languages (including the ability to load LLVM bitcode
modules, and inline C, C++, Fortran and Faust code in Pure programs if the
corresponding LLVM-enabled compilers are installed).</p>
<p>Pure version 0.54 has been tested and is known to work with LLVM 3.1 (and
continues to work with older LLVM releases >= 2.5).</p>
</div>
@ -536,6 +564,9 @@ syntax, there are still significant gaps in that support.</p>
<li>The <tt>unwind</tt> instruction is now gone. With the introduction of the
new exception handling system in LLVM 3.0, the <tt>unwind</tt> instruction
became obsolete.</li>
<li>LLVM 3.0 and earlier automatically added the returns_twice fo functions
like setjmp based on the name. This functionality was removed in 3.1.
This affects Clang users, if -ffreestanding is used.</li>
<li>....</li>
</ul>
@ -604,6 +635,7 @@ syntax, there are still significant gaps in that support.</p>
<ul>
<li>llvm-stress is a command line tool for generating random .ll files to fuzz
different LLVM components. </li>
<li>llvm-ld has been removed. Use llvm-link or Clang instead.</li>
<li>....</li>
</ul>
@ -682,7 +714,7 @@ syntax, there are still significant gaps in that support.</p>
src="http://www.w3.org/Icons/valid-html401-blue" alt="Valid HTML 4.01"></a>
<a href="http://llvm.org/">LLVM Compiler Infrastructure</a><br>
Last modified: $Date: 2012-04-17 03:13:53 +0200 (Tue, 17 Apr 2012) $
Last modified: $Date: 2012-05-13 12:04:01 +0200 (Sun, 13 May 2012) $
</address>
</body>

86
lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.cpp
View File

@ -131,30 +131,16 @@ static void CheckForPhysRegDependency(SDNode *Def, SDNode *User, unsigned Op,
}
}
static void AddGlue(SDNode *N, SDValue Glue, bool AddGlue, SelectionDAG *DAG) {
SmallVector<EVT, 4> VTs;
SDNode *GlueDestNode = Glue.getNode();
// Don't add glue from a node to itself.
if (GlueDestNode == N) return;
// Don't add glue to something that already has it, either as a use or value.
if (N->getOperand(N->getNumOperands()-1).getValueType() == MVT::Glue ||
N->getValueType(N->getNumValues() - 1) == MVT::Glue) {
return;
}
for (unsigned I = 0, E = N->getNumValues(); I != E; ++I)
VTs.push_back(N->getValueType(I));
if (AddGlue)
VTs.push_back(MVT::Glue);
// Helper for AddGlue to clone node operands.
static void CloneNodeWithValues(SDNode *N, SelectionDAG *DAG,
SmallVectorImpl<EVT> &VTs,
SDValue ExtraOper = SDValue()) {
SmallVector<SDValue, 4> Ops;
for (unsigned I = 0, E = N->getNumOperands(); I != E; ++I)
Ops.push_back(N->getOperand(I));
if (GlueDestNode)
Ops.push_back(Glue);
if (ExtraOper.getNode())
Ops.push_back(ExtraOper);
SDVTList VTList = DAG->getVTList(&VTs[0], VTs.size());
MachineSDNode::mmo_iterator Begin = 0, End = 0;
@ -173,6 +159,46 @@ static void AddGlue(SDNode *N, SDValue Glue, bool AddGlue, SelectionDAG *DAG) {
MN->setMemRefs(Begin, End);
}
static bool AddGlue(SDNode *N, SDValue Glue, bool AddGlue, SelectionDAG *DAG) {
SmallVector<EVT, 4> VTs;
SDNode *GlueDestNode = Glue.getNode();
// Don't add glue from a node to itself.
if (GlueDestNode == N) return false;
// Don't add a glue operand to something that already uses glue.
if (GlueDestNode &&
N->getOperand(N->getNumOperands()-1).getValueType() == MVT::Glue) {
return false;
}
// Don't add glue to something that already has a glue value.
if (N->getValueType(N->getNumValues() - 1) == MVT::Glue) return false;
for (unsigned I = 0, E = N->getNumValues(); I != E; ++I)
VTs.push_back(N->getValueType(I));
if (AddGlue)
VTs.push_back(MVT::Glue);
CloneNodeWithValues(N, DAG, VTs, Glue);
return true;
}
// Cleanup after unsuccessful AddGlue. Use the standard method of morphing the
// node even though simply shrinking the value list is sufficient.
static void RemoveUnusedGlue(SDNode *N, SelectionDAG *DAG) {
assert((N->getValueType(N->getNumValues() - 1) == MVT::Glue &&
!N->hasAnyUseOfValue(N->getNumValues() - 1)) &&
"expected an unused glue value");
SmallVector<EVT, 4> VTs;
for (unsigned I = 0, E = N->getNumValues()-1; I != E; ++I)
VTs.push_back(N->getValueType(I));
CloneNodeWithValues(N, DAG, VTs);
}
/// ClusterNeighboringLoads - Force nearby loads together by "gluing" them.
/// This function finds loads of the same base and different offsets. If the
/// offsets are not far apart (target specific), it add MVT::Glue inputs and
@ -240,19 +266,23 @@ void ScheduleDAGSDNodes::ClusterNeighboringLoads(SDNode *Node) {
// Cluster loads by adding MVT::Glue outputs and inputs. This also
// ensure they are scheduled in order of increasing addresses.
SDNode *Lead = Loads[0];
AddGlue(Lead, SDValue(0, 0), true, DAG);
SDValue InGlue = SDValue(Lead, Lead->getNumValues() - 1);
SDValue InGlue = SDValue(0, 0);
if (AddGlue(Lead, InGlue, true, DAG))
InGlue = SDValue(Lead, Lead->getNumValues() - 1);
for (unsigned I = 1, E = Loads.size(); I != E; ++I) {
bool OutGlue = I < E - 1;
SDNode *Load = Loads[I];
AddGlue(Load, InGlue, OutGlue, DAG);
// If AddGlue fails, we could leave an unsused glue value. This should not
// cause any
if (AddGlue(Load, InGlue, OutGlue, DAG)) {
if (OutGlue)
InGlue = SDValue(Load, Load->getNumValues() - 1);
if (OutGlue)
InGlue = SDValue(Load, Load->getNumValues() - 1);
++LoadsClustered;
++LoadsClustered;
}
else if (!OutGlue && InGlue.getNode())
RemoveUnusedGlue(InGlue.getNode(), DAG);
}
}