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Various cleanups. Especially, EH is turned on by default!

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42356 91177308-0d34-0410-b5e6-96231b3b80d8
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Duncan Sands 2007-09-26 15:59:54 +00:00
parent 9412489650
commit c90d68bf3d
1 changed files with 17 additions and 14 deletions
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docs/ReleaseNotes.html
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@ -70,11 +70,11 @@ It includes many features and refinements from LLVM 2.0.</p>
<div class="doc_text">
<p>LLVM 2.1 brings two new beta C front-ends. First, Duncan, Anton and Devang
has started syncing up llvm-gcc with GCC 4.2, yielding "llvm-gcc 4.2" (creative,
huh?). llvm-gcc 4.2 has the promise to bring much better FORTRAN and Ada
support to LLVM as well as features like atomic builtins, OpenMP, and many other
things. Check it out!</p>
<p>LLVM 2.1 brings two new beta C front-ends. First, a new version of llvm-gcc
based on GCC 4.2, innovatively called "llvm-gcc-4.2". This promises to bring
FORTRAN and Ada support to LLVM as well as features like atomic builtins and
OpenMP. None of these actually work yet, but don't let that stop you checking
it out!</p>
<p>Second, LLVM now includes its own native C and Objective-C front-end (C++ is
in progress, but is not very far along) code named "<a
@ -211,7 +211,7 @@ optimizer, speeding it up and making it more aggressive. For example:</p>
<ul>
<li>Duncan and Anton made significant progress chasing down a number of problems
with C++ Zero-Cost exception handling in llvm-gcc 4.0 and 4.2. It is now at
the point where it "just works" on linux/x86-32 and has partial support on
the point where it "just works" on linux/X86-32 and has partial support on
other targets.</li>
<li>Devang and Duncan fixed a huge number of bugs relating to bitfields, pragma
@ -226,7 +226,7 @@ optimizer, speeding it up and making it more aggressive. For example:</p>
"restrict" pointer arguments to functions.</li>
<li>Duncan contributed support for trampolines (taking the address of a nested
functions), currently this is only supported in the x86 target.</li>
function). Currently this is only supported on the X86 target.</li>
<li>Lauro Ramos Venancio contributed support to encode alignment info in
load and store instructions, the foundation for other alignment-related
@ -350,7 +350,6 @@ components, please contact us on the <a href="http://lists.cs.uiuc.edu/mailman/l
<ul>
<li>The <tt>-cee</tt> pass is known to be buggy, and may be removed in a
future release.</li>
<li>C++ EH support is disabled for this release.</li>
<li>The MSIL backend is experimental.</li>
<li>The IA64 code generator is experimental.</li>
<li>The Alpha backend is experimental.</li>
@ -402,7 +401,7 @@ compilation, and lacks support for debug information.</li>
<ul>
<li>Thumb mode works only on ARMv6 or higher processors. On sub-ARMv6
processors, thumb program can crash or produces wrong
processors, thumb programs can crash or produce wrong
results (<a href="http://llvm.org/PR1388">PR1388</a>).</li>
<li>Compilation for ARM Linux OABI (old ABI) is supported, but not fully tested.
</li>
@ -526,9 +525,12 @@ bits.</p></li>
<li><p>llvm-gcc <b>partially</b> supports these GCC extensions:</p>
<ol>
<li><a href="http://gcc.gnu.org/onlinedocs/gcc/Nested-Functions.html#Nested%20Functions">Nested Functions</a>: As in Algol and Pascal, lexical scoping of functions.<br>
Nested functions are supported, but llvm-gcc does not support non-local
gotos or taking the address of a nested function.</li>
<li><a href="http://gcc.gnu.org/onlinedocs/gcc/Nested-Functions.html#Nested%20Functions">Nested Functions</a>:
As in Algol and Pascal, lexical scoping of functions.
Nested functions are supported, but llvm-gcc does not support
taking the address of a nested function (except on the X86 target)
or non-local gotos.</li>
<li><a href="http://gcc.gnu.org/onlinedocs/gcc/Function-Attributes.html#Function%20Attributes">Function Attributes</a>:
@ -620,8 +622,9 @@ tested and works for a number of non-trivial programs, including LLVM
itself, Qt, Mozilla, etc.</p>
<ul>
<li>llvm-gcc4 only has partial support for <a href="http://llvm.org/PR870">C++
Exception Handling</a>, and it is not enabled by default.</li>
<li>Exception handling only works well on the linux/x86-32 target.
In some cases, illegally throwing an exception does not result
in a call to terminate.</li>
<!-- NO EH Support!