Changes in directory llvm/docs:
ReleaseNotes.html updated: 1.349 -> 1.350
---
Log message:
add some more notes
---
Diffs of the changes: (+40 -4)
ReleaseNotes.html | 44 ++++++++++++++++++++++++++++++++++++++++----
1 files changed, 40 insertions(+), 4 deletions(-)
Index: llvm/docs/ReleaseNotes.html
diff -u llvm/docs/ReleaseNotes.html:1.349 llvm/docs/ReleaseNotes.html:1.350
--- llvm/docs/ReleaseNotes.html:1.349 Tue Apr 18 01:32:08 2006
+++ llvm/docs/ReleaseNotes.html Tue Apr 18 23:02:47 2006
@@ -87,7 +87,8 @@
including GCC inline assembly, generic vector support, SSE and Altivec
intrinsics, and several new GCC attributes. In addition, llvm-gcc4 is
significantly faster than llvm-gcc3, respects -O options, its -c/-S options
-correspond to GCC's (they emit native code).</p>
+correspond to GCC's (they emit native code), and it has debugging support well
+underway.</p>
<p>If you can use it, llvm-gcc4 is offers significant new functionality, and we
hope that it will replace llvm-gcc3 completely in a future release.
@@ -172,7 +173,7 @@
</div>
<!--_________________________________________________________________________-->
-<div class="doc_subsubsection"><a name="othernew">Optimizer
+<div class="doc_subsubsection"><a name="optimizernew">Optimizer
Improvements</a></div>
<div class="doc_text">
@@ -187,23 +188,56 @@
bits are demanded or not.</li>
<li>The Scalar Replacement of Aggregates pass (<tt>-scalarrepl</tt>) can now
promote simple unions to registers.</li>
+<li>The Reassociation pass (<tt>-reassociate</tt>) can now
+ factor expressions, e.g. turning "A*A+A*B" into "A*(A+B)".</li>
<li>Several LLVM passes are <a href="http://llvm.org/PR681";>significantly
faster</a>.</li>
</ul>
</div>
+<!--_________________________________________________________________________-->
+<div class="doc_subsubsection"><a name="codgennew">Code Generator
+Improvements</a></div>
+
+<div class="doc_text">
+<ul>
+<li>LLVM has a new prepass (before register allocation) list scheduler, which
+ supports bottom-up and top-down scheduling, pluggable priority functions
and
+ pluggable hazard recognizers. The X86 backend uses this to reduce register
+ pressure and RISC targets schedule based on operation latency.</li>
+<li>The tblgen-based target description framework introduced in LLVM 1.6 has
+ several new features, useful for targets that can fold loads and stores
into
+ operations, and features that make the .td files more expressive.</li>
+<li>The instruction selector is significantly faster in 1.7 than in 1.6.</li>
+<li>The X86, Alpha and Itanium backends use new DAG-DAG instruction selectors,
+ making them easier to maintain and generate slightly better code.</li>
+<li>The X86 backend now supports generation of Scalar SSE code for scalar FP
+ expressions. LLVM provides significantly better performance with Scalar
SSE
+ instructions than it does with the Intel floating point stack
+ instructions.</li>
+<li>The Itanium backend now has a bundling pass, which improves performance
+ by ~10% and reduces code size (previously it unconditionally inserted a
stop
+ bit after every instruction).</li>
+</ul>
+</div>
<!--_________________________________________________________________________-->
<div class="doc_subsubsection"><a name="othernew">Other New Features</a></div>
<div class="doc_text">
<ul>
+<li>The Mac OS/X PowerPC and X86 backends now have initial support Darwin DWARF
+ debugging information, however, debug info generation has been disabled for
+ the 1.7 release in llvmgcc4.</li>
+<li>LLVM includes the new <a href="docs/CommandGuide/html/llvm-config.html">
+ llvm-config</a> utility, which makes it easier to build and link programs
+ against the LLVM libraries when not using the LLVM makefiles.</li>
<li>LLVM now supports first class global ctor/dtor initialization lists, no
longer forcing targets to use "__main".</li>
<li>LLVM supports assigning globals and functions to a particular section
in the result executable using the GCC section attribute.</li>
<li><a href="ExtendingLLVM.html">Adding intrinsics to LLVM</a> is now
-significantly easier.</li>
+ significantly easier.</li>
<li>llvmgcc4 now fully supports C99 Variable Length Arrays, including dynamic
stack deallocation.</li>
@@ -218,6 +252,8 @@
<div class="doc_text">
<ul>
+<li>The official LLVM URL is now <a href="http://llvm.org/";>
+ http://llvm.org/</a>.</li>
<li>The LLVM intrinsics used to be overloaded based on type: for example,
<a href="LangRef.html#int_ctpop"><tt>llvm.ctpop</tt></a> could work with
any
integer datatype. They are now separated into different intrinsics with
@@ -730,7 +766,7 @@
src="http://www.w3.org/Icons/valid-html401"; alt="Valid HTML 4.01!" /></a>
<a href="http://llvm.org/";>The LLVM Compiler Infrastructure</a><br>
- Last modified: $Date: 2006/04/18 06:32:08 $
+ Last modified: $Date: 2006/04/19 04:02:47 $
</address>
</body>
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