[llvm-commits] [llvm] r115152 - /llvm/trunk/docs/ReleaseNotes.html
Chris Lattner
sabre at nondot.org
Thu Sep 30 09:31:33 PDT 2010
Author: lattner
Date: Thu Sep 30 11:31:33 2010
New Revision: 115152
URL: http://llvm.org/viewvc/llvm-project?rev=115152&view=rev
Log:
checkpoint notes
Modified:
llvm/trunk/docs/ReleaseNotes.html
Modified: llvm/trunk/docs/ReleaseNotes.html
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/docs/ReleaseNotes.html?rev=115152&r1=115151&r2=115152&view=diff
==============================================================================
--- llvm/trunk/docs/ReleaseNotes.html (original)
+++ llvm/trunk/docs/ReleaseNotes.html Thu Sep 30 11:31:33 2010
@@ -103,7 +103,28 @@
changing between equvivalent opcodes where possible.
Support for the Intel AES instructions in the assembler.
memcpy, memmove, and memset now take address space qualified pointers + volatile.
-
+ per-instruction debug info metadata is much faster and uses less space (new DebugLoc class).
+ -ffunction-sections and -fdata-sections are supported on ELF targets.
+ Now iterate function passes when a cgsccpassmanager detects a devirtualization
+ -momit-leaf-frame-pointer now supported.
+ New -regalloc=fast, =local got removed
+ New -regalloc=default option that chooses a register allocator based on the -O optimization level.
+ New "trap values" concept: http://llvm.org/docs/LangRef.html#trapvalues
+ Improved trip count analysis for <= and >= loops, and uses sign overflow info.
+ REMOVED: SCCVN pass.
+ X86 backend attempts to promote 16-bit integer operations to 32-bits to avoid
+ 0x66 prefixes, which are slow on some microarchitectures and bloat the code
+ on others.
+ X87 fp stackifier is global!
+ LTO debug info support?
+ NEON: Better performance for QQQQ (4-consecutive Q register) instructions. New reg sequence abstraction?
+ New support for X86 "thiscall" calling convention (x86_thiscallcc in IR).
+ ARM: Better scheduling (list-hybrid, hybrid?)
+ New SubRegIndex tblgen class for targets -> jakob
+ ARM: Tail call support.
+ AVX support in the MC assembler. Full compiler support not done yet.
+ Atomics now get legalized when not natively supported (jim g)
+ ARM: General performance work and tuning.
-->
@@ -145,6 +166,7 @@
<ul>
<li>Surely these guys have done something</li>
+<li>X86-64 abi improvements? Did they make it in?</li>
</ul>
</div>
@@ -247,29 +269,6 @@
<!--=========================================================================-->
<div class="doc_subsection">
-<a name="mc">llvm-mc: Machine Code Toolkit</a>
-</div>
-
-<div class="doc_text">
-<p>
-The LLVM Machine Code (aka MC) sub-project of LLVM was created to solve a number
-of problems in the realm of assembly, disassembly, object file format handling,
-and a number of other related areas that CPU instruction-set level tools work
-in. It is a sub-project of LLVM which provides it with a number of advantages
-over other compilers that do not have tightly integrated assembly-level tools.
-For a gentle introduction, please see the <a
-href="http://blog.llvm.org/2010/04/intro-to-llvm-mc-project.html">Intro to the
-LLVM MC Project Blog Post</a>.
-</p>
-
-<p>2.8 status here. Basic correctness, some obscure missing instructions on
- mainline, on by default in clang.
- Entire compiler backend converted to use mcstreamer.
- </p>
-</div>
-
-<!--=========================================================================-->
-<div class="doc_subsection">
<a name="lldb">LLDB: Low Level Debugger</a>
</div>
@@ -587,6 +586,33 @@
<!--=========================================================================-->
<div class="doc_subsection">
+<a name="mc">MC Level Improvements</a>
+</div>
+
+<div class="doc_text">
+<p>
+FIXME: Rewrite.
+
+The LLVM Machine Code (aka MC) sub-project of LLVM was created to solve a number
+of problems in the realm of assembly, disassembly, object file format handling,
+and a number of other related areas that CPU instruction-set level tools work
+in. It is a sub-project of LLVM which provides it with a number of advantages
+over other compilers that do not have tightly integrated assembly-level tools.
+For a gentle introduction, please see the <a
+href="http://blog.llvm.org/2010/04/intro-to-llvm-mc-project.html">Intro to the
+LLVM MC Project Blog Post</a>.
+</p>
+
+<p>2.8 status here. Basic correctness, some obscure missing instructions on
+ mainline, on by default in clang.
+ Entire compiler backend converted to use mcstreamer.
+ </p>
+</div>
+
+
+
+<!--=========================================================================-->
+<div class="doc_subsection">
<a name="codegen">Target Independent Code Generator Improvements</a>
</div>
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