mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-21 03:29:40 +00:00
more englishification
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65799 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
parent
917cc71ae1
commit
511433e7cf
@ -419,7 +419,7 @@ several ways, including adding shadow induction variables to avoid
|
||||
|
||||
<!--=========================================================================-->
|
||||
<div class="doc_subsection">
|
||||
<a name="codegen">Code Generator Improvements</a>
|
||||
<a name="codegen">Target Independent Code Generator Improvements</a>
|
||||
</div>
|
||||
|
||||
<div class="doc_text">
|
||||
@ -429,27 +429,34 @@ infrastructure, which allows us to implement more aggressive algorithms and make
|
||||
it run faster:</p>
|
||||
|
||||
<ul>
|
||||
<li>The type legalization logic has been completely rewritten, and is now
|
||||
more powerful (it supports arbitrary precision integer types for example)
|
||||
and hopefully more correct.
|
||||
The type legalizer converts operations on types that are not natively
|
||||
supported by the target machine into equivalent code sequences that only use
|
||||
natively supported types.
|
||||
The old type legalizer is still available and will be used if
|
||||
<tt>-disable-legalize-types</tt> is passed to <tt>llc</tt>.
|
||||
<li>The <a href="WritingAnLLVMBackend.html">Writing an LLVM Compiler
|
||||
Backend</a> document has been greatly expanded and is substantially more
|
||||
complete.</li>
|
||||
|
||||
<li>The SelectionDAG type legalization logic has been completely rewritten, is
|
||||
now more powerful (it supports arbitrary precision integer types for example),
|
||||
and more correct in several corner cases. The type legalizer converts
|
||||
operations on types that are not natively supported by the target machine into
|
||||
equivalent code sequences that only use natively supported types. The old type
|
||||
legalizer is still available (for now) and will be used if
|
||||
<tt>-disable-legalize-types</tt> is passed to the code generator.
|
||||
</li>
|
||||
<li>?</li>
|
||||
|
||||
<li>The code generator now supports widening illegal vectors to larger legal
|
||||
ones (for example, converting operations on <3 x float> to work on
|
||||
<4 x float>) which is very important for common graphics
|
||||
applications.</li>
|
||||
|
||||
how to write a backend doc docs/WritingAnLLVMBackend.html
|
||||
asmprinters seperate from targets for jits
|
||||
fastisel + exception handling
|
||||
vector widening <3 x float> -> <4 x float>
|
||||
PBQP register allocator now supports register coalescing.
|
||||
|
||||
<li>The assembly printers for each target are now split out into their own
|
||||
libraries that are separate from the main code generation logic. This reduces
|
||||
code size of JIT compilers by not requiring them to be linked in.</li>
|
||||
|
||||
<li>The 'fast' instruction selection path (used at -O0 and for fast JIT
|
||||
compilers) now supports accelerating codegen for code that uses exception
|
||||
handling constructs.</li>
|
||||
|
||||
<li>The optional PBQP register allocator now supports register coalescing.</li>
|
||||
</ul>
|
||||
|
||||
</div>
|
||||
|
||||
<!--=========================================================================-->
|
||||
@ -462,14 +469,34 @@ PBQP register allocator now supports register coalescing.
|
||||
</p>
|
||||
|
||||
<ul>
|
||||
non-zero __builtin_return_address values on X86.
|
||||
vector shift support + X86 backend.
|
||||
x86 JIT now detects core i7 and atom, autoconfiguring itself appropriately.
|
||||
x86-64 now uses red zone (unless -mno-red-zone option is specified).
|
||||
x86 backend GS segment -> addr space 256 (r62980)
|
||||
X86 backend now supports -disable-mmx.
|
||||
JIT supports exceptions on linux/x86-64 and linux/x86-64.
|
||||
JIT TLS support on x86-32 but not x86-64.
|
||||
<li>The "<a href="LangRef.html#int_returnaddress">llvm.returnaddress</a>"
|
||||
intrinsic (which is used to implement "__builtin_return_address") now supports
|
||||
non-zero stack depths on X86.</li>
|
||||
|
||||
<li>The X86 backend now supports code generation of vector shift operations
|
||||
using SSE instructions.</li>
|
||||
|
||||
<li>X86-64 code generation now takes advantage of red zone (unless
|
||||
-mno-red-zone option is specified).</li>
|
||||
|
||||
<li>The X86 backend now supports using address space #256 in LLVM IR as a way of
|
||||
performing memory references off the GS segment register. This allows a
|
||||
front-end to take advantage of very low-level programming techniques when
|
||||
targetting X86 CPUs. See test/CodeGen/X86/movgs.ll for a simple example.</li>
|
||||
|
||||
<li>The X86 backend now supports a <tt>-disable-mmx</tt> command line option to
|
||||
prevent use of MMX even on chips that support it. This is important for cases
|
||||
where code does not contain the proper "llvm.x86.mmx.emms" intrinsics.</li>
|
||||
|
||||
<li>The X86 JIT now detects the new Intel "<a
|
||||
href="http://en.wikipedia.org/wiki/Intel_Core_i7">Core i7</a>" and <a
|
||||
href="http://en.wikipedia.org/wiki/Intel_Atom">Atom</a>" chips,
|
||||
auto-configuring itself appropriately for the features of these chips.</li>
|
||||
|
||||
<li>The JIT now supports exception handling constructs on Linux/X86-64 and
|
||||
Darwin/x86-64.</li>
|
||||
<li>The JIT supports Thread Local Storage (TLS) on Linux/X86-32 but not yet on
|
||||
X86-64.</li>
|
||||
</ul>
|
||||
|
||||
|
||||
@ -502,7 +529,7 @@ types.</li>
|
||||
<li>Passing/returning aggregate types to/from functions.</li>
|
||||
<li>Variable arguments.</li>
|
||||
<li>Indirect function calls.</li>
|
||||
<li>Interrupts/prgrams.</li>
|
||||
<li>Interrupts/programs.</li>
|
||||
<li>Debug info.</li>
|
||||
</li>
|
||||
</ul>
|
||||
@ -510,21 +537,6 @@ types.</li>
|
||||
</div>
|
||||
|
||||
|
||||
<!--=========================================================================-->
|
||||
<div class="doc_subsection">
|
||||
<a name="othertargetspecific">Other Target Specific Improvements</a>
|
||||
</div>
|
||||
|
||||
<div class="doc_text">
|
||||
<p>New target-specific features include:
|
||||
</p>
|
||||
|
||||
<ul>
|
||||
<li>?</li>
|
||||
</ul>
|
||||
|
||||
</div>
|
||||
|
||||
<!--=========================================================================-->
|
||||
<div class="doc_subsection">
|
||||
<a name="llvmc">Improvements in LLVMC</a>
|
||||
@ -600,7 +612,7 @@ from the previous release.</p>
|
||||
|
||||
<ul>
|
||||
|
||||
<li>llvm-gcc defaults to -fno-math-errno on all x86 targets.</li>
|
||||
<li>llvm-gcc defaults to -fno-math-errno on all X86 targets.</li>
|
||||
</ul>
|
||||
|
||||
|
||||
|
Loading…
Reference in New Issue
Block a user