6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2026-04-21 23:17:16 +00:00
Code Issues Projects Releases Wiki Activity

implement a new magic global "llvm.compiler.used" which is like llvm.used, but

Browse Source 
doesn't cause ".no_dead_strip" to be emitted on darwin.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76399 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2009-07-20 06:14:25 +00:00
parent ba8dc03935
commit 401e10c4fb
8 changed files with 63 additions and 32 deletions
Download Patch File Download Diff File Expand all files Collapse all files
docs/LangRef.html
+23 -2
View File
@@ -94,6 +94,8 @@
<li><a href="#intrinsic_globals">Intrinsic Global Variables</a>
<ol>
<li><a href="#intg_used">The '<tt>llvm.used</tt>' Global Variable</a></li>
<li><a href="#intg_compiler_used">The '<tt>llvm.compiler.used</tt>'
Global Variable</a></li>
<li><a href="#intg_global_ctors">The '<tt>llvm.global_ctors</tt>'
Global Variable</a></li>
<li><a href="#intg_global_dtors">The '<tt>llvm.global_dtors</tt>'
@@ -2168,8 +2170,9 @@ call void asm sideeffect "eieio", ""()
<p>LLVM has a number of "magic" global variables that contain data that affect
code generation or other IR semantics. These are documented here. All globals
of this sort should have a section specified as "llvm.metadata". This section
and all globals that start with "llvm." are reserved for LLVM.</p>
of this sort should have a section specified as "<tt>llvm.metadata</tt>". This
section and all globals that start with "<tt>llvm.</tt>" are reserved for use
by LLVM.</p>
<!-- ======================================================================= -->
<div class="doc_subsection">
@@ -2206,6 +2209,24 @@ object file to prevent the assembler and linker from molesting the symbol.</p>
</div>
<!-- ======================================================================= -->
<div class="doc_subsection">
<a name="intg_compiler_used">The '<tt>llvm.compiler.used</tt>' Global Variable</a>
</div>
<div class="doc_text">
<p>The <tt>@llvm.compiler.used</tt> directive is the same as the
<tt>@llvm.used</tt> directive, except that it only prevents the compiler from
touching the symbol. On targets that support it, this allows an intelligent
linker to optimize references to the symbol without being impeded as it would be
by <tt>@llvm.used</tt>.</p>
<p>This is a rare construct that should only be used in rare circumstances, and
should not be exposed to source languages.</p>
</div>
<!-- ======================================================================= -->
<div class="doc_subsection">
<a name="intg_global_ctors">The '<tt>llvm.global_ctors</tt>' Global Variable</a>