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authorCharles Davis <cdavis@mines.edu>2010-10-25 15:37:09 +0000
committerCharles Davis <cdavis@mines.edu>2010-10-25 15:37:09 +0000
commit970bfcc7d8b9991430caa7ab33975617f3f4c40d (patch)
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Add a new 'hotpatch' attribute. This attribute will insert a two-byte no-op
instruction at the beginning of each function that has the attribute, allowing the function to be easily hooked and/or patched. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117264 91177308-0d34-0410-b5e6-96231b3b80d8
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@@ -1131,6 +1131,11 @@ define void @f() optsize { ... }
function into callers whenever possible, ignoring any active inlining size
threshold for this caller.</dd>
+ <dt><tt><b>hotpatch</b></tt></dt>
+ <dd>This attribute indicates that the prologue should contain a 'hotpatch'
+ sequence at the beginning. This is the same sequence used in the
+ system DLLs in Microsoft Windows XP Service Pack 2 and higher.</dd>
+
<dt><tt><b>inlinehint</b></tt></dt>
<dd>This attribute indicates that the source code contained a hint that inlining
this function is desirable (such as the "inline" keyword in C/C++). It