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Clarify the unwind attribute. Add assumption

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about sret made by the optimizers.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48452 91177308-0d34-0410-b5e6-96231b3b80d8
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Duncan Sands 2008-03-17 12:17:41 +00:00
parent c386263628
commit b7f0c082cb
1 changed files with 6 additions and 4 deletions
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@ -829,6 +829,7 @@ declare i32 @atoi(i8*) nounwind readonly
<dt><tt>sret</tt></dt>
<dd>This indicates that the pointer parameter specifies the address of a
structure that is the return value of the function in the source program.
Loads and stores to the structure are assumed not to trap.
May only be applied to the first parameter.</dd>
<dt><tt>noalias</tt></dt>
@ -842,10 +843,11 @@ declare i32 @atoi(i8*) nounwind readonly
an <tt>unreachable</tt> instruction immediately followed the call.</dd>
<dt><tt>nounwind</tt></dt>
<dd>This function attribute indicates that the function type does not use
the unwind instruction and does not allow stack unwinding to propagate
through it.</dd>
<dd>This function attribute indicates that no exceptions unwind out of the
function. Usually this is because the function makes no use of exceptions,
but it may also be that the function catches any exceptions thrown when
executing it.</dd>
<dt><tt>nest</tt></dt>
<dd>This indicates that the parameter can be excised using the
<a href="#int_trampoline">trampoline intrinsics</a>.</dd>