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author | Duncan Sands <baldrick@free.fr> | 2009-11-03 09:40:08 +0000 |
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committer | Duncan Sands <baldrick@free.fr> | 2009-11-03 09:40:08 +0000 |
commit | 674fdc9a289c56edeb799bf5a8d4668f7e22bf73 (patch) | |
tree | 0e89e866838e44d7d5fc19fa35c80bc6faed1068 /unittests/ADT | |
parent | 8fd64a5e27bba6f8d1b87682beb6639d1223556d (diff) | |
download | external_llvm-674fdc9a289c56edeb799bf5a8d4668f7e22bf73.zip external_llvm-674fdc9a289c56edeb799bf5a8d4668f7e22bf73.tar.gz external_llvm-674fdc9a289c56edeb799bf5a8d4668f7e22bf73.tar.bz2 |
Run the functionattrs pass after the inliner, and not before.
This makes both logical sense (see below) and increases the
number of functions marked readnone/readonly by about 1-2%
in practice. The number of functions marked nocapture goes
up by about 5-10%. The reason it makes sense is shown by
the following example: if you run -functionattrs -inline on
it, then no attributes are assigned. But if you instead run
-inline -functionattrs then @f is marked readnone because the
simplifications produced by the inliner eliminate the store.
@x = external global i32
define void @w(i1 %b) {
br i1 %b, label %write, label %return
write:
store i32 1, i32 *@x
br label %return
return:
ret void
}
define void @f() {
call void @w(i1 0)
ret void
}
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85893 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'unittests/ADT')
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