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674fdc9a28
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
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| .. | ||
| AlignOf.h | ||
| Allocator.h | ||
| CallSite.h | ||
| Casting.h | ||
| CFG.h | ||
| CommandLine.h | ||
| Compiler.h | ||
| ConstantFolder.h | ||
| ConstantRange.h | ||
| DataFlow.h | ||
| Debug.h | ||
| DebugLoc.h | ||
| DOTGraphTraits.h | ||
| Dwarf.h | ||
| DynamicLinker.h | ||
| ELF.h | ||
| ErrorHandling.h | ||
| FileUtilities.h | ||
| Format.h | ||
| FormattedStream.h | ||
| GetElementPtrTypeIterator.h | ||
| GraphWriter.h | ||
| InstIterator.h | ||
| InstVisitor.h | ||
| IRBuilder.h | ||
| IRReader.h | ||
| LeakDetector.h | ||
| ManagedStatic.h | ||
| Mangler.h | ||
| MathExtras.h | ||
| MemoryBuffer.h | ||
| MemoryObject.h | ||
| MutexGuard.h | ||
| NoFolder.h | ||
| OutputBuffer.h | ||
| PassNameParser.h | ||
| PatternMatch.h | ||
| PluginLoader.h | ||
| PointerLikeTypeTraits.h | ||
| PredIteratorCache.h | ||
| PrettyStackTrace.h | ||
| raw_os_ostream.h | ||
| raw_ostream.h | ||
| Recycler.h | ||
| RecyclingAllocator.h | ||
| Regex.h | ||
| Registry.h | ||
| RegistryParser.h | ||
| SlowOperationInformer.h | ||
| SourceMgr.h | ||
| StableBasicBlockNumbering.h | ||
| StandardPasses.h | ||
| StringPool.h | ||
| SystemUtils.h | ||
| TargetFolder.h | ||
| Timer.h | ||
| type_traits.h | ||
| TypeBuilder.h | ||
| ValueHandle.h | ||