Add comments. Addressing review comments from Evan on r204690.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204864 91177308-0d34-0410-b5e6-96231b3b80d8
This is a fix for PR# 19051. I noticed code gen differences due to code motion when running tests with and without the debug info at O2. The problem is in branch folding. A loop wanted to skip the debug info, but actually it didn't do so.




git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204865 91177308-0d34-0410-b5e6-96231b3b80d8
CloneFunction: Clone all attributes, including the CC

Summary:
Tested with a unit test because we don't appear to have any transforms
that use this other than ASan, I think.

Fixes PR17935.

Reviewers: nicholas

CC: llvm-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D3194

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llvm-cov: Disable test on big endian machines

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204868 91177308-0d34-0410-b5e6-96231b3b80d8
llvm-cov: Move XFAIL after the body of the test

llvm-cov tests are sensitive to line number changes, so putting this
at the end will limit churn when we fix the XFAIL.

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[PowerPC] Generate VSX permutations for v2[fi]64 vectors

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204873 91177308-0d34-0410-b5e6-96231b3b80d8
Reorder arguments on test command line to make it easier to cut and
paste.

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Treat lifetime.start'd memory like we treat freshly alloca'd memory. Patch by Björn Steinbrink!


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X86: Correct vectorization cost model for v8f32->v8i8.

Fix the cost model to reflect the reality of our codegen.

rdar://16370633

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llvm-cov: When reading strings in gcov data, skip leading zeros

It seems that gcov, when faced with a string that is apparently zero
length, just keeps reading words until it finds a length it likes
better. I'm not really sure why this is, but it's simple enough to
make llvm-cov follow suit.

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add 'requires asserts' to test that needs it

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204882 91177308-0d34-0410-b5e6-96231b3b80d8
Correctly propagates st_size.

This also finally removes a bogus call to AliasedSymbol.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204883 91177308-0d34-0410-b5e6-96231b3b80d8
[X86][Vectorizer Cost Model] Correct vectorization cost model for v2i64->v2f64
and v4i64->v4f64.

The new costs match what we did for SSE2 and reflect the reality of our codegen.

<rdar://problem/16381225>


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Remove forward declaration for Target class - Target is already defined here.

No functional change.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204885 91177308-0d34-0410-b5e6-96231b3b80d8
inalloca: Fix incorrect example IR and remove LangRef warning

The LangRef warning wasn't formatting the way I intended it to anyway.

Surprisingly inalloca appears to work, even when optimizations are
enabled.  We generate very bad code for it, but we can self-host and run
lots of big tests.

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Remove unneeded stale type.

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inalloca: *Really* fix the docs

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Update MCSymbolizer and its subclasses' constructors to reflect the fact that
they take ownership of the RelocationInfo they're constructed with.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204891 91177308-0d34-0410-b5e6-96231b3b80d8
Move MCSymbolizer's constructor into header. It's trivial - there's no need for
it to be out-of-line.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204892 91177308-0d34-0410-b5e6-96231b3b80d8
Assert that MCSymbolizer is constructed with a valid (or at least non-null)
RelocationInfo argument.


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