llvm/tools/llvm-diff, branch release_28

Quiesce warning about non-virtual d'tor in virtual class.

2010-09-03T18:41:20Z

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112991 91177308-0d34-0410-b5e6-96231b3b80d8

Fix the msvs 2010 build.

2010-08-27T02:49:45Z

The Microsoft (R) 32-bit C/C++ Optimizing Compiler Version 16.00.30319.01 implements parts of C++0x based on the draft standard. An old version of the draft had a bug that makes std::pair(something, 0) fail to compile. This is because the template pair(U&& x, V&& y) constructor is selected, even though it later fails to implicitly convert U and V to frist_type and second_type. This has been fixed in n3090, but it seems that Microsoft is not going to update msvc. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112257 91177308-0d34-0410-b5e6-96231b3b80d8

Check in a couple of changes that I apparently never committed:

2010-08-24T09:16:51Z

- teach DifferenceEngine to unify successors of calls and invokes in certain circumstances - basic blocks actually don't have their own numbering; did that change? - add llvm-diff to the Makefile and CMake build systems git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111909 91177308-0d34-0410-b5e6-96231b3b80d8

Transcribe IRC to svn. Also don't print basic block names twice if they match.

2010-07-29T18:20:13Z

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109787 91177308-0d34-0410-b5e6-96231b3b80d8

Make the header self-contained and follow #include guidelines.

2010-07-29T18:08:23Z

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109774 91177308-0d34-0410-b5e6-96231b3b80d8

Switch to using the LLVM CommandLine library so that our help

2010-07-29T17:55:00Z

message is properly contaminated with nonsense about timing passes that doesn't apply at all to this utility. :) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109769 91177308-0d34-0410-b5e6-96231b3b80d8

Centralize the logic to permanently unify two instructions and make sure

2010-07-29T09:20:34Z

it establishes a context and does a complaining diff. Also make sure we unify the prelude and postlude of a diff after a block-diff call. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109744 91177308-0d34-0410-b5e6-96231b3b80d8

Diagnose non-structural differences in the case where blocks were

2010-07-29T09:04:45Z

structurally identical. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109743 91177308-0d34-0410-b5e6-96231b3b80d8

When unifying instructions during a block diff, actually complain about

2010-07-29T08:59:27Z

any differences we see. This should only happen if there are "non-structural" differences between the instructions, i.e. differences which wouldn't cause diff to return true. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109742 91177308-0d34-0410-b5e6-96231b3b80d8

Somehow I was getting reasonable results for the test cases I was interested

2010-07-29T08:53:59Z

in despite not ever incrementing any path costs, so that the only nonzero costs arose from the all-left path in the first column. Anyway. Perform the diff starting from the beginning of the block to avoid capturing (say) loads of allocas. Vastly improves diff results on code that hasn't been mem2reg'ed. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109741 91177308-0d34-0410-b5e6-96231b3b80d8