Alexey Samsonov a9a3bc268b Let llvm::ReplaceInstWithInst copy debug location from old to new instruction.
Currently some users of this function do this explicitly, and all the
rest forget to do this.

ThreadSanitizer was one of such users, and had missing debug
locations for calls into TSan runtime handling atomic operations,
eventually leading to poorly symbolized stack traces and malfunctioning
suppressions.

This is another change relevant to PR23837.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@240460 91177308-0d34-0410-b5e6-96231b3b80d8
2015-06-23 21:00:08 +00:00
2015-06-23 20:57:26 +00:00

Low Level Virtual Machine (LLVM)
================================

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LLVM backend for 6502
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