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from 49044733df8 Fix GDB pretty printer for Optional after r354246 new a0926a5947a [DAGCombiner][X86][AArch64][AMDGPU] (x + C) - y -> (x - y [...] new 1504fb4b307 [DAGCombiner][X86][AArch64][SPARC][SystemZ] y - (x + C) -> [...] new 0430f97eacb [DAGCombine][X86][AArch64][AMDGPU] (x - y) + -1 -> add (x [...] new d96f9a2ce2c [DAGCombine] (x - C) - y -> (x - y) - C fold. Try 2

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Summary of changes: lib/CodeGen/SelectionDAG/DAGCombiner.cpp | 34 ++++++++++++ test/CodeGen/AArch64/shift-amount-mod.ll | 10 ++-- test/CodeGen/AArch64/sink-addsub-of-const.ll | 30 +++++----- test/CodeGen/AArch64/xor.ll | 18 +++--- test/CodeGen/AMDGPU/llvm.amdgcn.s.barrier.ll | 14 ++--- test/CodeGen/SPARC/2013-05-17-CallFrame.ll | 5 +- test/CodeGen/SystemZ/alloca-03.ll | 11 ++-- test/CodeGen/X86/combine-add.ll | 4 +- test/CodeGen/X86/ragreedy-hoist-spill.ll | 83 ++++++++++++++-------------- test/CodeGen/X86/shift-amount-mod.ll | 9 +-- test/CodeGen/X86/sink-addsub-of-const.ll | 52 ++++++++--------- test/CodeGen/X86/xor.ll | 62 +++++++++++---------- test/CodeGen/X86/zext-sext.ll | 21 +++---- 13 files changed, 190 insertions(+), 163 deletions(-)