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* ARM: track globals promoted to coalesced const pool entriesSaleem Abdulrasool2017-09-071-0/+21
Globals that are promoted to an ARM constant pool may alias with another existing constant pool entry. We need to keep a reference to all globals that were promoted to each constant pool value so that we can emit a distinct label for each promoted global. These labels are necessary so that debug info can refer to the promoted global without an undefined reference during linking. Patch by Stephen Crane! llvm-svn: 312692
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