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Summary: When @llvm.returnaddress is called with a value higher than 0 it needs to read from the call stack to get the return address. This means that the register windows needs to be flushed to the stack to guarantee that the data read is valid. For values higher than 1 this is done indirectly by the call to getFRAMEADDR(), but not for the value 1. Reviewers: jyknight, venkatra Reviewed By: jyknight Subscribers: fedor.sergeev, jrtc27, llvm-commits Differential Revision: https://reviews.llvm.org/D48636 llvm-svn: 340003
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