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2015 May 11
2
[LLVMdev] Interaction of stacksave/restore and stack spills
Hi everyone, I'm curious about the constraints that come with the usage of llvm.stacksave/llvm.stackrestore. Specifically I was wondering what the contract of their usage was with respect to SSA variables defined after llvm.stacksave. It seems to me that they could get spilled to a stack slot, which I'm concerned stackrestore might mess up. Is this a valid concern? Thanks, Keno