[PATCH] D68611: [IRGen] Emit lifetime markers for temporary struct allocas

[Francis Visoiu Mistrih via Phabricator via llvm-commits]

thegameg created this revision.
thegameg added reviewers: rjmccall, t.p.northover, efriedma, rnk.

When passing arguments using temporary allocas, we need to add the appropriate lifetime markers so that the stack coloring passes can re-use the stack space.

This patch keeps track of all the lifetime.start calls emited before the codegened call, and adds the corresponding lifetime.end calls after the call.


https://reviews.llvm.org/D68611

Files:
  clang/lib/CodeGen/CGCall.cpp
  clang/test/CodeGen/aarch64-byval-temp.c

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