[PATCH] D25971: Change block and loop signature fixing

[Jacob Gravelle via llvm-commits]

jgravelle-google created this revision.
jgravelle-google added reviewers: dschuff, sunfish.
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We add block signatures to blocks at the ends of functions in order to
satisfy the constraints around unreachable. The way we do so breaks down
with more complex cfgs, particularly those emitted by repeated calls to
setjmp/longjmp.
Change the fixup from adding a type signature, to adding an unreachable
instruction.


https://reviews.llvm.org/D25971

Files:
  lib/Target/WebAssembly/WebAssemblyCFGStackify.cpp
  test/CodeGen/WebAssembly/cfg-stackify.ll

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