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Redo "Annotate exception handling with call site effects (#359)" #389

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Redo "Annotate exception handling with call site effects (#359)" #389

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10 changes: 8 additions & 2 deletions src/irgen.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -265,11 +265,14 @@ function emit_exception!(builder, name, inst)
# report the exception
if Base.JLOptions().debug_level >= 1
name = globalstring_ptr!(builder, name, "exception")
if Base.JLOptions().debug_level == 1
c = if Base.JLOptions().debug_level == 1
call!(builder, Runtime.get(:report_exception), [name])
else
call!(builder, Runtime.get(:report_exception_name), [name])
end
callsite_attribute!(c, (
LLVM.EnumAttribute("inaccessiblememonly", 0; ctx),
LLVM.EnumAttribute("writeonly", 0; ctx)))
end

# report each frame
Expand All @@ -287,7 +290,10 @@ function emit_exception!(builder, name, inst)
end

# signal the exception
call!(builder, Runtime.get(:signal_exception))
c = call!(builder, Runtime.get(:signal_exception))
callsite_attribute!(c, (
LLVM.EnumAttribute("inaccessiblememonly", 0; ctx),
LLVM.EnumAttribute("writeonly", 0; ctx)))

emit_trap!(job, builder, mod, inst)
end
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7 changes: 7 additions & 0 deletions src/utils.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -113,3 +113,10 @@ macro unlocked(ex)
end
esc(combinedef(def))
end

function callsite_attribute!(call, attributes)
# TODO: Make a nice API for this in LLVM.jl
for attribute in attributes
LLVM.API.LLVMAddCallSiteAttribute(call, LLVM.API.LLVMAttributeFunctionIndex, attribute)
end
end