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compiler: add nounwind attribute

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This attribute is also set by Clang when it compiles C source files
(unless -fexceptions is set). The advantage is that no unwind tables are
emitted on Linux (and perhaps other systems). It also avoids
__aeabi_unwind_cpp_pr0 on ARM when using the musl libc.
This commit is contained in:
Ayke van Laethem
2021-09-13 18:19:26 +02:00
committed by Ron Evans
parent 112b369636
commit 478dd3a28d
18 changed files with 357 additions and 199 deletions
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compiler/interface.go
+1
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@@ -489,6 +489,7 @@ func (c *compilerContext) getInterfaceInvokeWrapper(fn *ssa.Function, llvmFn llv
paramTypes := append([]llvm.Type{c.i8ptrType}, fnType.ParamTypes()[len(expandedReceiverType):]...)
wrapFnType := llvm.FunctionType(fnType.ReturnType(), paramTypes, false)
wrapper = llvm.AddFunction(c.mod, wrapperName, wrapFnType)
c.addStandardAttributes(wrapper)
wrapper.LastParam().SetName("parentHandle")
wrapper.SetLinkage(llvm.LinkOnceODRLinkage)