compiler: add nounwind attribute

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
+2
View File
@@ -176,6 +176,7 @@ func (c *compilerContext) createGoroutineStartWrapper(fn llvm.Value, prefix stri
// Create the wrapper.
wrapperType := llvm.FunctionType(c.ctx.VoidType(), []llvm.Type{c.i8ptrType}, false)
wrapper = llvm.AddFunction(c.mod, name+"$gowrapper", wrapperType)
c.addStandardAttributes(wrapper)
wrapper.SetLinkage(llvm.LinkOnceODRLinkage)
wrapper.SetUnnamedAddr(true)
wrapper.AddAttributeAtIndex(-1, c.ctx.CreateStringAttribute("tinygo-gowrapper", name))
@@ -240,6 +241,7 @@ func (c *compilerContext) createGoroutineStartWrapper(fn llvm.Value, prefix stri
// Create the wrapper.
wrapperType := llvm.FunctionType(c.ctx.VoidType(), []llvm.Type{c.i8ptrType}, false)
wrapper = llvm.AddFunction(c.mod, prefix+".gowrapper", wrapperType)
c.addStandardAttributes(wrapper)
wrapper.SetLinkage(llvm.LinkOnceODRLinkage)
wrapper.SetUnnamedAddr(true)
wrapper.AddAttributeAtIndex(-1, c.ctx.CreateStringAttribute("tinygo-gowrapper", ""))