[WebAssembly] Move .debug_line section address of dead function outside section range
Currently we are pointing all debug information that refer removed function code
to the beginning of the code section (offset = 0). A debugger may want to
resolve code offset to the debug information, which will collide with offsets
of the live functions.
Moving offsets of dead functions outside code section range.
Reviewed By: sbc100
Subscribers: dblaikie, ruiu, alexcrichton, dschuff, aprantl, jgravelle-google, aheejin, sunfish, JDevlieghere, llvm-commits
Differential Revision: https://reviews.llvm.org/D49446