LLD fails on TI provided ld scripts

[mskvortsov]

The error:

ld.lld -T msp430c111.ld -o test test.o
ld.lld: error: no memory region specified for section '.stack'

The section declaration is the same across all the scripts:

  .stack (ORIGIN (RAM) + LENGTH(RAM)) :
  {
    PROVIDE (__stack = .);
    *(.stack)
  }

[mskvortsov]

This patch can be used as a workaround:

diff --git a/ELF/LinkerScript.cpp b/ELF/LinkerScript.cpp
index d1ca2a613..2bdf5f136 100644
--- a/ELF/LinkerScript.cpp
+++ b/ELF/LinkerScript.cpp
@@ -747,6 +747,10 @@ MemoryRegion *LinkerScript::findMemoryRegion(OutputSection *Sec) {
       return M;
   }
 
+  // If the section is empty, let it have no region.
+  if (!Sec->Size && getInputSections(Sec).empty())
+    return nullptr;
+
   // Otherwise, no suitable region was found.
   if (Sec->Flags & SHF_ALLOC)
     error("no memory region specified for section '" + Sec->Name + "'");

[mskvortsov]

Possible solution: d5e74fc