[lld] [ELF] Support relocatable files using CREL (PR #98115)

[Peter Smith via llvm-commits]

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@@ -1474,37 +1476,39 @@ template <class ELFT, class RelTy> void RelocationScanner::scanOne(RelTy *&i) {
       maybeReportUndefined(cast<Undefined>(sym), *sec, offset))
     return;
 
-  if (config->emachine == EM_PPC64) {
-    // We can separate the small code model relocations into 2 categories:
-    // 1) Those that access the compiler generated .toc sections.
-    // 2) Those that access the linker allocated got entries.
-    // lld allocates got entries to symbols on demand. Since we don't try to
-    // sort the got entries in any way, we don't have to track which objects
-    // have got-based small code model relocs. The .toc sections get placed
-    // after the end of the linker allocated .got section and we do sort those
-    // so sections addressed with small code model relocations come first.
-    if (type == R_PPC64_TOC16 || type == R_PPC64_TOC16_DS)
-      sec->file->ppc64SmallCodeModelTocRelocs = true;
-
-    // Record the TOC entry (.toc + addend) as not relaxable. See the comment in
-    // InputSectionBase::relocateAlloc().
-    if (type == R_PPC64_TOC16_LO && sym.isSection() && isa<Defined>(sym) &&
-        cast<Defined>(sym).section->name == ".toc")
-      ppc64noTocRelax.insert({&sym, addend});
-
-    if ((type == R_PPC64_TLSGD && expr == R_TLSDESC_CALL) ||
-        (type == R_PPC64_TLSLD && expr == R_TLSLD_HINT)) {
-      if (i == end) {
-        errorOrWarn("R_PPC64_TLSGD/R_PPC64_TLSLD may not be the last "
-                    "relocation" +
-                    getLocation(*sec, sym, offset));
-        return;
-      }
+  if constexpr (!RelTy::IsCrel) {
+    if (config->emachine == EM_PPC64) {
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smithp35 wrote:

For the benefit of other reviewers, the following part of the diff is just indendation change.

https://github.com/llvm/llvm-project/pull/98115