Vendor import of lld release_80 branch r364487:

https://llvm.org/svn/llvm-project/lld/branches/release_80@364487

ELF/Arch/PPC64.cpp

@@ -757,7 +757,10 @@ bool PPC64::needsThunk(RelExpr Expr, RelType Type, const InputFile *File,
 
   // If the offset exceeds the range of the branch type then it will need
   // a range-extending thunk.
-  return !inBranchRange(Type, BranchAddr, S.getVA());
+  // See the comment in getRelocTargetVA() about R_PPC64_CALL.
+  return !inBranchRange(Type, BranchAddr,
+                        S.getVA() +
+                            getPPC64GlobalEntryToLocalEntryOffset(S.StOther));
 }
 
 uint32_t PPC64::getThunkSectionSpacing() const {

test/ELF/ppc64-long-branch-localentry-offset.s

@@ -0,0 +1,30 @@
+# REQUIRES: ppc
+
+# RUN: llvm-mc -filetype=obj -triple=ppc64le %s -o %t.o
+# RUN: ld.lld %t.o -o %t
+# RUN: llvm-nm %t | FileCheck %s
+
+# CHECK-DAG: 0000000010010000 t __long_branch_callee
+# CHECK-DAG: 0000000010010010 T _start
+# CHECK-DAG: 0000000012010008 T callee
+
+# The bl instruction jumps to the local entry. The distance requires a long branch stub:
+# localentry(callee) - _start = 0x12010008+8 - 0x10010010 = 0x2000000
+
+# We used to compute globalentry(callee) - _start and caused a "R_PPC64_REL24
+# out of range" error because we didn't create the stub.
+
+.globl _start
+_start:
+  bl callee
+
+.space 0x1fffff4
+
+.globl callee
+callee:
+.Lgep0:
+  addis 2, 12, .TOC.-.Lgep0@ha
+  addi 2, 2, .TOC.-.Lgep0@l
+.Llep0:
+  .localentry callee, .Llep0-.Lgep0
+  blr