[lld] r319932 - Convert a check to checkLazy.

[Rafael Espindola via llvm-commits]

Author: rafael
Date: Wed Dec  6 11:17:20 2017
New Revision: 319932

URL: http://llvm.org/viewvc/llvm-project?rev=319932&view=rev
Log:
Convert a check to checkLazy.

This brings memory allocations when linking clang from 270.96MB to
267.80MB.

Modified:
    lld/trunk/ELF/InputFiles.cpp

Modified: lld/trunk/ELF/InputFiles.cpp
URL: http://llvm.org/viewvc/llvm-project/lld/trunk/ELF/InputFiles.cpp?rev=319932&r1=319931&r2=319932&view=diff
==============================================================================
--- lld/trunk/ELF/InputFiles.cpp (original)
+++ lld/trunk/ELF/InputFiles.cpp Wed Dec  6 11:17:20 2017
@@ -279,8 +279,9 @@ template <class ELFT>
 ArrayRef<typename ObjFile<ELFT>::Elf_Word>
 ObjFile<ELFT>::getShtGroupEntries(const Elf_Shdr &Sec) {
   const ELFFile<ELFT> &Obj = this->getObj();
-  ArrayRef<Elf_Word> Entries = check(
-      Obj.template getSectionContentsAsArray<Elf_Word>(&Sec), toString(this));
+  ArrayRef<Elf_Word> Entries =
+      checkLazy(Obj.template getSectionContentsAsArray<Elf_Word>(&Sec),
+                [=]() { return toString(this); });
   if (Entries.empty() || Entries[0] != GRP_COMDAT)
     fatal(toString(this) + ": unsupported SHT_GROUP format");
   return Entries.slice(1);