llvm-project/lld/test/elf2/no-obj.s

// RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t.o
// RUN: llvm-ar rcs %t.a %t.o
// RUN: not ld.lld2 -o %t2 -u _start %t.a 2>&1 | FileCheck %s

// CHECK: -m or at least a .o file required

.global _start
_start:
ELF2: Make SymbolTable a template class. SymbolTable was not a template class. Instead we had switch-case-based type dispatch to call desired functions. We had to do that because SymbolTable was created before we know what ELF type objects had been passed. Every time I tried to add a new function to the symbol table, I had to define a dispatcher which consist of a single switch statement. It also brought an restriction what the driver can do. For example, we cannot add undefined symbols before any files are added to the symbol table. That's because no symbols can be added until the symbol table knows the ELF type, but when it knows about that, it's too late. In this patch, the driver makes a decision on what ELF type objects are being handled. Then the driver creates a SymbolTable object for an appropriate ELF type. http://reviews.llvm.org/D13544 llvm-svn: 249902 2015-10-10 05:07:25 +08:00			`// RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t.o`
			`// RUN: llvm-ar rcs %t.a %t.o`
			`// RUN: not ld.lld2 -o %t2 -u _start %t.a 2>&1 \| FileCheck %s`

			`// CHECK: -m or at least a .o file required`

			`.global _start`
			`_start:`