[orc] Add the name of static archives to the name of their member objects

[benlangmuir]

Changes "MyObj.o" to "/path/to/libMyLib.a(MyObj.o)".

This allows us to differentiate between objects that have the same basename but came from different archives. It also fixes a bug where if two such objects were both linked and both have initializer sections their initializer symbol would cause a duplicate symbol error.

rdar://131782514

[lhames]

LGTM. Thanks @benlangmuir!

[llvm-ci]

LLVM Buildbot has detected a new failure on builder lld-x86_64-ubuntu-fast running on as-builder-4 while building llvm at step 6 "test-build-unified-tree-check-all".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/33/builds/947

Here is the relevant piece of the build log for the reference:

Step 6 (test-build-unified-tree-check-all) failure: test (failure)
******************** TEST 'LLVM :: CodeGen/RISCV/rvv/fixed-vectors-vwmul.ll' FAILED ********************
Exit Code: 1

Command Output (stderr):
--
RUN: at line 2: /home/buildbot/worker/as-builder-4/ramdisk/lld-x86_64/build/bin/llc -mtriple=riscv32 -mattr=+v -verify-machineinstrs < /home/buildbot/worker/as-builder-4/ramdisk/lld-x86_64/llvm-project/llvm/test/CodeGen/RISCV/rvv/fixed-vectors-vwmul.ll | /home/buildbot/worker/as-builder-4/ramdisk/lld-x86_64/build/bin/FileCheck /home/buildbot/worker/as-builder-4/ramdisk/lld-x86_64/llvm-project/llvm/test/CodeGen/RISCV/rvv/fixed-vectors-vwmul.ll --check-prefixes=CHECK,RV32
+ /home/buildbot/worker/as-builder-4/ramdisk/lld-x86_64/build/bin/llc -mtriple=riscv32 -mattr=+v -verify-machineinstrs
+ /home/buildbot/worker/as-builder-4/ramdisk/lld-x86_64/build/bin/FileCheck /home/buildbot/worker/as-builder-4/ramdisk/lld-x86_64/llvm-project/llvm/test/CodeGen/RISCV/rvv/fixed-vectors-vwmul.ll --check-prefixes=CHECK,RV32
/home/buildbot/worker/as-builder-4/ramdisk/lld-x86_64/llvm-project/llvm/test/CodeGen/RISCV/rvv/fixed-vectors-vwmul.ll:890:15: error: CHECK-NEXT: expected string not found in input
; CHECK-NEXT: vle8.v v8, (a1)
              ^
<stdin>:850:36: note: scanning from here
 vsetivli zero, 2, e16, mf4, ta, ma
                                   ^
<stdin>:851:2: note: possible intended match here
 vle8.v v8, (a0)
 ^

Input file: <stdin>
Check file: /home/buildbot/worker/as-builder-4/ramdisk/lld-x86_64/llvm-project/llvm/test/CodeGen/RISCV/rvv/fixed-vectors-vwmul.ll

-dump-input=help explains the following input dump.

Input was:
<<<<<<
            .
            .
            .
          845:  .type vwmul_v2i16_multiuse,@function 
          846:  .variant_cc vwmul_v2i16_multiuse 
          847: vwmul_v2i16_multiuse: # @vwmul_v2i16_multiuse 
          848:  .cfi_startproc 
          849: # %bb.0: 
          850:  vsetivli zero, 2, e16, mf4, ta, ma 
next:890'0                                        X error: no match found
          851:  vle8.v v8, (a0) 
next:890'0     ~~~~~~~~~~~~~~~~~
next:890'1      ?                possible intended match
          852:  vle8.v v9, (a1) 
next:890'0     ~~~~~~~~~~~~~~~~~
          853:  vle8.v v10, (a2) 
next:890'0     ~~~~~~~~~~~~~~~~~~
          854:  vle8.v v11, (a3) 
next:890'0     ~~~~~~~~~~~~~~~~~~
          855:  vsext.vf2 v12, v8 
next:890'0     ~~~~~~~~~~~~~~~~~~~
          856:  vsext.vf2 v8, v9 
next:890'0     ~~~~~~~~~~~~~~~~~~
            .
            .
...