[llvm] [llc][NPM] Use buffer_ostream support for non-seekable streams (PR #168842)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `reverse-iteration` running on `hexagon-build-03` while building `llvm` at step 6 "check_all".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/110/builds/6421

<details>
<summary>Here is the relevant piece of the build log for the reference</summary>

```
Step 6 (check_all) failure: test (failure)
******************** TEST 'Clang :: Interpreter/cxx20-modules.cppm' FAILED ********************
Exit Code: 2

Command Output (stdout):
--
# RUN: at line 3
rm -rf /local/mnt/workspace/bots/hexagon-build-03/reverse-iteration/llvm.obj/tools/clang/test/Interpreter/Output/cxx20-modules.cppm.tmp
# executed command: rm -rf /local/mnt/workspace/bots/hexagon-build-03/reverse-iteration/llvm.obj/tools/clang/test/Interpreter/Output/cxx20-modules.cppm.tmp
# RUN: at line 4
mkdir -p /local/mnt/workspace/bots/hexagon-build-03/reverse-iteration/llvm.obj/tools/clang/test/Interpreter/Output/cxx20-modules.cppm.tmp
# executed command: mkdir -p /local/mnt/workspace/bots/hexagon-build-03/reverse-iteration/llvm.obj/tools/clang/test/Interpreter/Output/cxx20-modules.cppm.tmp
# RUN: at line 5
split-file /local/mnt/workspace/bots/hexagon-build-03/reverse-iteration/llvm.src/clang/test/Interpreter/cxx20-modules.cppm /local/mnt/workspace/bots/hexagon-build-03/reverse-iteration/llvm.obj/tools/clang/test/Interpreter/Output/cxx20-modules.cppm.tmp
# executed command: split-file /local/mnt/workspace/bots/hexagon-build-03/reverse-iteration/llvm.src/clang/test/Interpreter/cxx20-modules.cppm /local/mnt/workspace/bots/hexagon-build-03/reverse-iteration/llvm.obj/tools/clang/test/Interpreter/Output/cxx20-modules.cppm.tmp
# RUN: at line 7
/local/mnt/workspace/bots/hexagon-build-03/reverse-iteration/llvm.obj/bin/clang -std=c++20 /local/mnt/workspace/bots/hexagon-build-03/reverse-iteration/llvm.obj/tools/clang/test/Interpreter/Output/cxx20-modules.cppm.tmp/mod.cppm --precompile      -o /local/mnt/workspace/bots/hexagon-build-03/reverse-iteration/llvm.obj/tools/clang/test/Interpreter/Output/cxx20-modules.cppm.tmp/mod.pcm --target=x86_64-linux-gnu
# executed command: /local/mnt/workspace/bots/hexagon-build-03/reverse-iteration/llvm.obj/bin/clang -std=c++20 /local/mnt/workspace/bots/hexagon-build-03/reverse-iteration/llvm.obj/tools/clang/test/Interpreter/Output/cxx20-modules.cppm.tmp/mod.cppm --precompile -o /local/mnt/workspace/bots/hexagon-build-03/reverse-iteration/llvm.obj/tools/clang/test/Interpreter/Output/cxx20-modules.cppm.tmp/mod.pcm --target=x86_64-linux-gnu
# RUN: at line 9
/local/mnt/workspace/bots/hexagon-build-03/reverse-iteration/llvm.obj/bin/clang -fPIC /local/mnt/workspace/bots/hexagon-build-03/reverse-iteration/llvm.obj/tools/clang/test/Interpreter/Output/cxx20-modules.cppm.tmp/mod.pcm -c -o /local/mnt/workspace/bots/hexagon-build-03/reverse-iteration/llvm.obj/tools/clang/test/Interpreter/Output/cxx20-modules.cppm.tmp/mod.o --target=x86_64-linux-gnu
# executed command: /local/mnt/workspace/bots/hexagon-build-03/reverse-iteration/llvm.obj/bin/clang -fPIC /local/mnt/workspace/bots/hexagon-build-03/reverse-iteration/llvm.obj/tools/clang/test/Interpreter/Output/cxx20-modules.cppm.tmp/mod.pcm -c -o /local/mnt/workspace/bots/hexagon-build-03/reverse-iteration/llvm.obj/tools/clang/test/Interpreter/Output/cxx20-modules.cppm.tmp/mod.o --target=x86_64-linux-gnu
# RUN: at line 10
/local/mnt/workspace/bots/hexagon-build-03/reverse-iteration/llvm.obj/bin/clang -nostdlib -fPIC -shared /local/mnt/workspace/bots/hexagon-build-03/reverse-iteration/llvm.obj/tools/clang/test/Interpreter/Output/cxx20-modules.cppm.tmp/mod.o -o /local/mnt/workspace/bots/hexagon-build-03/reverse-iteration/llvm.obj/tools/clang/test/Interpreter/Output/cxx20-modules.cppm.tmp/libmod.so --target=x86_64-linux-gnu
# executed command: /local/mnt/workspace/bots/hexagon-build-03/reverse-iteration/llvm.obj/bin/clang -nostdlib -fPIC -shared /local/mnt/workspace/bots/hexagon-build-03/reverse-iteration/llvm.obj/tools/clang/test/Interpreter/Output/cxx20-modules.cppm.tmp/mod.o -o /local/mnt/workspace/bots/hexagon-build-03/reverse-iteration/llvm.obj/tools/clang/test/Interpreter/Output/cxx20-modules.cppm.tmp/libmod.so --target=x86_64-linux-gnu
# RUN: at line 12
cat /local/mnt/workspace/bots/hexagon-build-03/reverse-iteration/llvm.obj/tools/clang/test/Interpreter/Output/cxx20-modules.cppm.tmp/import.cpp | env LD_LIBRARY_PATH=/local/mnt/workspace/bots/hexagon-build-03/reverse-iteration/llvm.obj/tools/clang/test/Interpreter/Output/cxx20-modules.cppm.tmp:$LD_LIBRARY_PATH      /local/mnt/workspace/bots/hexagon-build-03/reverse-iteration/llvm.obj/bin/clang-repl -Xcc=-std=c++20 -Xcc=-fmodule-file=M=/local/mnt/workspace/bots/hexagon-build-03/reverse-iteration/llvm.obj/tools/clang/test/Interpreter/Output/cxx20-modules.cppm.tmp/mod.pcm      -Xcc=--target=x86_64-linux-gnu | /local/mnt/workspace/bots/hexagon-build-03/reverse-iteration/llvm.obj/bin/FileCheck /local/mnt/workspace/bots/hexagon-build-03/reverse-iteration/llvm.obj/tools/clang/test/Interpreter/Output/cxx20-modules.cppm.tmp/import.cpp
# executed command: cat /local/mnt/workspace/bots/hexagon-build-03/reverse-iteration/llvm.obj/tools/clang/test/Interpreter/Output/cxx20-modules.cppm.tmp/import.cpp
# .---command stdout------------
# | 
# | %lib libmod.so
# | 
# | import M;
# | 
# | extern "C" int printf(const char *, ...);
# | printf("%s\n", Hello());
# | 
# | // CHECK: Hello Interpreter for Modules!
# `-----------------------------
# executed command: env 'LD_LIBRARY_PATH=/local/mnt/workspace/bots/hexagon-build-03/reverse-iteration/llvm.obj/tools/clang/test/Interpreter/Output/cxx20-modules.cppm.tmp:$LD_LIBRARY_PATH' /local/mnt/workspace/bots/hexagon-build-03/reverse-iteration/llvm.obj/bin/clang-repl -Xcc=-std=c++20 -Xcc=-fmodule-file=M=/local/mnt/workspace/bots/hexagon-build-03/reverse-iteration/llvm.obj/tools/clang/test/Interpreter/Output/cxx20-modules.cppm.tmp/mod.pcm -Xcc=--target=x86_64-linux-gnu
# .---command stderr------------
# | /local/mnt/workspace/bots/hexagon-build-03/reverse-iteration/llvm.obj/bin/clang-repl: error while loading shared libraries: libc++.so.1: cannot open shared object file: No such file or directory
# `-----------------------------
# error: command failed with exit status: 127
# executed command: /local/mnt/workspace/bots/hexagon-build-03/reverse-iteration/llvm.obj/bin/FileCheck /local/mnt/workspace/bots/hexagon-build-03/reverse-iteration/llvm.obj/tools/clang/test/Interpreter/Output/cxx20-modules.cppm.tmp/import.cpp
# .---command stderr------------
# | FileCheck error: '<stdin>' is empty.
# | FileCheck command line:  /local/mnt/workspace/bots/hexagon-build-03/reverse-iteration/llvm.obj/bin/FileCheck /local/mnt/workspace/bots/hexagon-build-03/reverse-iteration/llvm.obj/tools/clang/test/Interpreter/Output/cxx20-modules.cppm.tmp/import.cpp
# `-----------------------------
# error: command failed with exit status: 2

--
...

```

</details>

https://github.com/llvm/llvm-project/pull/168842