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Amir Ayupov de3e3fcfa3 [BOLT][CMAKE] Accept BOLT_CLANG_EXE and BOLT_LLD_EXE 
Add CMake options to supply clang and lld binaries for use in check-bolt
instead of requiring the build of clang and lld projects.

Suggested by Mehdi Amini in https://lists.llvm.org/pipermail/llvm-dev/2021-December/154426.html

Test Plan:
```
cmake -G Ninja ~/local/llvm-project/llvm \
-DLLVM_TARGETS_TO_BUILD="X86"  \
-DCMAKE_BUILD_TYPE=Release \
-DLLVM_ENABLE_ASSERTIONS=ON \
-DLLVM_ENABLE_PROJECTS="bolt"  \
-DBOLT_CLANG_EXE=~/local/bin/clang \
-DBOLT_LLD_EXE=~/local/bin/lld

ninja check-bolt
...
llvm-lit: /home/aaupov/local/llvm-project/llvm/utils/lit/lit/llvm/config.py:436: note: using clang: /home/aaupov/local/bin/clang
llvm-lit: /home/aaupov/local/llvm-project/llvm/utils/lit/lit/llvm/config.py:436: note: using ld.lld: /home/aaupov/local/bin/ld.lld
llvm-lit: /home/aaupov/local/llvm-project/llvm/utils/lit/lit/llvm/config.py:436: note: using lld-link: /home/aaupov/local/bin/lld-link
llvm-lit: /home/aaupov/local/llvm-project/llvm/utils/lit/lit/llvm/config.py:436: note: using ld64.lld: /home/aaupov/local/bin/ld64.lld
llvm-lit: /home/aaupov/local/llvm-project/llvm/utils/lit/lit/llvm/config.py:436: note: using wasm-ld: /home/aaupov/local/bin/wasm-ld
...
```

Tested all configurations:
- LLVM_ENABLE_PROJECTS="bolt;clang;lld" + no BOLT_*_EXE
- LLVM_ENABLE_PROJECTS="bolt;clang" + BOLT_LLD_EXE
- LLVM_ENABLE_PROJECTS="bolt;lld" + BOLT_CLANG_EXE
- LLVM_ENABLE_PROJECTS="bolt" + BOLT_CLANG_EXE + BOLT_LLD_EXE
- LLVM_ENABLE_PROJECTS="bolt;clang;lld" + BOLT_CLANG_EXE + BOLT_LLD_EXE

Reviewed By: maksfb

Differential Revision: https://reviews.llvm.org/D117061
 		2022-01-15 04:37:29 -08:00
..
AArch64 [BOLT] Don't use ld.lld in tests 2021-12-21 07:36:35 -08:00
Inputs [PR] Fix update-debug-sections for AArch64 2021-12-08 16:53:38 +03:00
X86 [BOLT] Don't use ld.lld in tests 2021-12-21 07:36:35 -08:00
runtime [BOLT][TEST] Move exceptions-instrumentation.test to X86 2022-01-12 09:25:12 -08:00
CMakeLists.txt [BOLT][CMAKE] Accept BOLT_CLANG_EXE and BOLT_LLD_EXE 2022-01-15 04:37:29 -08:00
bolt-icf.test Re-enable Windows build and fix issues 2021-12-23 05:59:35 -08:00
keep-aranges.test Re-enable Windows build and fix issues 2021-12-23 05:59:35 -08:00
link_fdata.py [BOLT][TEST] Import jump-table-icp.test, update link_fdata script 2021-11-08 10:56:21 -08:00
lit.cfg.py [BOLT][CMAKE] Accept BOLT_CLANG_EXE and BOLT_LLD_EXE 2022-01-15 04:37:29 -08:00
lit.site.cfg.py.in [BOLT][CMAKE] Accept BOLT_CLANG_EXE and BOLT_LLD_EXE 2022-01-15 04:37:29 -08:00
non-empty-debug-line.test Re-enable Windows build and fix issues 2021-12-23 05:59:35 -08:00