[clang] [lld] [llvm] Integrated Distributed ThinLTO (DTLTO): Initial support (PR #126654)

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+# REQUIRES: x86
+
+## Test that generated JSON file for DTLTO is valid and contains the expected
+## options based on the LTO configuration.
+
+# RUN: rm -rf %t.dir && split-file %s %t.dir && cd %t.dir
+
+## Compile bitcode.
+# RUN: opt -thinlto-bc foo.ll -o foo.obj
+
+## Common command line arguments. Note that the use of validate.py will cause
+## the link to fail.
+# RUN: echo "foo.obj /entry:foo /subsystem:console \
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bd1976bris wrote:

I can't do this for `l.rsp` as it has macros that need expanding. However, I was able to use `#--- o.rsp`.

https://github.com/llvm/llvm-project/pull/126654