[clang] [flang] [clang][flang] Support -time in both clang and flang (PR #109165)

[Tarun Prabhu via cfe-commits]

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@@ -0,0 +1,24 @@
+// The -time option prints timing information for the various subcommands in a
+// format similar to that used by gcc. When compiling and linking, this will
+// include the time to call clang-${LLVM_VERSION_MAJOR} and the linker. Since
+// the name of the linker could vary across platforms, and name of the compiler
+// could be something different, just check that whatever is printed to stderr
+// looks like timing information.
+
+// RUN: %clang -time -c -O3 -o /dev/null %s 2>&1 \
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tarunprabhu wrote:

Thanks for the explanation. I have restricted the tests to only run on `x86_64-linux` with a comment explaining the reasoning for the restriction.

https://github.com/llvm/llvm-project/pull/109165