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

[Fangrui Song via cfe-commits]

================
@@ -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 \
----------------
MaskRay wrote:

This requires a hard-coded target triple like `--target=x86_64` and `REQUIRES: x86-registered-target`.

Delete unneeded -O3.

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