This will be used in a future change to generate useful file names for
JIT routine asm listings.

Bug: b/174358505
Change-Id: I46b6f2a6993a15f57cd54aad5a83765e4e559e42
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/50789
Kokoro-Result: kokoro <noreply+kokoro@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>
Tested-by: Antonio Maiorano <amaiorano@google.com>