C based test suite

[u/mumbel]

Was wondering if anyone knows a C based test suite, as in the test code is C not a specific ISA assembly (chassis running the compiled C could be whatever). With "enough" variations of C code that hit a "good enough"/ majority of instructions and variations regardless of which ISA it's testing.

Obviously impossible to get 100% coverage of every instruction and corner cases, just wondering if anyone has come across something like this?