Andrew Kelley 55811d8dac stage2: introduce clangAssemblerSupportsMcpuArg
Clang has a completely inconsistent CLI for its integrated assembler for
each target architecture. For x86_64, for example, it does not accept
an -mcpu parameter, and emits "warning: unused parameter". However, for
ARM, -mcpu is needed in order to properly lower assembly to machine code
instructions (see new standalone test case provided thanks to @g-w1).

This is a compromise between
b8f85a805bf61ae11d6ee2bd6d8356fbc98ee3ba and
afb9f695b1bdbf81185e7d55d5783bcbab880989.
2021-05-23 21:51:10 -07:00

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export fn main(r0: u32, r1: u32, atags: u32) callconv(.C) noreturn {
unreachable; // never gets run so it doesn't matter
}
pub fn panic(msg: []const u8, error_return_trace: ?*@import("std").builtin.StackTrace) noreturn {
while (true) {}
}