[llvm-mca] Move bad-input.s test to be target specific

... for now.

This is a follow up to #90474 in response to build bot failures.

This test is intended to check a case where invalid assembly is passed
to llvm-mca.

Unfortunately it appears that a cross-toolchain built with
-DTOOLCHAIN_TARGET_TRIPLE does not have an llvm-mca which works out of
the box if the host target is not enabled.

As a quick fix to make the build bots green, move the test into AArch64
and X86 so that there is reasonable coverage for this test; later I hope
mca can be fixed to work out of the box in this configuration.

Author: peterwaller-arm

llvm/test/tools/llvm-mca/bad-input.s renamed to llvm/test/tools/llvm-mca/AArch64/bad-input.s

@@ -0,0 +1,14 @@
+# RUN: not llvm-mca %s -o /dev/null 2>&1 | FileCheck --check-prefixes=CHECK-ALL,CHECK %s
+# RUN: not llvm-mca -skip-unsupported-instructions=none %s -o /dev/null 2>&1 | FileCheck --check-prefixes=CHECK-ALL,CHECK %s
+# RUN: not llvm-mca -skip-unsupported-instructions=lack-sched %s -o /dev/null 2>&1 | FileCheck --check-prefixes=CHECK-ALL,CHECK %s
+# RUN: not llvm-mca -skip-unsupported-instructions=parse-failure %s -o /dev/null 2>&1 | FileCheck --check-prefixes=CHECK-ALL,CHECK-SKIP %s
+# RUN: not llvm-mca -skip-unsupported-instructions=any %s -o /dev/null 2>&1 | FileCheck --check-prefixes=CHECK-ALL,CHECK-SKIP %s
+
+# Test checks that MCA does not produce a total cycles estimate if it encounters parse errors.
+
+# CHECK-ALL-NOT: Total Cycles:
+
+# CHECK: error: Assembly input parsing had errors, use -skip-unsupported-instructions=parse-failure to drop failing lines from the input.
+# CHECK-SKIP: error: no assembly instructions found.
+
+This is not a valid assembly file for any architecture (by virtue of this text.)