[llvm] [clang] [AIX][TLS] Disallow the use of -maix-small-local-exec-tls and -fno-data-sections (PR #79252)

[Stefan Pintilie via cfe-commits]

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@@ -4,6 +4,9 @@
 ; RUN:   < %s 2>&1 | FileCheck %s --check-prefix=CHECK-NOT-SUPPORTED
 ; RUN: not llc -mtriple powerpc64le-unknown-linux-gnu -ppc-asm-full-reg-names \
 ; RUN:   < %s 2>&1 | FileCheck %s --check-prefix=CHECK-NOT-SUPPORTED
+; RUN: not llc -mtriple powerpc64-ibm-aix-xcoff -ppc-asm-full-reg-names \
+; RUN:   -data-sections=false < %s 2>&1 | \
+; RUN: FileCheck %s --check-prefix=CHECK-NOT-SUPPORTED-NO-DATASEC
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stefanp-ibm wrote:

nit:
I realize that this is how things are done above but using CHECK-NOT-SOMETHING is really confusing. I had to wrap my brain around it and realize that this was indeed a CHECK and not a CHECK-NOT.

How about `CHECK-UNSUPPORTED-NO-DATASEC` like the first test case.

https://github.com/llvm/llvm-project/pull/79252