[clang] [clang][sema] Suppress unsupported 128-bit mode attribute diagnostic for OpenMP device compilation (PR #214497)

[Aaron Ballman via cfe-commits]

================
@@ -0,0 +1,11 @@
+// Host-side compilation on x86 (no errors expected).
+// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -aux-triple nvptx64 -fopenmp -x c -fsyntax-only -verify=host %s
+
+// Device-side compilation for targets without 128-bit float/complex support (no errors expected).
----------------
AaronBallman wrote:

What happens if it is used from device code entry points or something called by them?

https://github.com/llvm/llvm-project/pull/214497