[clang] [llvm] [Clang] Add `__builtin_stack_address` (PR #148281)

[Eli Friedman via llvm-commits]

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@@ -0,0 +1,14 @@
+; RUN: llc < %s -mtriple=armv7 | FileCheck %s --check-prefix=armv7
+; RUN: llc < %s -mtriple=aarch64 | FileCheck %s --check-prefix=aarch64
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efriedma-quic wrote:

You can't put aarch64 testcases in llvm/test/CodeGen/ARM/.  They have to be in llvm/test/CodeGen/AArch64. (The backends are independent; this will cause a regression test failure if the "Arm" backend is enabled, but the "AArch64" backend is disabled.)

https://github.com/llvm/llvm-project/pull/148281