[clang] [clang] Recover necessary AddrSpaceCast (PR #119246)

[Matt Arsenault via cfe-commits]

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@@ -0,0 +1,16 @@
+// RUN: %clang_cc1 -triple amdgcn-amd-amdhsa -aux-triple x86_64-unknown-linux-gnu -target-cpu gfx906 -fopenmp -nogpulib -fopenmp-is-target-device -emit-llvm %s -o - | FileCheck %s
+
+// Don't crash with assertions build.
+
+// CHECK:       @MyGlobVar = external thread_local addrspace(1) global i32, align 4
+// CHECK:       define weak_odr hidden noundef ptr @_ZTW9MyGlobVar() #0 comdat {
+// CHECK-NEXT:    %1 = call align 4 ptr addrspace(1) @llvm.threadlocal.address.p1(ptr addrspace(1) align 4 @MyGlobVar)
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arsenm wrote:

Do we support this intrinsic? 

https://github.com/llvm/llvm-project/pull/119246