[clang] [llvm] [NFC][AMDGPU] Pre-commit clang and llvm tests for dynamic allocas (PR #120063)

[Matt Arsenault via llvm-commits]

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@@ -5,8 +5,46 @@ target datalayout = "A5"
 
 ; CHECK: in function test_dynamic_stackalloc{{.*}}: unsupported dynamic alloca
 
-define amdgpu_kernel void @test_dynamic_stackalloc(ptr addrspace(1) %out, i32 %n) {
+define amdgpu_kernel void @test_dynamic_stackalloc(i32 %n) {
   %alloca = alloca i32, i32 %n, addrspace(5)
-  store volatile i32 0, ptr addrspace(5) %alloca
+  store volatile i32 123, ptr addrspace(5) %alloca
   ret void
 }
+
+; CHECK: in function test_dynamic_stackalloc{{.*}}: unsupported dynamic alloca
+
+define amdgpu_kernel void @test_dynamic_stackalloc_multiple_allocas(i32 %n) {
+  %alloca1 = alloca i32, i32 8, addrspace(5)
+  %alloca2 = alloca i32, i32 %n, addrspace(5)
+  %alloca3 = alloca i32, i32 10, addrspace(5)
+  store volatile i32 1, ptr addrspace(5) %alloca1
+  store volatile i32 2, ptr addrspace(5) %alloca2
+  store volatile i32 3, ptr addrspace(5) %alloca3
+  ret void
+}
+
+; CHECK: in function test_dynamic_stackalloc{{.*}}: unsupported dynamic alloca
+
+define amdgpu_kernel void @test_dynamic_stackalloc_custom_alignment(i32 %n) {
+  %alloca = alloca i32, i32 %n, align 128, addrspace(5)
+  store volatile i32 1, ptr addrspace(5) %alloca
+  ret void
+}
+
+; CHECK: in function test_dynamic_stackalloc{{.*}}: unsupported dynamic alloca
+
+define amdgpu_kernel void @test_dynamic_stackalloc_non_entry_block(i32 %n) {
+  entry:
+    %cond = icmp eq i32 %n, 0
+    br i1 %cond, label %bb.0, label %bb.1
+
+  bb.0:
+    %alloca = alloca i32, i32 %n, align 64, addrspace(5)
+    %gep1 = getelementptr i32, ptr addrspace(5) %alloca, i32 1
+    store volatile i32 0, ptr addrspace(5) %alloca
+    store volatile i32 1, ptr addrspace(5) %gep1
+    br label %bb.1
+
+  bb.1:
+    ret void
+}
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arsenm wrote:

Should test with divergent size. Also from non-kernels 

https://github.com/llvm/llvm-project/pull/120063