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

[via llvm-commits]

================
@@ -17,12 +13,62 @@ define amdgpu_kernel void @kernel_dynamic_stackalloc_vgpr_align4(ptr addrspace(1
   ret void
 }
 
+; ERR: remark: <unknown>:0:0: cannot select: %{{[0-9]+}}:sreg_32(p5) = G_DYN_STACKALLOC %{{[0-9]+}}:vgpr(s32), 1 (in function: kernel_dynamic_stackalloc_vgpr_default_align)
+; ERR-NEXT: warning: Instruction selection used fallback path for kernel_dynamic_stackalloc_vgpr_default_align
+; ERR-NEXT: error: <unknown>:0:0: in function kernel_dynamic_stackalloc_vgpr_default_align void (ptr addrspace(1)): unsupported dynamic alloca
+
+define amdgpu_kernel void @kernel_dynamic_stackalloc_vgpr_default_align(ptr addrspace(1) %ptr) {
+  %id = call i32 @llvm.amdgcn.workitem.id.x()
+  %gep = getelementptr i32, ptr addrspace(1) %ptr, i32 %id
+  %n = load i32, ptr addrspace(1) %gep
+  %alloca = alloca i32, i32 %n, addrspace(5)
+  store volatile ptr addrspace(5) %alloca, ptr addrspace(1) undef
+  ret void
+}
+
+; ERR: remark: <unknown>:0:0: cannot select: %{{[0-9]+}}:sreg_32(p5) = G_DYN_STACKALLOC %{{[0-9]+}}:vgpr(s32), 64 (in function: kernel_dynamic_stackalloc_vgpr_align64)
+; ERR-NEXT: warning: Instruction selection used fallback path for kernel_dynamic_stackalloc_vgpr_align64
+; ERR-NEXT: error: <unknown>:0:0: in function kernel_dynamic_stackalloc_vgpr_align64 void (ptr addrspace(1)): unsupported dynamic alloca
+
+define amdgpu_kernel void @kernel_dynamic_stackalloc_vgpr_align64(ptr addrspace(1) %ptr) {
+  %id = call i32 @llvm.amdgcn.workitem.id.x()
+  %gep = getelementptr i32, ptr addrspace(1) %ptr, i32 %id
+  %n = load i32, ptr addrspace(1) %gep
+  %alloca = alloca i32, i32 %n, align 64, addrspace(5)
+  store volatile ptr addrspace(5) %alloca, ptr addrspace(1) undef
+  ret void
+}
+
+; ERR: remark: <unknown>:0:0: cannot select: %{{[0-9]+}}:sreg_32(p5) = G_DYN_STACKALLOC %{{[0-9]+}}:vgpr(s32), 1 (in function: func_dynamic_stackalloc_vgpr_align4)
+; ERR-NEXT: warning: Instruction selection used fallback path for func_dynamic_stackalloc_vgpr_align4
+; ERR-NEXT: error: <unknown>:0:0: in function func_dynamic_stackalloc_vgpr_align4 void (i32): unsupported dynamic alloca
+
 define void @func_dynamic_stackalloc_vgpr_align4(i32 %n) {
   %alloca = alloca i32, i32 %n, align 4, addrspace(5)
   store volatile ptr addrspace(5) %alloca, ptr addrspace(1) undef
   ret void
 }
 
+; ERR: remark: <unknown>:0:0: cannot select: %{{[0-9]+}}:sreg_32(p5) = G_DYN_STACKALLOC %{{[0-9]+}}:vgpr(s32), 1 (in function: func_dynamic_stackalloc_vgpr_default_align)
+; ERR-NEXT: warning: Instruction selection used fallback path for func_dynamic_stackalloc_vgpr_default_align
+; ERR-NEXT: error: <unknown>:0:0: in function func_dynamic_stackalloc_vgpr_default_align void (i32): unsupported dynamic alloca
+
+define void @func_dynamic_stackalloc_vgpr_default_align(i32 %n) {
+  %alloca = alloca i32, i32 %n, addrspace(5)
+  store volatile ptr addrspace(5) %alloca, ptr addrspace(1) undef
+  ret void
+}
----------------
easyonaadit wrote:

Yess got it

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