AMDGPU: Mark all unspecified CC functions in tests as amdgpu_kernel

Currently the default C calling convention functions are treated
the same as compute kernels. Make this explicit so the default
calling convention can be changed to a non-kernel.

Converted with perl -pi -e 's/define void/define amdgpu_kernel void/'
on the relevant test directories (and undoing in one place that actually
wanted a non-kernel).

llvm-svn: 298444
diff --git a/llvm/test/CodeGen/AMDGPU/extract-vector-elt-build-vector-combine.ll b/llvm/test/CodeGen/AMDGPU/extract-vector-elt-build-vector-combine.ll
index 4edff15..be85ca9 100644
--- a/llvm/test/CodeGen/AMDGPU/extract-vector-elt-build-vector-combine.ll
+++ b/llvm/test/CodeGen/AMDGPU/extract-vector-elt-build-vector-combine.ll
@@ -13,7 +13,7 @@
 ; GCN: buffer_store_dword
 ; GCN: buffer_store_dword
 ; GCN: buffer_store_dword
-define void @store_build_vector_multiple_uses_v4i32(<4 x i32> addrspace(1)* noalias %out0,
+define amdgpu_kernel void @store_build_vector_multiple_uses_v4i32(<4 x i32> addrspace(1)* noalias %out0,
                                                     <4 x i32> addrspace(1)* noalias %out1,
                                                     i32 addrspace(1)* noalias %out2,
                                                     i32 addrspace(1)* %in) {
@@ -55,7 +55,7 @@
 ; GCN: buffer_store_dword
 ; GCN: buffer_store_dword
 ; GCN: buffer_store_dword
-define void @store_build_vector_multiple_extract_uses_v4i32(<4 x i32> addrspace(1)* noalias %out0,
+define amdgpu_kernel void @store_build_vector_multiple_extract_uses_v4i32(<4 x i32> addrspace(1)* noalias %out0,
                                                             <4 x i32> addrspace(1)* noalias %out1,
                                                             i32 addrspace(1)* noalias %out2,
                                                             i32 addrspace(1)* %in) {
@@ -99,7 +99,7 @@
 
 ; GCN: buffer_store_dwordx2
 ; GCN: buffer_store_dwordx2
-define void @store_build_vector_multiple_uses_v4i32_bitcast_to_v2i64(<2 x i64> addrspace(1)* noalias %out0,
+define amdgpu_kernel void @store_build_vector_multiple_uses_v4i32_bitcast_to_v2i64(<2 x i64> addrspace(1)* noalias %out0,
                                                                      <4 x i32> addrspace(1)* noalias %out1,
                                                                      i64 addrspace(1)* noalias %out2,
                                                                      i32 addrspace(1)* %in) {