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/gv-offset-folding.ll b/llvm/test/CodeGen/AMDGPU/gv-offset-folding.ll
index 2b5af75..e641d72 100644
--- a/llvm/test/CodeGen/AMDGPU/gv-offset-folding.ll
+++ b/llvm/test/CodeGen/AMDGPU/gv-offset-folding.ll
@@ -13,7 +13,7 @@
 
 ; CHECK-LABEL: lds_no_offset:
 ; CHECK: ds_write_b32 v{{[0-9]+}}, v{{[0-9]+}} offset:4
-define void @lds_no_offset() {
+define amdgpu_kernel void @lds_no_offset() {
 entry:
   %ptr = getelementptr [4 x i32], [4 x i32] addrspace(3)* @lds, i32 0, i32 1
   store i32 0, i32 addrspace(3)* %ptr