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/internalize.ll b/llvm/test/CodeGen/AMDGPU/internalize.ll
index 5a66699..968b1d3 100644
--- a/llvm/test/CodeGen/AMDGPU/internalize.ll
+++ b/llvm/test/CodeGen/AMDGPU/internalize.ll
@@ -8,14 +8,14 @@
 @gvar_used = addrspace(1) global i32 undef, align 4
 
 ; Function Attrs: alwaysinline nounwind
-define void @foo_unused(i32 addrspace(1)* %out) local_unnamed_addr #1 {
+define amdgpu_kernel void @foo_unused(i32 addrspace(1)* %out) local_unnamed_addr #1 {
 entry:
   store i32 1, i32 addrspace(1)* %out
   ret void
 }
 
 ; Function Attrs: alwaysinline nounwind
-define void @foo_used(i32 addrspace(1)* %out, i32 %tid) local_unnamed_addr #1 {
+define amdgpu_kernel void @foo_used(i32 addrspace(1)* %out, i32 %tid) local_unnamed_addr #1 {
 entry:
   store i32 %tid, i32 addrspace(1)* %out
   ret void