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/lds-size.ll b/llvm/test/CodeGen/AMDGPU/lds-size.ll
index 1607713..c65817a 100644
--- a/llvm/test/CodeGen/AMDGPU/lds-size.ll
+++ b/llvm/test/CodeGen/AMDGPU/lds-size.ll
@@ -14,7 +14,7 @@
 ; GCN: ; LDSByteSize: 4 bytes/workgroup (compile time only)
 @lds = internal unnamed_addr addrspace(3) global i32 undef, align 4
 
-define void @test(i32 addrspace(1)* %out, i32 %cond) {
+define amdgpu_kernel void @test(i32 addrspace(1)* %out, i32 %cond) {
 entry:
   %0 = icmp eq i32 %cond, 0
   br i1 %0, label %if, label %else