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/large-constant-initializer.ll b/llvm/test/CodeGen/AMDGPU/large-constant-initializer.ll
index 9975b1b..c46d68e 100644
--- a/llvm/test/CodeGen/AMDGPU/large-constant-initializer.ll
+++ b/llvm/test/CodeGen/AMDGPU/large-constant-initializer.ll
@@ -4,7 +4,7 @@
 
 @gv = external unnamed_addr addrspace(2) constant [239 x i32], align 4
 
-define void @opencv_cvtfloat_crash(i32 addrspace(1)* %out, i32 %x) nounwind {
+define amdgpu_kernel void @opencv_cvtfloat_crash(i32 addrspace(1)* %out, i32 %x) nounwind {
   %val = load i32, i32 addrspace(2)* getelementptr ([239 x i32], [239 x i32] addrspace(2)* @gv, i64 0, i64 239), align 4
   %mul12 = mul nsw i32 %val, 7
   br i1 undef, label %exit, label %bb