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/bfe_uint.ll b/llvm/test/CodeGen/AMDGPU/bfe_uint.ll
index 32e3fc2..2c8c9a5 100644
--- a/llvm/test/CodeGen/AMDGPU/bfe_uint.ll
+++ b/llvm/test/CodeGen/AMDGPU/bfe_uint.ll
@@ -2,7 +2,7 @@
 
 ; CHECK: {{^}}bfe_def:
 ; CHECK: BFE_UINT
-define void @bfe_def(i32 addrspace(1)* %out, i32 %x) {
+define amdgpu_kernel void @bfe_def(i32 addrspace(1)* %out, i32 %x) {
 entry:
   %0 = lshr i32 %x, 5
   %1 = and i32 %0, 15 ; 0xf
@@ -17,7 +17,7 @@
 
 ; CHECK: {{^}}bfe_shift:
 ; CHECK-NOT: BFE_UINT
-define void @bfe_shift(i32 addrspace(1)* %out, i32 %x) {
+define amdgpu_kernel void @bfe_shift(i32 addrspace(1)* %out, i32 %x) {
 entry:
   %0 = lshr i32 %x, 16
   %1 = and i32 %0, 65535 ; 0xffff