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/smrd-vccz-bug.ll b/llvm/test/CodeGen/AMDGPU/smrd-vccz-bug.ll
index daac5b9..343211b 100644
--- a/llvm/test/CodeGen/AMDGPU/smrd-vccz-bug.ll
+++ b/llvm/test/CodeGen/AMDGPU/smrd-vccz-bug.ll
@@ -12,7 +12,7 @@
 ; GCN: buffer_store_dword
 ; GCN: [[EXIT]]:
 ; GCN: s_endpgm
-define void @vccz_workaround(i32 addrspace(2)* %in, i32 addrspace(1)* %out, float %cond) {
+define amdgpu_kernel void @vccz_workaround(i32 addrspace(2)* %in, i32 addrspace(1)* %out, float %cond) {
 entry:
   %cnd = fcmp oeq float 0.0, %cond
   %sgpr = load volatile i32, i32 addrspace(2)* %in
@@ -32,7 +32,7 @@
 ; GCN: buffer_store_dword
 ; GCN: [[EXIT]]:
 ; GCN: s_endpgm
-define void @vccz_noworkaround(float addrspace(1)* %in, float addrspace(1)* %out) {
+define amdgpu_kernel void @vccz_noworkaround(float addrspace(1)* %in, float addrspace(1)* %out) {
 entry:
   %vgpr = load volatile float, float addrspace(1)* %in
   %cnd = fcmp oeq float 0.0, %vgpr