[AMDGPU] do not generate .AMDGPU.config for amdpal os type

Summary:
Now we generate PAL metadata for the amdpal os type, there is no need to
generate the .AMDGPU.config section.

Reviewers: arsenm, nhaehnle, dstuttard

Subscribers: kzhuravl, wdng, yaxunl, t-tye, llvm-commits

Differential Revision: https://reviews.llvm.org/D37760

Change-Id: I303c5fad66656ce97293da60621afac6595b4c18
llvm-svn: 324346
diff --git a/llvm/test/CodeGen/AMDGPU/amdpal.ll b/llvm/test/CodeGen/AMDGPU/amdpal.ll
index 3aaa589..c8f37fb 100644
--- a/llvm/test/CodeGen/AMDGPU/amdpal.ll
+++ b/llvm/test/CodeGen/AMDGPU/amdpal.ll
@@ -1,7 +1,7 @@
 ; RUN: llc < %s -mtriple=amdgcn--amdpal -mcpu=tahiti | FileCheck --check-prefix=PAL --enable-var-scope %s
 
-; PAL: .AMDGPU.config
-
+; PAL-NOT: .AMDGPU.config
+; PAL-LABEL: {{^}}simple:
 define amdgpu_kernel void @simple(i32 addrspace(1)* %out) {
 entry:
   store i32 0, i32 addrspace(1)* %out