AMDGPU: Add option to stress calls

This inverts the behavior of the AlwaysInline pass to mark
every function not already marked alwaysinline as noinline.

llvm-svn: 313865

1 files changed, 36 insertions, 0 deletions

diff --git a/llvm/test/CodeGen/AMDGPU/stress-calls.ll b/llvm/test/CodeGen/AMDGPU/stress-calls.ll
new file mode 100644
index 00000000000..480d40d67d4
--- /dev/null
+++ b/llvm/test/CodeGen/AMDGPU/stress-calls.ll
@@ -0,0 +1,36 @@
+; RUN: opt -S -amdgpu-stress-function-calls -amdgpu-always-inline %s | FileCheck %s
+
+; CHECK: define internal fastcc i32 @alwaysinline_func(i32 %a) #0 {
+define internal fastcc i32 @alwaysinline_func(i32 %a) alwaysinline {
+entry:
+  %tmp0 = add i32 %a, 1
+  ret i32 %tmp0
+}
+
+; CHECK: define internal fastcc i32 @noinline_func(i32 %a) #1 {
+define internal fastcc i32 @noinline_func(i32 %a) noinline {
+entry:
+  %tmp0 = add i32 %a, 2
+  ret i32 %tmp0
+}
+
+; CHECK: define internal fastcc i32 @unmarked_func(i32 %a) #1 {
+define internal fastcc i32 @unmarked_func(i32 %a) {
+entry:
+  %tmp0 = add i32 %a, 3
+  ret i32 %tmp0
+}
+
+define amdgpu_kernel void @kernel(i32 addrspace(1)* %out) {
+entry:
+  %tmp0 = call i32 @alwaysinline_func(i32 1)
+  store volatile i32 %tmp0, i32 addrspace(1)* %out
+  %tmp1 = call i32 @noinline_func(i32 1)
+  store volatile i32 %tmp1, i32 addrspace(1)* %out
+  %tmp2 = call i32 @unmarked_func(i32 1)
+  store volatile i32 %tmp2, i32 addrspace(1)* %out
+  ret void
+}
+
+; CHECK: attributes #0 = { alwaysinline }
+; CHECK: attributes #1 = { noinline }