[RewriteStatepointsForGC] Add tests for the base pointer identification algorithm

[oota-llvm.git] / test / Transforms / RewriteStatepointsForGC / base-pointers-5.ll

diff --git a/test/Transforms/RewriteStatepointsForGC/base-pointers-5.ll b/test/Transforms/RewriteStatepointsForGC/base-pointers-5.ll
new file mode 100644 (file)
index 0000000..8390ecd
--- /dev/null
+++ b/test/Transforms/RewriteStatepointsForGC/base-pointers-5.ll
@@ -0,0 +1,31 @@
+; RUN: opt %s -rewrite-statepoints-for-gc -spp-print-base-pointers -S 2>&1 | FileCheck %s
+
+; CHECK: derived %merged_value base %base_phi
+
+declare void @foo()
+
+define i64 addrspace(1)* @test(i64 addrspace(1)* %base_obj_x, i64 addrspace(1)* %base_obj_y, i1 %runtime_condition) gc "statepoint-example" {
+entry:
+  br i1 %runtime_condition, label %here, label %there
+
+here:
+  br label %bump
+
+bump:
+  br label %merge
+
+there:
+  %y = getelementptr i64, i64 addrspace(1)* %base_obj_y, i32 1
+  br label %merge
+
+merge:
+; CHECK: merge:
+; CHECK:  %base_phi = phi i64 addrspace(1)* [ %base_obj_x, %bump ], [ %base_obj_y, %there ]
+; CHECK-NEXT:  %merged_value = phi i64 addrspace(1)* [ %base_obj_x, %bump ], [ %y, %there ]  
+  %merged_value = phi i64 addrspace(1)* [ %base_obj_x, %bump ], [ %y, %there ]
+  %safepoint_token = call i32 (void ()*, i32, i32, ...)* @llvm.experimental.gc.statepoint.p0f_isVoidf(void ()* @foo, i32 0, i32 0, i32 5, i32 0, i32 -1, i32 0, i32 0, i32 0)
+  ret i64 addrspace(1)* %merged_value
+}
+
+declare i32 @llvm.experimental.gc.statepoint.p0f_isVoidf(void ()*, i32, i32, ...)
+