1 files changed, 38 insertions, 0 deletions
diff --git a/test/Transforms/PlaceSafepoints/call_gc_result.ll b/test/Transforms/PlaceSafepoints/call_gc_result.ll
new file mode 100644
index 0000000000000..d78a0989c3b1d
--- /dev/null
+++ b/test/Transforms/PlaceSafepoints/call_gc_result.ll
@@ -0,0 +1,38 @@
+;; RUN: opt %s -place-safepoints -S | FileCheck %s
+
+;; This test is to verify that gc_result from a call statepoint
+;; can have preceding phis in its parent basic block. Unlike
+;; invoke statepoint, call statepoint does not terminate the
+;; block, and thus its gc_result is in the same block with the
+;; call statepoint.
+
+declare i32 @foo()
+
+define i32 @test1(i1 %cond, i32 %a) gc "statepoint-example" {
+entry:
+  br i1 %cond, label %branch1, label %branch2
+  
+branch1:
+  %b = add i32 %a, 1
+  br label %merge
+ 
+branch2:
+  br label %merge
+
+merge:
+;; CHECK: 		%phi = phi i32 [ %a, %branch2 ], [ %b, %branch1 ]
+;; CHECK-NEXT:  %safepoint_token.1 = call i32 (i64, i32, i32 ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_i32f(i64 2882400000, i32 0, i32 ()* @foo, i32 0, i32 0, i32 0, i32 0)
+;; CHECK-NEXT:  %ret.2 = call i32 @llvm.experimental.gc.result.i32(i32 %safepoint_token.1)
+  %phi = phi i32 [ %a, %branch2 ], [ %b, %branch1 ]
+  %ret = call i32 @foo()
+  ret i32 %ret
+}
+
+; This function is inlined when inserting a poll.
+declare void @do_safepoint()
+define void @gc.safepoint_poll() {
+; CHECK-LABEL: gc.safepoint_poll
+entry:
+  call void @do_safepoint()
+  ret void
+}