1 files changed, 65 insertions, 0 deletions
diff --git a/test/Transforms/RewriteStatepointsForGC/preprocess.ll b/test/Transforms/RewriteStatepointsForGC/preprocess.ll
new file mode 100644
index 0000000..29a7dcc
--- /dev/null
+++ b/test/Transforms/RewriteStatepointsForGC/preprocess.ll
@@ -0,0 +1,65 @@
+; RUN: opt -rewrite-statepoints-for-gc -S < %s | FileCheck %s
+
+declare void @consume(...)
+
+; Test to make sure we destroy LCSSA's single entry phi nodes before
+; running liveness
+define void @test6(i64 addrspace(1)* %obj) gc "statepoint-example" {
+; CHECK-LABEL: @test6
+entry:
+  br label %next
+
+next:
+; CHECK-LABEL: next:
+; CHECK-NEXT: gc.statepoint
+; CHECK-NEXT: gc.relocate
+; CHECK-NEXT: @consume(i64 addrspace(1)* %obj.relocated)
+; CHECK-NEXT: @consume(i64 addrspace(1)* %obj.relocated)
+  %obj2 = phi i64 addrspace(1)* [ %obj, %entry ]
+  call i32 (void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(void ()* @foo, i32 0, i32 0, i32 0)
+  call void (...) @consume(i64 addrspace(1)* %obj2)
+  call void (...) @consume(i64 addrspace(1)* %obj)
+  ret void
+}
+
+declare void @some_call(i64 addrspace(1)*)
+
+; Need to delete unreachable gc.statepoint call
+define void @test7() gc "statepoint-example" {
+; CHECK-LABEL: test7
+; CHECK-NOT: gc.statepoint
+  ret void
+
+unreached:
+  %obj = phi i64 addrspace(1)* [null, %unreached]
+  call i32 (void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(void ()* @foo, i32 0, i32 0, i32 0)
+  call void (...) @consume(i64 addrspace(1)* %obj)
+  br label %unreached
+}
+
+; Need to delete unreachable gc.statepoint invoke - tested seperately given
+; a correct implementation could only remove the instructions, not the block
+define void @test8() gc "statepoint-example" {
+; CHECK-LABEL: test8
+; CHECK-NOT: gc.statepoint
+  ret void
+
+unreached:
+  invoke i32 (void ()*, i32, i32, ...)* @llvm.experimental.gc.statepoint.p0f_isVoidf(void ()* @foo, i32 0, i32 0, i32 0)
+          to label %normal_return unwind label %exceptional_return
+
+normal_return:                                    ; preds = %entry
+  ret void
+
+exceptional_return:                               ; preds = %entry
+  %landing_pad4 = landingpad { i8*, i32 } personality i32 ()* undef
+          cleanup
+  ret void
+}
+
+declare void @foo()
+; Bound the last check-not
+; CHECK-LABEL: @foo
+
+declare i32 @llvm.experimental.gc.statepoint.p0f_isVoidf(void ()*, i32, i32, ...)
+