vendor/llvm/llvm-release_39-r276489

1 files changed, 33 insertions, 0 deletions

diff --git a/test/Transforms/RewriteStatepointsForGC/leaf-function.ll b/test/Transforms/RewriteStatepointsForGC/leaf-function.ll
new file mode 100644
index 0000000000000..e2350d4f9e0a2
--- /dev/null
+++ b/test/Transforms/RewriteStatepointsForGC/leaf-function.ll
@@ -0,0 +1,33 @@
+; RUN: opt < %s -S -rewrite-statepoints-for-gc | FileCheck %s
+
+declare void @foo() "gc-leaf-function"
+declare void @bar()
+
+; Calls of functions with the "gc-leaf-function" attribute shouldn't be turned
+; into a safepoint.  An entry safepoint should get inserted, though.
+define void @test_leaf_function() gc "statepoint-example" {
+; CHECK-LABEL: test_leaf_function
+; CHECK-NOT: gc.statepoint
+; CHECK-NOT: gc.result
+entry:
+  call void @foo()
+  ret void
+}
+
+define void @test_leaf_function_call() gc "statepoint-example" {
+; CHECK-LABEL: test_leaf_function_call
+; CHECK-NOT: gc.statepoint
+; CHECK-NOT: gc.result
+entry:
+  call void @bar() "gc-leaf-function"
+  ret void
+}
+
+; 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
+}