From cee313d288a4faf0355d76fb6e0e927e211d08a5 Mon Sep 17 00:00:00 2001
From: Eric Christopher <echristo@gmail.com>
Date: Wed, 17 Apr 2019 04:52:47 +0000
Subject: Revert "Temporarily Revert "Add basic loop fusion pass.""

The reversion apparently deleted the test/Transforms directory.

Will be re-reverting again.

llvm-svn: 358552
---
 .../RewriteStatepointsForGC/leaf-function.ll       | 34 ++++++++++++++++++++++
 1 file changed, 34 insertions(+)
 create mode 100644 llvm/test/Transforms/RewriteStatepointsForGC/leaf-function.ll

(limited to 'llvm/test/Transforms/RewriteStatepointsForGC/leaf-function.ll')

diff --git a/llvm/test/Transforms/RewriteStatepointsForGC/leaf-function.ll b/llvm/test/Transforms/RewriteStatepointsForGC/leaf-function.ll
new file mode 100644
index 00000000000..5de85153e71
--- /dev/null
+++ b/llvm/test/Transforms/RewriteStatepointsForGC/leaf-function.ll
@@ -0,0 +1,34 @@
+; RUN: opt < %s -S -rewrite-statepoints-for-gc | FileCheck %s
+; RUN: opt < %s -S -passes=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
+}
-- 
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