[RS4GC] Clamp UseDeoptBundles to true and update tests

The full diff for the test directory may be hard to read because of the
filename clash; so here's all that happened as far as the tests are
concerned:

```
cd test/Transforms/RewriteStatepointsForGC
git rm *ll
git mv deopt-bundles/* ./
rmdir deopt-bundles
find . -name '*.ll' | xargs gsed -i 's/-rs4gc-use-deopt-bundles //g'
```

llvm-svn: 259129
diff --git a/llvm/test/Transforms/RewriteStatepointsForGC/base-pointers-9.ll b/llvm/test/Transforms/RewriteStatepointsForGC/base-pointers-9.ll
index 946d89a..bf49f69 100644
--- a/llvm/test/Transforms/RewriteStatepointsForGC/base-pointers-9.ll
+++ b/llvm/test/Transforms/RewriteStatepointsForGC/base-pointers-9.ll
@@ -1,21 +1,20 @@
-; RUN: opt %s -rewrite-statepoints-for-gc -spp-print-base-pointers -S  2>&1 | FileCheck %s
+; RUN: opt < %s -rewrite-statepoints-for-gc -spp-print-base-pointers -S  2>&1 | FileCheck %s
 
 ; CHECK: derived %next base %base_obj
 
-declare i1 @runtime_value()
+declare i1 @runtime_value() "gc-leaf-function"
 
 define void @maybe_GEP(i64 addrspace(1)* %base_obj) gc "statepoint-example" {
 entry:
   br label %loop
 
-loop:
+loop:                                             ; preds = %loop, %entry
   %current = phi i64 addrspace(1)* [ %base_obj, %entry ], [ %next, %loop ]
   %condition = call i1 @runtime_value()
   %maybe_next = getelementptr i64, i64 addrspace(1)* %current, i32 1
   %next = select i1 %condition, i64 addrspace(1)* %maybe_next, i64 addrspace(1)* %current
-  %safepoint_token = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 0, i32 0, void ()* @do_safepoint, i32 0, i32 0, i32 0, i32 5, i32 0, i32 -1, i32 0, i32 0, i32 0)
+  call void @do_safepoint() [ "deopt"(i32 0, i32 -1, i32 0, i32 0, i32 0) ]
   br label %loop
 }
 
 declare void @do_safepoint()
-declare token @llvm.experimental.gc.statepoint.p0f_isVoidf(i64, i32, void ()*, i32, i32, ...)
\ No newline at end of file