diff --git a/llvm/test/Transforms/Coroutines/coro-materialize.ll b/llvm/test/Transforms/Coroutines/coro-materialize.ll
--- a/llvm/test/Transforms/Coroutines/coro-materialize.ll
+++ b/llvm/test/Transforms/Coroutines/coro-materialize.ll
@@ -1,6 +1,17 @@
 ; Verifies that we materialize instruction across suspend points
 ; RUN: opt < %s -passes='cgscc(coro-split),simplifycfg,early-cse' -S | FileCheck %s
 
+; See that we only spilled one value for f
+; CHECK: %f.Frame = type { ptr, ptr, i32, i1 }
+; Check other variants where different levels of materialization are achieved
+; CHECK: %f_multiple_remat.Frame = type { ptr, ptr, i32, i32, i32, i1 }
+; CHECK: %f_common_def.Frame = type { ptr, ptr, i32, i32, i32, i1 }
+; CHECK: %f_common_def_multi_result.Frame = type { ptr, ptr, i32, i32, i32, i32, i32, i32, i32, i1 }
+; CHECK-LABEL: @f(
+; CHECK-LABEL: @f_multiple_remat(
+; CHECK-LABEL: @f_common_def(
+; CHECK-LABEL: @f_common_def_multi_result(
+
 define ptr @f(i32 %n) presplitcoroutine {
 entry:
   %id = call token @llvm.coro.id(i32 0, ptr null, ptr null, ptr null)
@@ -32,9 +43,119 @@
   ret ptr %hdl
 }
 
-; See that we only spilled one value
-; CHECK: %f.Frame = type { ptr, ptr, i32, i1 }
-; CHECK-LABEL: @f(
+define ptr @f_multiple_remat(i32 %n) presplitcoroutine {
+entry:
+  %id = call token @llvm.coro.id(i32 0, ptr null, ptr null, ptr null)
+  %size = call i32 @llvm.coro.size.i32()
+  %alloc = call ptr @malloc(i32 %size)
+  %hdl = call ptr @llvm.coro.begin(token %id, ptr %alloc)
+
+  %inc1 = add i32 %n, 1
+  %inc2 = add i32 %inc1, 2
+  %inc3 = add i32 %inc2, 3
+  %inc4 = add i32 %inc3, 4
+  %inc5 = add i32 %inc4, 5
+  %inc6 = add i32 %inc5, 5
+  %sp1 = call i8 @llvm.coro.suspend(token none, i1 false)
+  switch i8 %sp1, label %suspend [i8 0, label %resume1
+                                  i8 1, label %cleanup]
+resume1:
+  %inc7 = add i32 %inc6, 1
+  %sp2 = call i8 @llvm.coro.suspend(token none, i1 false)
+  switch i8 %sp1, label %suspend [i8 0, label %resume2
+                                  i8 1, label %cleanup]
+
+resume2:
+  call void @print(i32 %inc1)
+  call void @print(i32 %inc7)
+  br label %cleanup
+
+cleanup:
+  %mem = call ptr @llvm.coro.free(token %id, ptr %hdl)
+  call void @free(ptr %mem)
+  br label %suspend
+suspend:
+  call i1 @llvm.coro.end(ptr %hdl, i1 0)
+  ret ptr %hdl
+}
+
+define ptr @f_common_def(i32 %n) presplitcoroutine {
+entry:
+  %id = call token @llvm.coro.id(i32 0, ptr null, ptr null, ptr null)
+  %size = call i32 @llvm.coro.size.i32()
+  %alloc = call ptr @malloc(i32 %size)
+  %hdl = call ptr @llvm.coro.begin(token %id, ptr %alloc)
+
+  %inc1 = add i32 %n, 1
+  %inc2 = add i32 %inc1, 2
+  %inc3 = add i32 %n, 3
+  %inc4 = add i32 %inc3, %inc1
+  %inc5 = add i32 %inc4, %inc1
+  %inc6 = add i32 %inc5, 5
+  %sp1 = call i8 @llvm.coro.suspend(token none, i1 false)
+  switch i8 %sp1, label %suspend [i8 0, label %resume1
+                                  i8 1, label %cleanup]
+resume1:
+  %inc7 = add i32 %inc6, 1
+  %sp2 = call i8 @llvm.coro.suspend(token none, i1 false)
+  switch i8 %sp1, label %suspend [i8 0, label %resume2
+                                  i8 1, label %cleanup]
+
+resume2:
+  call void @print(i32 %inc1)
+  call void @print(i32 %inc7)
+  br label %cleanup
+
+cleanup:
+  %mem = call ptr @llvm.coro.free(token %id, ptr %hdl)
+  call void @free(ptr %mem)
+  br label %suspend
+suspend:
+  call i1 @llvm.coro.end(ptr %hdl, i1 0)
+  ret ptr %hdl
+}
+
+define ptr @f_common_def_multi_result(i32 %n) presplitcoroutine {
+entry:
+  %id = call token @llvm.coro.id(i32 0, ptr null, ptr null, ptr null)
+  %size = call i32 @llvm.coro.size.i32()
+  %alloc = call ptr @malloc(i32 %size)
+  %hdl = call ptr @llvm.coro.begin(token %id, ptr %alloc)
+
+  %inc1 = add i32 %n, 1
+  %inc2 = add i32 %inc1, 2
+  %inc3 = add i32 %n, 3
+  %inc4 = add i32 %inc3, %inc1
+  %inc5 = add i32 %inc4, %inc1
+  %inc6 = add i32 %inc5, 4
+  %inc7 = add i32 %inc6, 5
+  %inc8 = add i32 %inc4, %inc2
+  %inc9 = add i32 %inc8, 5
+  %inc10 = add i32 %inc9, 6
+  %inc11 = add i32 %inc10, 7
+  %sp1 = call i8 @llvm.coro.suspend(token none, i1 false)
+  switch i8 %sp1, label %suspend [i8 0, label %resume1
+                                  i8 1, label %cleanup]
+resume1:
+  %inc12 = add i32 %inc7, 1
+  %sp2 = call i8 @llvm.coro.suspend(token none, i1 false)
+  switch i8 %sp1, label %suspend [i8 0, label %resume2
+                                  i8 1, label %cleanup]
+
+resume2:
+  call void @print(i32 %inc11)
+  call void @print(i32 %inc12)
+  br label %cleanup
+
+cleanup:
+  %mem = call ptr @llvm.coro.free(token %id, ptr %hdl)
+  call void @free(ptr %mem)
+  br label %suspend
+suspend:
+  call i1 @llvm.coro.end(ptr %hdl, i1 0)
+  ret ptr %hdl
+}
+
 
 declare ptr @llvm.coro.free(token, ptr)
 declare i32 @llvm.coro.size.i32()
diff --git a/llvm/test/Transforms/Coroutines/coro-retcon-remat.ll b/llvm/test/Transforms/Coroutines/coro-retcon-remat.ll
new file mode 100644
--- /dev/null
+++ b/llvm/test/Transforms/Coroutines/coro-retcon-remat.ll
@@ -0,0 +1,49 @@
+; Check that a remat that inserts rematerialized instructions in the single predecessor block works
+; as expected
+; RUN: opt < %s -O0 -S | FileCheck %s
+
+; CHECK: %f.Frame = type { i32, i32 }
+
+define { i8*, i32 } @f(i8* %buffer, i32 %n) {
+entry:
+  %id = call token @llvm.coro.id.retcon(i32 8, i32 4, i8* %buffer, i8* bitcast ({ i8*, i32 } (i8*, i1)* @f_prototype to i8*), i8* bitcast (i8* (i32)* @allocate to i8*), i8* bitcast (void (i8*)* @deallocate to i8*))
+  %hdl = call i8* @llvm.coro.begin(token %id, i8* null)
+  br label %loop
+
+loop:
+  %n.val = phi i32 [ %n, %entry ], [ %inc, %resume1 ]
+  call void @print(i32 %n.val)
+  %inc1 = add i32 %n.val, 1
+  %inc2 = add i32 %inc1, 2
+  %inc3 = add i32 %inc2, 3
+  %inc4 = add i32 %inc3, 4
+  %inc5 = add i32 %inc4, 5
+  %inc6 = add i32 %inc5, 6
+  %unwind0 = call i1 (...) @llvm.coro.suspend.retcon.i1(i32 %inc6)
+  br i1 %unwind0, label %cleanup, label %resume
+
+resume:
+  %unwind1 = call i1 (...) @llvm.coro.suspend.retcon.i1(i32 %inc6)
+  br i1 %unwind1, label %cleanup, label %resume1
+
+resume1:
+  %inc = add i32 %n.val, 1
+  br label %loop
+
+cleanup:
+  call i1 @llvm.coro.end(i8* %hdl, i1 0)
+  unreachable
+}
+
+declare token @llvm.coro.id.retcon(i32, i32, i8*, i8*, i8*, i8*)
+declare i8* @llvm.coro.begin(token, i8*)
+declare i1 @llvm.coro.suspend.retcon.i1(...)
+declare i1 @llvm.coro.end(i8*, i1)
+declare i8* @llvm.coro.prepare.retcon(i8*)
+
+declare { i8*, i32 } @f_prototype(i8*, i1 zeroext)
+
+declare noalias i8* @allocate(i32 %size)
+declare void @deallocate(i8* %ptr)
+
+declare void @print(i32)