2 files changed, 69 insertions, 0 deletions
diff --git a/test/Transforms/MergeFunc/inline-asm.ll b/test/Transforms/MergeFunc/inline-asm.ll
new file mode 100644
index 0000000000000..370d3c56f060e
--- /dev/null
+++ b/test/Transforms/MergeFunc/inline-asm.ll
@@ -0,0 +1,53 @@
+; RUN: opt -mergefunc -S < %s | FileCheck %s
+
+; CHECK-LABEL: @int_ptr_arg_different
+; CHECK-NEXT: call void asm
+
+; CHECK-LABEL: @int_ptr_arg_same
+; CHECK-NEXT: %2 = bitcast i32* %0 to float*
+; CHECK-NEXT: tail call void @float_ptr_arg_same(float* %2)
+
+; CHECK-LABEL: @int_ptr_null
+; CHECK-NEXT: tail call void @float_ptr_null()
+
+; Used to satisfy minimum size limit
+declare void @stuff()
+
+; Can be merged
+define void @float_ptr_null() {
+  call void asm "nop", "r"(float* null)
+  call void @stuff()
+  ret void
+}
+
+define void @int_ptr_null() {
+  call void asm "nop", "r"(i32* null)
+  call void @stuff()
+  ret void
+}
+
+; Can be merged (uses same argument differing by pointer type)
+define void @float_ptr_arg_same(float*) {
+  call void asm "nop", "r"(float* %0)
+  call void @stuff()
+  ret void
+}
+
+define void @int_ptr_arg_same(i32*) {
+  call void asm "nop", "r"(i32* %0)
+  call void @stuff()
+  ret void
+}
+
+; Can not be merged (uses different arguments)
+define void @float_ptr_arg_different(float*, float*) {
+  call void asm "nop", "r"(float* %0)
+  call void @stuff()
+  ret void
+}
+
+define void @int_ptr_arg_different(i32*, i32*) {
+  call void asm "nop", "r"(i32* %1)
+  call void @stuff()
+  ret void
+}
diff --git a/test/Transforms/MergeFunc/weak-small.ll b/test/Transforms/MergeFunc/weak-small.ll
new file mode 100644
index 0000000000000..64f1083174623
--- /dev/null
+++ b/test/Transforms/MergeFunc/weak-small.ll
@@ -0,0 +1,16 @@
+; RUN: opt -mergefunc -S < %s | FileCheck %s
+
+; Weak functions too small for merging to be profitable
+
+; CHECK: define weak i32 @foo(i8*, i32)
+; CHECK-NEXT: ret i32 %1
+; CHECK: define weak i32 @bar(i8*, i32)
+; CHECK-NEXT: ret i32 %1
+
+define weak i32 @foo(i8*, i32) #0 {
+    ret i32 %1
+}
+
+define weak i32 @bar(i8*, i32) #0 {
+    ret i32 %1
+}