Don't merge tiny functions.
It's silly to merge functions like these:
define void @foo(i32 %x) {
ret void
}
define void @bar(i32 %x) {
ret void
}
to get
define void @bar(i32) {
tail call void @foo(i32 %0)
ret void
}
llvm-svn: 191786
diff --git a/llvm/test/Transforms/MergeFunc/too-small.ll b/llvm/test/Transforms/MergeFunc/too-small.ll
new file mode 100644
index 0000000..1a526ff
--- /dev/null
+++ b/llvm/test/Transforms/MergeFunc/too-small.ll
@@ -0,0 +1,14 @@
+; RUN: opt -S -mergefunc < %s | FileCheck %s
+
+define void @foo(i32 %x) {
+; CHECK-LABEL: @foo(
+; CHECK-NOT: call
+ ret void
+}
+
+define void @bar(i32 %x) {
+; CHECK-LABEL: @bar(
+; CHECK-NOT: call
+ ret void
+}
+