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/merge-ptr-and-int.ll b/llvm/test/Transforms/MergeFunc/merge-ptr-and-int.ll
index 7a178a2..4e887ce 100644
--- a/llvm/test/Transforms/MergeFunc/merge-ptr-and-int.ll
+++ b/llvm/test/Transforms/MergeFunc/merge-ptr-and-int.ll
@@ -1,18 +1,27 @@
; RUN: opt -S -mergefunc < %s | FileCheck %s
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
-; CHECK-LABEL: f0
+
+declare void @stuff()
+
+; CHECK-LABEL: @f0(
define void @f0(i64 %p0) {
entry:
+ call void @stuff()
+ call void @stuff()
+ call void @stuff()
ret void
}
-; CHECK-LABEL: f1
+; CHECK-LABEL: @f1(
; CHECK: ptrtoint i64*
; CHECK: tail call void @f0(i64
define void @f1(i64* %p0) {
entry:
+ call void @stuff()
+ call void @stuff()
+ call void @stuff()
ret void
}
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
+}
+