--- /dev/null
+; RUN: opt -S -mergefunc < %s | FileCheck %s
+
+target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-unknown-linux-gnu"
+
+define i32 @_Z1fi(i32 %i) #0 {
+entry:
+ %retval = alloca i32, align 4
+ %i.addr = alloca i32, align 4
+ store i32 %i, i32* %i.addr, align 4
+ %0 = load i32, i32* %i.addr, align 4
+ %cmp = icmp eq i32 %0, 1
+ br i1 %cmp, label %if.then, label %if.end
+
+if.then:
+ store i32 3, i32* %retval
+ br label %return
+
+if.end:
+ %1 = load i32, i32* %i.addr, align 4
+ %cmp1 = icmp eq i32 %1, 3
+ br i1 %cmp1, label %if.then.2, label %if.end.3
+
+if.then.2:
+ store i32 56, i32* %retval
+ br label %return
+
+if.end.3:
+ store i32 0, i32* %retval
+ br label %return
+
+return:
+ %2 = load i32, i32* %retval
+ ret i32 %2
+}
+
+
+define internal i8* @Afunc(i32* %P) {
+ store i32 1, i32* %P
+ store i32 3, i32* %P
+ ret i8* blockaddress(@_Z1fi, %if.then.2)
+}
+
+define internal i8* @Bfunc(i32* %P) {
+; CHECK-NOT: @Bfunc
+ store i32 1, i32* %P
+ store i32 3, i32* %P
+ ret i8* blockaddress(@_Z1fi, %if.then.2)
+}