1 files changed, 25 insertions, 0 deletions
diff --git a/test/Transforms/SimplifyLibCalls/StrCat.ll b/test/Transforms/SimplifyLibCalls/StrCat.ll
new file mode 100644
index 0000000..06bc833
--- /dev/null
+++ b/test/Transforms/SimplifyLibCalls/StrCat.ll
@@ -0,0 +1,25 @@
+; Test that the StrCatOptimizer works correctly
+; RUN: llvm-upgrade < %s | llvm-as | opt -simplify-libcalls | llvm-dis | \
+; RUN:   not grep {call.*strcat}
+
+declare sbyte* %strcat(sbyte*,sbyte*)
+declare int %puts(sbyte*)
+%hello = constant [6 x sbyte] c"hello\00"
+%null = constant [1 x sbyte] c"\00"
+%null_hello = constant [7 x sbyte] c"\00hello\00"
+
+implementation   ; Functions:
+
+int %main () {
+  %target = alloca [1024 x sbyte]
+  %arg1 = getelementptr [1024 x sbyte]* %target, int 0, int 0
+  store sbyte 0, sbyte* %arg1
+  %arg2 = getelementptr [6 x sbyte]* %hello, int 0, int 0
+  %rslt1 = call sbyte* %strcat(sbyte* %arg1, sbyte* %arg2)
+  %arg3 = getelementptr [1 x sbyte]* %null, int 0, int 0
+  %rslt2 = call sbyte* %strcat(sbyte* %rslt1, sbyte* %arg3)
+  %arg4 = getelementptr [7 x sbyte]* %null_hello, int 0, int 0
+  %rslt3 = call sbyte* %strcat(sbyte* %rslt2, sbyte* %arg4)
+  call int %puts(sbyte* %rslt3)
+  ret int 0
+}