Add a test case for the puts libcall optimization.

llvm-svn: 21616

1 files changed, 16 insertions, 0 deletions

diff --git a/llvm/test/Regression/Transforms/SimplifyLibCalls/Puts.ll b/llvm/test/Regression/Transforms/SimplifyLibCalls/Puts.ll
new file mode 100644
index 00000000000..3bbc70e45ad
--- /dev/null
+++ b/llvm/test/Regression/Transforms/SimplifyLibCalls/Puts.ll
@@ -0,0 +1,16 @@
+; Test that the StrCatOptimizer works correctly
+; RUN: llvm-as < %s | opt -simplify-libcalls | llvm-dis | not grep 'call.*fputc'
+%struct._IO_FILE = type { int, sbyte*, sbyte*, sbyte*, sbyte*, sbyte*, sbyte*, sbyte*, sbyte*, sbyte*, sbyte*, sbyte*, %struct._IO_marker*, %struct._IO_FILE*, int, int, int, ushort, sbyte, [1 x sbyte], sbyte*, long, sbyte*, sbyte*, int, [52 x sbyte] }
+%struct._IO_marker = type { %struct._IO_marker*, %struct._IO_FILE*, int }
+%stdout = external global %struct._IO_FILE*		; <%struct._IO_FILE**> [#uses=1]
+
+implementation   ; Functions:
+
+declare int %fputc(int, %struct._IO_FILE*)
+
+int %main() {
+entry:
+    %tmp.1 = load %struct._IO_FILE** %stdout		; <%struct._IO_FILE*> [#uses=1]
+    %tmp.0 = call int %fputc( int 61, %struct._IO_FILE* %tmp.1 )		; <int> [#uses=0]
+    ret int 0
+}