Add a test case for StrChrOptimizer for -simplify-libcalls

llvm-svn: 21668

1 files changed, 19 insertions, 0 deletions

diff --git a/llvm/test/Regression/Transforms/SimplifyLibCalls/StrChr.ll b/llvm/test/Regression/Transforms/SimplifyLibCalls/StrChr.ll
new file mode 100644
index 00000000000..7594fee4b16
--- /dev/null
+++ b/llvm/test/Regression/Transforms/SimplifyLibCalls/StrChr.ll
@@ -0,0 +1,19 @@
+; Test that the StrChrOptimizer works correctly
+; RUN: llvm-as < %s | opt -simplify-libcalls | llvm-dis | not grep 'call.*strchr'
+
+declare sbyte* %strchr(sbyte*,int)
+declare int %puts(sbyte*)
+%hello = constant [14 x sbyte] c"hello world\n\00"
+%null = constant [1 x sbyte] c"\00"
+
+implementation   ; Functions:
+
+int %main () {
+  %hello_p = getelementptr [14 x sbyte]* %hello, int 0, int 0
+  %null_p = getelementptr [1 x sbyte]* %null, int 0, int 0
+
+  %world  = call sbyte* %strchr(sbyte* %hello_p, int 119 )
+  %ignore = call sbyte* %strchr(sbyte* %null_p, int 119 )
+  %result = call int %puts(sbyte* %world)
+  ret int %result
+}