Vendor import of llvm trunk r126079:

http://llvm.org/svn/llvm-project/llvm/trunk@126079

1 files changed, 41 insertions, 0 deletions

diff --git a/test/Transforms/SimplifyLibCalls/StrSpn.ll b/test/Transforms/SimplifyLibCalls/StrSpn.ll
new file mode 100644
index 0000000..800c190
--- /dev/null
+++ b/test/Transforms/SimplifyLibCalls/StrSpn.ll
@@ -0,0 +1,41 @@
+; RUN: opt < %s -simplify-libcalls -S | FileCheck %s
+
+target datalayout = "-p:64:64:64"
+
+@abcba = constant [6 x i8] c"abcba\00"
+@abc = constant [4 x i8] c"abc\00"
+@null = constant [1 x i8] zeroinitializer
+
+declare i64 @strspn(i8*, i8*)
+
+define i64 @testspn(i8* %s1, i8* %s2) {
+  	%abcba_p = getelementptr [6 x i8]* @abcba, i32 0, i32 0
+	%abc_p = getelementptr [4 x i8]* @abc, i32 0, i32 0
+	%null_p = getelementptr [1 x i8]* @null, i32 0, i32 0
+	%test1 = call i64 @strspn(i8* %s1, i8* %null_p)
+	%test2 = call i64 @strspn(i8* %null_p, i8* %s2)
+	%test3 = call i64 @strspn(i8* %abcba_p, i8* %abc_p)
+; CHECK-NOT: call i64 @strspn
+	%test4 = call i64 @strspn(i8* %s1, i8* %s2)
+; CHECK: call i64 @strspn(i8* %s1, i8* %s2)
+	ret i64 %test3
+; CHECK: ret i64 5
+}
+
+declare i64 @strcspn(i8*, i8*)
+
+define i64 @testcspn(i8* %s1, i8* %s2) {
+  	%abcba_p = getelementptr [6 x i8]* @abcba, i32 0, i32 0
+	%abc_p = getelementptr [4 x i8]* @abc, i32 0, i32 0
+	%null_p = getelementptr [1 x i8]* @null, i32 0, i32 0
+	%test1 = call i64 @strcspn(i8* %s1, i8* %null_p)
+; CHECK: call i64 @strlen(i8* %s1)
+	%test2 = call i64 @strcspn(i8* %null_p, i8* %s2)
+	%test3 = call i64 @strcspn(i8* %abcba_p, i8* %abc_p)
+; CHECK-NOT: call i64 @strcspn
+	%test4 = call i64 @strcspn(i8* %s1, i8* %s2)
+; CHECK: call i64 @strcspn(i8* %s1, i8* %s2)
+        %add0 = add i64 %test1, %test3
+; CHECK: add i64 %{{.+}}, 0
+	ret i64 %add0
+}