1 files changed, 25 insertions, 1 deletions
diff --git a/test/Transforms/TailCallElim/inf-recursion.ll b/test/Transforms/TailCallElim/inf-recursion.ll
index a5f246d36c..e4ac9283ae 100644
--- a/test/Transforms/TailCallElim/inf-recursion.ll
+++ b/test/Transforms/TailCallElim/inf-recursion.ll
@@ -1,6 +1,10 @@
-; RUN: opt < %s -tailcallelim -S | grep call
+; RUN: opt < %s -tailcallelim -S | FileCheck %s
+
 ; Don't turn this into an infinite loop, this is probably the implementation
 ; of fabs and we expect the codegen to lower fabs.
+; CHECK: @fabs(double %f)
+; CHECK: call
+; CHECK: ret
 
 define double @fabs(double %f) {
 entry:
@@ -8,3 +12,23 @@ entry:
         ret double %tmp2
 }
 
+; Do turn other calls into infinite loops though.
+
+; CHECK: define double @foo
+; CHECK-NOT: call
+; CHECK: }
+define double @foo(double %f) {
+        %t= call double @foo(double %f)
+        ret double %t
+}
+
+; CHECK: define float @fabsf
+; CHECK-NOT: call
+; CHECK: }
+define float @fabsf(float %f) {
+        %t= call float @fabsf(float 2.0)
+        ret float %t
+}
+
+declare float @fabsf(float %f)
+declare x86_fp80 @fabsl(x86_fp80 %f)