1 files changed, 24 insertions, 0 deletions
diff --git a/test/Transforms/InstCombine/tan.ll b/test/Transforms/InstCombine/tan.ll
new file mode 100644
index 000000000000..15a832f253a9
--- /dev/null
+++ b/test/Transforms/InstCombine/tan.ll
@@ -0,0 +1,24 @@
+; RUN: opt < %s -instcombine -S | FileCheck %s
+
+define float @mytan(float %x) #0 {
+entry:
+  %call = call float @atanf(float %x)
+  %call1 = call float @tanf(float %call)
+  ret float %call1
+}
+
+; CHECK-LABEL: define float @mytan(
+; CHECK:   ret float %x
+
+define float @test2(float ()* %fptr) #0 {
+  %call1 = call float %fptr()
+  %tan = call float @tanf(float %call1)
+  ret float %tan
+}
+
+; CHECK-LABEL: @test2
+; CHECK: tanf
+
+declare float @tanf(float) #0
+declare float @atanf(float) #0
+attributes #0 = { "unsafe-fp-math"="true" }