--- /dev/null
+; RUN: llc < %s -mtriple=x86_64-apple-macosx10.9.0 -mcpu=core2 | FileCheck %s --check-prefix=SINCOS
+; RUN: llc < %s -mtriple=x86_64-apple-macosx10.8.0 -mcpu=core2 | FileCheck %s --check-prefix=NOOPT
+
+; Combine sin / cos into a single call.
+; rdar://13087969
+
+define float @test1(float %x) nounwind {
+entry:
+; SINCOS: test1:
+; SINCOS: callq ___sincosf_stret
+; SINCOS: addss %xmm1, %xmm0
+
+; NOOPT: test1
+; NOOPT: callq _cosf
+; NOOPT: callq _sinf
+ %call = tail call float @sinf(float %x) nounwind readnone
+ %call1 = tail call float @cosf(float %x) nounwind readnone
+ %add = fadd float %call, %call1
+ ret float %add
+}
+
+define double @test2(double %x) nounwind {
+entry:
+; SINCOS: test2:
+; SINCOS: callq ___sincos_stret
+; SINCOS: addsd %xmm1, %xmm0
+
+; NOOPT: test2
+; NOOPT: callq _cos
+; NOOPT: callq _sin
+ %call = tail call double @sin(double %x) nounwind readnone
+ %call1 = tail call double @cos(double %x) nounwind readnone
+ %add = fadd double %call, %call1
+ ret double %add
+}
+
+declare float @sinf(float) readonly
+declare double @sin(double) readonly
+declare float @cosf(float) readonly
+declare double @cos(double) readonly