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diff --git a/test/CodeGen/ARM64/sincos.ll b/test/CodeGen/ARM64/sincos.ll
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+; RUN: llc < %s -mtriple=arm64-apple-ios7 | FileCheck %s
+
+; Combine sin / cos into a single call.
+; rdar://12856873
+
+define float @test1(float %x) nounwind {
+entry:
+; CHECK-LABEL: test1:
+; CHECK: bl ___sincosf_stret
+; CHECK: fadd s0, s0, s1
+ %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:
+; CHECK-LABEL: test2:
+; CHECK: bl ___sincos_stret
+; CHECK: fadd d0, d0, d1
+ %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