+; Basic depth-3 chain with powi
+define double @test3(double %A1, double %A2, double %B1, double %B2, i32 %P) {
+
+ %X1 = fsub double %A1, %B1
+ %X2 = fsub double %A2, %B2
+ %Y1 = call double @llvm.powi.f64(double %X1, i32 %P)
+ %Y2 = call double @llvm.powi.f64(double %X2, i32 %P)
+ %Z1 = fadd double %Y1, %B1
+ %Z2 = fadd double %Y2, %B2
+ %R = fmul double %Z1, %Z2
+ ret double %R
+; CHECK: @test3
+; CHECK: %X1.v.i1.1 = insertelement <2 x double> undef, double %B1, i32 0
+; CHECK: %X1.v.i0.1 = insertelement <2 x double> undef, double %A1, i32 0
+; CHECK: %X1.v.i1.2 = insertelement <2 x double> %X1.v.i1.1, double %B2, i32 1
+; CHECK: %X1.v.i0.2 = insertelement <2 x double> %X1.v.i0.1, double %A2, i32 1
+; CHECK: %X1 = fsub <2 x double> %X1.v.i0.2, %X1.v.i1.2
+; CHECK: %Y1 = call <2 x double> @llvm.powi.v2f64(<2 x double> %X1, i32 %P)
+; CHECK: %Z1 = fadd <2 x double> %Y1, %X1.v.i1.2
+; CHECK: %Z1.v.r1 = extractelement <2 x double> %Z1, i32 0
+; CHECK: %Z1.v.r2 = extractelement <2 x double> %Z1, i32 1
+; CHECK: %R = fmul double %Z1.v.r1, %Z1.v.r2
+; CHECK: ret double %R
+}
+
+; Basic depth-3 chain with powi (different powers: should not vectorize)
+define double @test4(double %A1, double %A2, double %B1, double %B2, i32 %P) {
+
+ %X1 = fsub double %A1, %B1
+ %X2 = fsub double %A2, %B2
+ %P2 = add i32 %P, 1
+ %Y1 = call double @llvm.powi.f64(double %X1, i32 %P)
+ %Y2 = call double @llvm.powi.f64(double %X2, i32 %P2)
+ %Z1 = fadd double %Y1, %B1
+ %Z2 = fadd double %Y2, %B2
+ %R = fmul double %Z1, %Z2
+ ret double %R
+; CHECK: @test4
+; CHECK-NOT: <2 x double>
+; CHECK: ret double %R
+}
+