target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128"
; RUN: opt < %s -mtriple=x86_64-unknown-linux-gnu -mcpu=corei7 -bb-vectorize -bb-vectorize-req-chain-depth=3 -instcombine -gvn -S | FileCheck %s

declare double @llvm.fma.f64(double, double, double)
declare double @llvm.fmuladd.f64(double, double, double)
declare double @llvm.cos.f64(double)
declare double @llvm.powi.f64(double, i32)

; Basic depth-3 chain with fma
define double @test1(double %A1, double %A2, double %B1, double %B2, double %C1, double %C2) {
	%X1 = fsub double %A1, %B1
	%X2 = fsub double %A2, %B2
	%Y1 = call double @llvm.fma.f64(double %X1, double %A1, double %C1)
	%Y2 = call double @llvm.fma.f64(double %X2, double %A2, double %C2)
	%Z1 = fadd double %Y1, %B1
	%Z2 = fadd double %Y2, %B2
	%R  = fmul double %Z1, %Z2
	ret double %R
; CHECK-LABEL: @test1(
; CHECK: ret double %R
}

; Basic depth-3 chain with fmuladd
define double @test1a(double %A1, double %A2, double %B1, double %B2, double %C1, double %C2) {
	%X1 = fsub double %A1, %B1
	%X2 = fsub double %A2, %B2
	%Y1 = call double @llvm.fmuladd.f64(double %X1, double %A1, double %C1)
	%Y2 = call double @llvm.fmuladd.f64(double %X2, double %A2, double %C2)
	%Z1 = fadd double %Y1, %B1
	%Z2 = fadd double %Y2, %B2
	%R  = fmul double %Z1, %Z2
	ret double %R
; CHECK-LABEL: @test1a(
; CHECK: ret double %R
}

; Basic depth-3 chain with cos
define double @test2(double %A1, double %A2, double %B1, double %B2) {
	%X1 = fsub double %A1, %B1
	%X2 = fsub double %A2, %B2
	%Y1 = call double @llvm.cos.f64(double %X1)
	%Y2 = call double @llvm.cos.f64(double %X2)
	%Z1 = fadd double %Y1, %B1
	%Z2 = fadd double %Y2, %B2
	%R  = fmul double %Z1, %Z2
	ret double %R
; CHECK-LABEL: @test2(
; CHECK: ret double %R
}

; 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-LABEL: @test3(
; 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-LABEL: @test4(
; CHECK: ret double %R
}

