; RUN: llc -march=hexagon < %s | FileCheck %s
; Check that 3 or more addressing modes using the same constant extender are
; transformed into using a register.
; CHECK: r{{[0-9]+}} = ##g1
; CHECK: r{{[0-9]+}} = memw(r{{[0-9]+}}+r{{[0-9]+}}<<#2)
; CHECK: r{{[0-9]+}} = memw(r{{[0-9]+}}+r{{[0-9]+}}<<#2)
; CHECK: r{{[0-9]+}} = memw(r{{[0-9]+}}+r{{[0-9]+}}<<#2)
; CHECK-NOT: r{{[0-9]+}} = memw(r{{[0-9]+}}<<#2+##g1)
; CHECK-NOT: r{{[0-9]+}} = memw(r{{[0-9]+}}<<#2+##g1)
; CHECK-NOT: r{{[0-9]+}} = memw(r{{[0-9]+}}<<#2+##g1)
; CHECK: memw(r{{[0-9]+}}+r{{[0-9]+}}<<#2) = r{{[0-9]+}}
; CHECK: memw(r{{[0-9]+}}+r{{[0-9]+}}<<#2) = r{{[0-9]+}}
; CHECK: memw(r{{[0-9]+}}+r{{[0-9]+}}<<#2) = r{{[0-9]+}}
; CHECK-NOT: memw(r{{[0-9]+}}<<#2+##g1) = r{{[0-9]+}}
; CHECK-NOT: memw(r{{[0-9]+}}<<#2+##g1) = r{{[0-9]+}}
; CHECK-NOT: memw(r{{[0-9]+}}<<#2+##g1) = r{{[0-9]+}}
target triple = "hexagon-unknown-linux-gnu"
@g0 = external global i32
@g1 = external global [13595 x i32], align 8
@g2 = external global [13595 x i32], align 8
define i32 @f0(i32 %a0, i32* nocapture %a1) {
b0:
%v0 = load i32, i32* %a1, align 4
%v1 = getelementptr inbounds [13595 x i32], [13595 x i32]* @g1, i32 0, i32 %v0
%v2 = load i32, i32* %v1, align 4
%v3 = icmp sgt i32 %v2, %a0
br i1 %v3, label %b1, label %b2
b1: ; preds = %b0
%v4 = load i32, i32* @g0, align 4
store i32 %v4, i32* %a1, align 4
%v5 = load i32, i32* @g0, align 4
%v6 = getelementptr inbounds [13595 x i32], [13595 x i32]* @g2, i32 0, i32 %v5
%v7 = load i32, i32* %v6, align 4
store i32 %v7, i32* @g0, align 4
%v8 = load i32, i32* %a1, align 4
%v9 = getelementptr inbounds [13595 x i32], [13595 x i32]* @g2, i32 0, i32 %v8
store i32 %v0, i32* %v9, align 4
%v10 = load i32, i32* %a1, align 4
%v11 = getelementptr inbounds [13595 x i32], [13595 x i32]* @g1, i32 0, i32 %v10
store i32 %a0, i32* %v11, align 4
br label %b16
b2: ; preds = %b0
%v12 = icmp eq i32 %v2, %a0
br i1 %v12, label %b16, label %b3
b3: ; preds = %b2
br label %b4
b4: ; preds = %b13, %b3
%v13 = phi i32 [ %v45, %b13 ], [ %v0, %b3 ]
%v14 = getelementptr inbounds [13595 x i32], [13595 x i32]* @g2, i32 0, i32 %v13
%v15 = load i32, i32* %v14, align 4
%v16 = getelementptr inbounds [13595 x i32], [13595 x i32]* @g1, i32 0, i32 %v15
%v17 = load i32, i32* %v16, align 4
%v18 = icmp slt i32 %v17, %a0
br i1 %v18, label %b7, label %b5
b5: ; preds = %b4
%v19 = icmp eq i32 %v17, %a0
br i1 %v19, label %b16, label %b6
b6: ; preds = %b5
%v20 = load i32, i32* @g0, align 4
store i32 %v20, i32* %v14, align 4
%v21 = getelementptr inbounds [13595 x i32], [13595 x i32]* @g1, i32 0, i32 %v20
store i32 %a0, i32* %v21, align 4
%v22 = getelementptr inbounds [13595 x i32], [13595 x i32]* @g2, i32 0, i32 %v20
%v23 = load i32, i32* %v22, align 4
store i32 %v23, i32* @g0, align 4
store i32 %v15, i32* %v22, align 4
br label %b16
b7: ; preds = %b4
%v24 = getelementptr inbounds [13595 x i32], [13595 x i32]* @g2, i32 0, i32 %v15
%v25 = load i32, i32* %v24, align 4
%v26 = getelementptr inbounds [13595 x i32], [13595 x i32]* @g1, i32 0, i32 %v25
%v27 = load i32, i32* %v26, align 4
%v28 = icmp slt i32 %v27, %a0
br i1 %v28, label %b10, label %b8
b8: ; preds = %b7
%v29 = icmp eq i32 %v27, %a0
br i1 %v29, label %b16, label %b9
b9: ; preds = %b8
%v30 = load i32, i32* @g0, align 4
store i32 %v30, i32* %v24, align 4
%v31 = getelementptr inbounds [13595 x i32], [13595 x i32]* @g1, i32 0, i32 %v30
store i32 %a0, i32* %v31, align 4
%v32 = getelementptr inbounds [13595 x i32], [13595 x i32]* @g2, i32 0, i32 %v30
%v33 = load i32, i32* %v32, align 4
store i32 %v33, i32* @g0, align 4
store i32 %v25, i32* %v32, align 4
br label %b16
b10: ; preds = %b7
%v34 = getelementptr inbounds [13595 x i32], [13595 x i32]* @g2, i32 0, i32 %v25
%v35 = load i32, i32* %v34, align 4
%v36 = getelementptr inbounds [13595 x i32], [13595 x i32]* @g1, i32 0, i32 %v35
%v37 = load i32, i32* %v36, align 4
%v38 = icmp slt i32 %v37, %a0
br i1 %v38, label %b13, label %b11
b11: ; preds = %b10
%v39 = icmp eq i32 %v37, %a0
br i1 %v39, label %b16, label %b12
b12: ; preds = %b11
%v40 = load i32, i32* @g0, align 4
store i32 %v40, i32* %v34, align 4
%v41 = getelementptr inbounds [13595 x i32], [13595 x i32]* @g1, i32 0, i32 %v40
store i32 %a0, i32* %v41, align 4
%v42 = getelementptr inbounds [13595 x i32], [13595 x i32]* @g2, i32 0, i32 %v40
%v43 = load i32, i32* %v42, align 4
store i32 %v43, i32* @g0, align 4
store i32 %v35, i32* %v42, align 4
br label %b16
b13: ; preds = %b10
%v44 = getelementptr inbounds [13595 x i32], [13595 x i32]* @g2, i32 0, i32 %v35
%v45 = load i32, i32* %v44, align 4
%v46 = getelementptr inbounds [13595 x i32], [13595 x i32]* @g1, i32 0, i32 %v45
%v47 = load i32, i32* %v46, align 4
%v48 = icmp slt i32 %v47, %a0
br i1 %v48, label %b4, label %b14
b14: ; preds = %b13
%v49 = icmp eq i32 %v47, %a0
br i1 %v49, label %b16, label %b15
b15: ; preds = %b14
%v50 = load i32, i32* @g0, align 4
store i32 %v50, i32* %v44, align 4
%v51 = getelementptr inbounds [13595 x i32], [13595 x i32]* @g1, i32 0, i32 %v50
store i32 %a0, i32* %v51, align 4
%v52 = getelementptr inbounds [13595 x i32], [13595 x i32]* @g2, i32 0, i32 %v50
%v53 = load i32, i32* %v52, align 4
store i32 %v53, i32* @g0, align 4
store i32 %v45, i32* %v52, align 4
br label %b16
b16: ; preds = %b15, %b14, %b12, %b11, %b9, %b8, %b6, %b5, %b2, %b1
%v54 = phi i32 [ 1, %b1 ], [ 1, %b6 ], [ 1, %b9 ], [ 1, %b12 ], [ 1, %b15 ], [ 0, %b2 ], [ 0, %b5 ], [ 0, %b8 ], [ 0, %b11 ], [ 0, %b14 ]
ret i32 %v54
}