1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2 ; RUN: opt -S -passes=loop-simplify,loop-fusion -debug-only=loop-fusion < %s 2>&1 | FileCheck %s
6 @A = common global [100 x i32] zeroinitializer, align 16
7 define void @sink_preheader(i32 %N) {
8 ; CHECK-LABEL: @sink_preheader(
10 ; CHECK-NEXT: [[PTR:%.*]] = alloca i32, align 4
11 ; CHECK-NEXT: br label [[BODY1:%.*]]
13 ; CHECK-NEXT: [[I:%.*]] = phi i32 [ [[I_NEXT:%.*]], [[BODY1]] ], [ 0, [[PRE1:%.*]] ]
14 ; CHECK-NEXT: [[I2:%.*]] = phi i32 [ [[I_NEXT2:%.*]], [[BODY1]] ], [ 0, [[PRE1]] ]
15 ; CHECK-NEXT: [[I_NEXT]] = add i32 1, [[I]]
16 ; CHECK-NEXT: [[COND:%.*]] = icmp ne i32 [[I]], [[N:%.*]]
17 ; CHECK-NEXT: store i32 3, ptr [[PTR]], align 4
18 ; CHECK-NEXT: [[I_NEXT2]] = add i32 1, [[I2]]
19 ; CHECK-NEXT: [[COND2:%.*]] = icmp ne i32 [[I2]], [[N]]
20 ; CHECK-NEXT: br i1 [[COND2]], label [[BODY1]], label [[EXIT:%.*]]
22 ; CHECK-NEXT: [[B:%.*]] = load i32, ptr [[PTR]], align 4
23 ; CHECK-NEXT: ret void
29 body1: ; preds = %pre1, %body1
30 %i = phi i32 [%i_next, %body1], [0, %pre1]
31 %i_next = add i32 1, %i
32 %cond = icmp ne i32 %i, %N
34 br i1 %cond, label %body1, label %pre2
37 %b = load i32, ptr %ptr
40 body2: ; preds = %pre2, %body2
41 %i2 = phi i32 [%i_next2, %body2], [0, %pre2]
42 %i_next2 = add i32 1, %i2
43 %cond2 = icmp ne i32 %i2, %N
44 br i1 %cond2, label %body2, label %exit