1 ; RUN: opt -S -passes=loop-simplify,loop-fusion -debug-only=loop-fusion < %s 2>&1 | FileCheck %s
3 ; CHECK: Could not hoist/sink all instructions
5 define void @sink_preheader(i32 %N) {
7 ; CHECK-NEXT: %ptr = alloca i32
8 ; CHECK-NEXT: br label %body1
14 ; CHECK-NOT: store atomic i32 3, ptr %ptr seq_cst, align 4
15 body1: ; preds = %pre1, %body1
16 %i = phi i32 [%i_next, %body1], [0, %pre1]
17 %i_next = add i32 1, %i
18 %cond = icmp ne i32 %i, %N
19 br i1 %cond, label %body1, label %pre2
22 ; CHECK-NEXT: store atomic i32 3, ptr %ptr seq_cst, align 4
24 store atomic i32 3, ptr %ptr seq_cst, align 4
28 ; CHECK-NOT: store atomic i32 3, ptr %ptr seq_cst, align 4
29 body2: ; preds = %pre2, %body2
30 %i2 = phi i32 [%i_next2, %body2], [0, %pre2]
31 %i_next2 = add i32 1, %i2
32 %cond2 = icmp ne i32 %i2, %N
33 br i1 %cond2, label %body2, label %exit