| ; Check that it doesn't crash by generating formula with zero in base register |
| ; when one of the IV factors does't fit (2^32 in this test) the formula type |
| ; see pr42770 |
| ; REQUIRES: asserts |
| ; RUN: opt < %s -loop-reduce -S | FileCheck %s |
| |
| target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128-ni:1" |
| |
| ; CHECK-LABEL: @foo( |
| define void @foo() { |
| bb: |
| br label %bb4 |
| ; CHECK: bb1: |
| ; CHECK: %tmp3 = ashr i64 %lsr.iv.next, 32 |
| bb1: ; preds = %bb13 |
| %tmp = shl i64 %tmp14, 32 |
| %tmp2 = add i64 %tmp, 1 |
| %tmp3 = ashr i64 %tmp2, 32 |
| ret void |
| ; CHECK bb4: |
| bb4: ; preds = %bb13, %bb |
| %tmp5 = phi i64 [ 2, %bb ], [ %tmp14, %bb13 ] |
| %tmp6 = add i64 %tmp5, 4 |
| %tmp7 = trunc i64 %tmp6 to i16 |
| %tmp8 = urem i16 %tmp7, 3 |
| %tmp9 = mul i16 %tmp8, 2 |
| %tmp10 = icmp eq i16 %tmp9, 1 |
| br i1 %tmp10, label %bb11, label %bb13 |
| |
| bb11: ; preds = %bb4 |
| %tmp12 = udiv i16 1, %tmp7 |
| unreachable |
| |
| bb13: ; preds = %bb4 |
| %tmp14 = add nuw nsw i64 %tmp5, 6 |
| br i1 undef, label %bb1, label %bb4 |
| } |
