| ; RUN: opt -passes 'loop-reduce' -scalar-evolution-max-arith-depth=2 -S < %s | FileCheck %s |
| ; RUN: opt -loop-reduce -scalar-evolution-max-arith-depth=2 -S < %s | FileCheck %s |
| |
| ; This test should just compile cleanly without assertions. |
| |
| target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128-ni:1-p2:32:8:8:32-ni:2" |
| |
| define void @test(i32 %A, i32 %B, i32 %C) { |
| ; CHECK-LABEL: @test( |
| ; CHECK: inner_loop: |
| ; CHECK-NEXT: [[LSR_IV3:%.*]] = phi i32 |
| ; CHECK-NEXT: [[LSR_IV1:%.*]] = phi i32 |
| ; CHECK-NEXT: [[LSR_IV:%.*]] = phi i32 |
| ; CHECK: [[LSR_IV_NEXT:%.*]] = add i32 [[LSR_IV]], 3 |
| ; CHECK-NEXT: [[LSR_IV_NEXT2:%.*]] = add i32 [[LSR_IV1]], 3 |
| ; CHECK-NEXT: [[LSR_IV_NEXT4:%.*]] = add i32 [[LSR_IV3]], -3 |
| ; |
| entry: |
| br label %outer_loop |
| |
| outer_loop: |
| %phi2 = phi i32 [ %A, %entry ], [ 204, %outer_tail ] |
| %phi3 = phi i32 [ %A, %entry ], [ 243, %outer_tail ] |
| %phi4 = phi i32 [ %B, %entry ], [ %i35, %outer_tail ] |
| br label %guard |
| |
| guard: |
| %lcmp.mod = icmp eq i32 %C, 0 |
| br i1 %lcmp.mod, label %outer_tail, label %preheader |
| |
| preheader: |
| %i15 = shl i32 %B, 1 |
| br label %inner_loop |
| |
| inner_loop: |
| %phi5 = phi i32 [ %phi3, %preheader ], [ %i30, %inner_loop ] |
| %phi6 = phi i32 [ %phi2, %preheader ], [ %i33, %inner_loop ] |
| %iter = phi i32 [ %C, %preheader ], [ %iter.sub, %inner_loop ] |
| %i17 = sub i32 %phi4, %phi6 |
| %i18 = sub i32 14, %phi5 |
| %i19 = mul i32 %i18, %C |
| %factor.prol = shl i32 %phi5, 1 |
| %i20 = add i32 %i17, %factor.prol |
| %i21 = add i32 %i20, %B |
| %i22 = add i32 %i21, %i19 |
| %i23 = sub i32 14, %i22 |
| %i24 = mul i32 %i23, %C |
| %factor.1.prol = shl i32 %i22, 1 |
| %i25 = add i32 %i17, %factor.1.prol |
| %i27 = add i32 %i25, %i24 |
| %i29 = mul i32 %i25, %C |
| %factor.2.prol = shl i32 %i27, 1 |
| %i30 = add i32 %i17, %factor.2.prol |
| %i33 = add nsw i32 %phi6, -3 |
| %iter.sub = add i32 %iter, -1 |
| %iter.cmp = icmp eq i32 %iter.sub, 0 |
| br i1 %iter.cmp, label %outer_tail, label %inner_loop |
| |
| outer_tail: |
| %phi7 = phi i32 [ %phi2, %guard ], [ %i33, %inner_loop ] |
| %i35 = sub i32 %A, %phi7 |
| %cmp = icmp sgt i32 %i35, 9876 |
| br i1 %cmp, label %exit, label %outer_loop |
| |
| exit: |
| ret void |
| |
| } |