| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt < %s -loop-interchange -verify-dom-info -verify-loop-info -verify-scev -verify-loop-lcssa -loop-interchange-threshold=-1000 -S 2>&1 | FileCheck %s |
| ;; Checks the order of the inner phi nodes does not cause havoc. |
| ;; The inner loop has a reduction into c. The IV is not the first phi. |
| |
| target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64" |
| target triple = "armv8--linux-gnueabihf" |
| |
| |
| |
| ; Function Attrs: norecurse nounwind |
| define void @test(i32 %T, [90 x i32]* noalias nocapture %C, i16* noalias nocapture readonly %A, i16* noalias nocapture readonly %B) local_unnamed_addr #0 { |
| ; CHECK-LABEL: @test( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: br label [[FOR3_PREHEADER:%.*]] |
| ; CHECK: for1.header.preheader: |
| ; CHECK-NEXT: br label [[FOR1_HEADER:%.*]] |
| ; CHECK: for1.header: |
| ; CHECK-NEXT: [[I:%.*]] = phi i32 [ [[INC20:%.*]], [[FOR1_INC19:%.*]] ], [ 0, [[FOR1_HEADER_PREHEADER:%.*]] ] |
| ; CHECK-NEXT: [[MUL:%.*]] = mul nsw i32 [[I]], 90 |
| ; CHECK-NEXT: br label [[FOR2_HEADER_PREHEADER:%.*]] |
| ; CHECK: for2.header.preheader: |
| ; CHECK-NEXT: br label [[FOR2_HEADER:%.*]] |
| ; CHECK: for2.header: |
| ; CHECK-NEXT: [[J:%.*]] = phi i32 [ [[INC17:%.*]], [[FOR2_INC16:%.*]] ], [ 0, [[FOR2_HEADER_PREHEADER]] ] |
| ; CHECK-NEXT: br label [[FOR3_SPLIT1:%.*]] |
| ; CHECK: for3.preheader: |
| ; CHECK-NEXT: br label [[FOR3:%.*]] |
| ; CHECK: for3: |
| ; CHECK-NEXT: [[K:%.*]] = phi i32 [ [[INC:%.*]], [[FOR3_SPLIT:%.*]] ], [ 1, [[FOR3_PREHEADER]] ] |
| ; CHECK-NEXT: br label [[FOR1_HEADER_PREHEADER]] |
| ; CHECK: for3.split1: |
| ; CHECK-NEXT: [[ADD:%.*]] = add nsw i32 [[K]], [[MUL]] |
| ; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i16, i16* [[A:%.*]], i32 [[ADD]] |
| ; CHECK-NEXT: [[TMP0:%.*]] = load i16, i16* [[ARRAYIDX]], align 2 |
| ; CHECK-NEXT: [[ADD15:%.*]] = add nsw i16 [[TMP0]], 1 |
| ; CHECK-NEXT: store i16 [[ADD15]], i16* [[ARRAYIDX]] |
| ; CHECK-NEXT: br label [[FOR2_INC16]] |
| ; CHECK: for3.split: |
| ; CHECK-NEXT: [[INC]] = add nuw nsw i32 [[K]], 1 |
| ; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i32 [[INC]], 90 |
| ; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR1_LOOPEXIT:%.*]], label [[FOR3]] |
| ; CHECK: for2.inc16: |
| ; CHECK-NEXT: [[INC17]] = add nuw nsw i32 [[J]], 1 |
| ; CHECK-NEXT: [[EXITCOND47:%.*]] = icmp eq i32 [[INC17]], 90 |
| ; CHECK-NEXT: br i1 [[EXITCOND47]], label [[FOR1_INC19]], label [[FOR2_HEADER]] |
| ; CHECK: for1.inc19: |
| ; CHECK-NEXT: [[INC20]] = add nuw nsw i32 [[I]], 1 |
| ; CHECK-NEXT: [[EXITCOND48:%.*]] = icmp eq i32 [[INC20]], 90 |
| ; CHECK-NEXT: br i1 [[EXITCOND48]], label [[FOR3_SPLIT]], label [[FOR1_HEADER]] |
| ; CHECK: for1.loopexit: |
| ; CHECK-NEXT: br label [[EXIT:%.*]] |
| ; CHECK: exit: |
| ; CHECK-NEXT: ret void |
| ; |
| entry: |
| br label %for1.header |
| |
| for1.header: ; preds = %entry |
| %i = phi i32 [ %inc20, %for1.inc19 ], [ 0, %entry ] |
| %mul = mul nsw i32 %i, 90 |
| br label %for2.header |
| |
| for2.header: ; preds = %for2.inc16, %for1.header |
| %j = phi i32 [ 0, %for1.header ], [ %inc17, %for2.inc16 ] |
| br label %for3 |
| |
| for3: ; preds = %for3, %for2.header |
| %k = phi i32 [ 1, %for2.header ], [ %inc, %for3 ] |
| %add = add nsw i32 %k, %mul |
| %arrayidx = getelementptr inbounds i16, i16* %A, i32 %add |
| %0 = load i16, i16* %arrayidx, align 2 |
| %add15 = add nsw i16 %0, 1 |
| store i16 %add15, i16* %arrayidx |
| %inc = add nuw nsw i32 %k, 1 |
| %exitcond = icmp eq i32 %inc, 90 |
| br i1 %exitcond, label %for2.inc16, label %for3 |
| |
| for2.inc16: ; preds = %for.body6 |
| %inc17 = add nuw nsw i32 %j, 1 |
| %exitcond47 = icmp eq i32 %inc17, 90 |
| br i1 %exitcond47, label %for1.inc19, label %for2.header |
| |
| for1.inc19: ; preds = %for2.inc16 |
| %inc20 = add nuw nsw i32 %i, 1 |
| %exitcond48 = icmp eq i32 %inc20, 90 |
| br i1 %exitcond48, label %for1.loopexit, label %for1.header |
| |
| for1.loopexit: ; preds = %for1.inc19 |
| br label %exit |
| |
| exit: ; preds = %for1.loopexit |
| ret void |
| } |