| ; REQUIRES: asserts |
| ; RUN: opt < %s -passes=loop-interchange -cache-line-size=64 -verify-dom-info -verify-loop-info \ |
| ; RUN: -S -debug 2>&1 | FileCheck %s |
| |
| target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" |
| |
| @D = common global [100 x [100 x [100 x i32]]] zeroinitializer |
| |
| ;; Test for interchange in loop nest greater than 2. |
| ;; for(int i=0;i<100;i++) |
| ;; for(int j=0;j<100;j++) |
| ;; for(int k=0;k<100;k++) |
| ;; D[i][k][j] = D[i][k][j]+t; |
| |
| ; CHECK: Processing InnerLoopId = 2 and OuterLoopId = 1 |
| ; CHECK: Loops interchanged. |
| |
| ; CHECK: Processing InnerLoopId = 1 and OuterLoopId = 0 |
| ; CHECK: Interchanging loops not profitable. |
| |
| define void @interchange_08(i32 %t){ |
| entry: |
| br label %for.cond1.preheader |
| |
| for.cond1.preheader: ; preds = %for.inc15, %entry |
| %i.028 = phi i64 [ 0, %entry ], [ %inc16, %for.inc15 ] |
| br label %for.cond4.preheader |
| |
| for.cond4.preheader: ; preds = %for.inc12, %for.cond1.preheader |
| %j.027 = phi i64 [ 0, %for.cond1.preheader ], [ %inc13, %for.inc12 ] |
| br label %for.body6 |
| |
| for.body6: ; preds = %for.body6, %for.cond4.preheader |
| %k.026 = phi i64 [ 0, %for.cond4.preheader ], [ %inc, %for.body6 ] |
| %arrayidx8 = getelementptr inbounds [100 x [100 x [100 x i32]]], ptr @D, i32 0, i64 %i.028, i64 %k.026, i64 %j.027 |
| %0 = load i32, ptr %arrayidx8 |
| %add = add nsw i32 %0, %t |
| store i32 %add, ptr %arrayidx8 |
| %inc = add nuw nsw i64 %k.026, 1 |
| %exitcond = icmp eq i64 %inc, 100 |
| br i1 %exitcond, label %for.inc12, label %for.body6 |
| |
| for.inc12: ; preds = %for.body6 |
| %inc13 = add nuw nsw i64 %j.027, 1 |
| %exitcond29 = icmp eq i64 %inc13, 100 |
| br i1 %exitcond29, label %for.inc15, label %for.cond4.preheader |
| |
| for.inc15: ; preds = %for.inc12 |
| %inc16 = add nuw nsw i64 %i.028, 1 |
| %exitcond30 = icmp eq i64 %inc16, 100 |
| br i1 %exitcond30, label %for.end17, label %for.cond1.preheader |
| |
| for.end17: ; preds = %for.inc15 |
| ret void |
| } |
