forked from OSchip/llvm-project
41 lines
1.3 KiB
LLVM
41 lines
1.3 KiB
LLVM
; RUN: opt < %s -basicaa -loop-interchange -verify-dom-info -S -pass-remarks=loop-interchange 2>&1 | FileCheck %s
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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@A = common global [100 x [100 x i32]] zeroinitializer
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@B = common global [100 x i32] zeroinitializer
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;; for(int i=0;i<100;i++)
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;; for(int j=100;j>=0;j--)
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;; A[j][i] = A[j][i]+k;
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; CHECK: Loop interchanged with enclosing loop.
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define void @interchange_02(i32 %k) {
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entry:
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br label %for.cond1.preheader
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for.cond1.preheader:
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%indvars.iv19 = phi i64 [ 0, %entry ], [ %indvars.iv.next20, %for.inc10 ]
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br label %for.body3
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for.body3:
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%indvars.iv = phi i64 [ 100, %for.cond1.preheader ], [ %indvars.iv.next, %for.body3 ]
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%arrayidx5 = getelementptr inbounds [100 x [100 x i32]], [100 x [100 x i32]]* @A, i64 0, i64 %indvars.iv, i64 %indvars.iv19
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%0 = load i32, i32* %arrayidx5
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%add = add nsw i32 %0, %k
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store i32 %add, i32* %arrayidx5
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%indvars.iv.next = add nsw i64 %indvars.iv, -1
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%cmp2 = icmp sgt i64 %indvars.iv, 0
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br i1 %cmp2, label %for.body3, label %for.inc10
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for.inc10:
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%indvars.iv.next20 = add nuw nsw i64 %indvars.iv19, 1
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%exitcond = icmp eq i64 %indvars.iv.next20, 100
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br i1 %exitcond, label %for.end11, label %for.cond1.preheader
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for.end11:
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ret void
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}
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