forked from OSchip/llvm-project
89 lines
3.1 KiB
LLVM
89 lines
3.1 KiB
LLVM
; RUN: opt < %s -passes='print<loop-cache-cost>' -disable-output 2>&1 | FileCheck %s
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target datalayout = "e-m:e-i64:64-n32:64"
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target triple = "powerpc64le-unknown-linux-gnu"
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; void foo(long n, long m, long o, int A[n][m][o], int B[n][m][o], int C[n][m][o]) {
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; for (long i = 0; i < n; i++)
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; for (long j = 0; j < m; j++)
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; for (long k = 0; k < o; k++)
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; A[i][k][j] += B[i][k][j] + C[i][j][k];
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; }
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; CHECK-DAG: Loop 'for.i' has cost = 3000000
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; CHECK-DAG: Loop 'for.k' has cost = 2030000
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; CHECK-DAG: Loop 'for.j' has cost = 1060000
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define void @foo(i64 %n, i64 %m, i64 %o, i32* %A, i32* %B, i32* %C) {
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entry:
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%cmp32 = icmp sgt i64 %n, 0
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%cmp230 = icmp sgt i64 %m, 0
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%cmp528 = icmp sgt i64 %o, 0
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br i1 %cmp32, label %for.cond1.preheader.lr.ph, label %for.end
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for.cond1.preheader.lr.ph: ; preds = %entry
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br i1 %cmp230, label %for.i.preheader, label %for.end
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for.i.preheader: ; preds = %for.cond1.preheader.lr.ph
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br i1 %cmp528, label %for.i.preheader.split, label %for.end
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for.i.preheader.split: ; preds = %for.i.preheader
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br label %for.i
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for.i: ; preds = %for.inci, %for.i.preheader.split
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%i = phi i64 [ %inci, %for.inci ], [ 0, %for.i.preheader.split ]
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%muli = mul i64 %i, %m
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br label %for.j
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for.j: ; preds = %for.incj, %for.i
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%j = phi i64 [ %incj, %for.incj ], [ 0, %for.i ]
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%addj = add i64 %muli, %j
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%mulj = mul i64 %addj, %o
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br label %for.k
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for.k: ; preds = %for.k, %for.j
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%k = phi i64 [ 0, %for.j ], [ %inck, %for.k ]
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; B[i][k][j]
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%addk = add i64 %muli, %k
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%mulk = mul i64 %addk, %o
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%arrayidx1 = add i64 %j, %mulk
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%arrayidx2 = getelementptr inbounds i32, i32* %B, i64 %arrayidx1
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%elem_B = load i32, i32* %arrayidx2, align 4
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; C[i][j][k]
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%arrayidx3 = add i64 %k, %mulj
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%arrayidx4 = getelementptr inbounds i32, i32* %C, i64 %arrayidx3
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%elem_C = load i32, i32* %arrayidx4, align 4
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; A[i][k][j]
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%arrayidx5 = getelementptr inbounds i32, i32* %A, i64 %arrayidx1
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%elem_A = load i32, i32* %arrayidx5, align 4
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; A[i][k][j] += B[i][k][j] + C[i][j][k]
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%add1 = add i32 %elem_B, %elem_C
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%add2 = add i32 %add1, %elem_A
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%arrayidx6 = getelementptr inbounds i32, i32* %A, i64 %arrayidx1
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store i32 %add2, i32* %arrayidx6, align 4
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%inck = add nsw i64 %k, 1
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%exitcond.us = icmp eq i64 %inck, %o
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br i1 %exitcond.us, label %for.incj, label %for.k
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for.incj: ; preds = %for.k
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%incj = add nsw i64 %j, 1
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%exitcond54.us = icmp eq i64 %incj, %m
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br i1 %exitcond54.us, label %for.inci, label %for.j
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for.inci: ; preds = %for.incj
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%inci = add nsw i64 %i, 1
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%exitcond55.us = icmp eq i64 %inci, %n
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br i1 %exitcond55.us, label %for.end.loopexit, label %for.i
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for.end.loopexit: ; preds = %for.inci
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br label %for.end
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for.end: ; preds = %for.end.loopexit, %for.cond1.preheader.lr.ph, %entry
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ret void
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}
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