forked from OSchip/llvm-project
72 lines
2.1 KiB
LLVM
72 lines
2.1 KiB
LLVM
; RUN: opt %loadPolly -polly-scops -analyze -polly-delinearize < %s | FileCheck %s
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target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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; This test case checks for array access functions where the order in which the
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; loop ivs appear in the array subscript does not follow the order of the
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; the loops in which they are defined. This (very common) case caused problems
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; in the delinearization pass.
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;
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; void foo(long n, long m, long o, double A[n][m][o]) {
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;
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; for (long i = 0; i < n; i++)
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; for (long k = 0; k < o; k++)
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; for (long j = 0; j < m; j++)
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; A[i][j][k] = 1.0;
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; }
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; CHECK: Assumed Context:
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; CHECK: { : }
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; CHECK: p0: %n
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; CHECK: p1: %o
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; CHECK: p2: %m
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; CHECK-NOT: p3
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;
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; CHECK: Domain
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; CHECK: [n, o, m] -> { Stmt_for_j[i0, i1, i2] : i0 >= 0 and i0 <= -1 + n and i1 >= 0 and i1 <= -1 + o and i2 >= 0 and i2 <= -1 + m };
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; CHECK: Scattering
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; CHECK: [n, o, m] -> { Stmt_for_j[i0, i1, i2] -> scattering[0, i0, 0, i1, 0, i2, 0] };
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; CHECK: WriteAccess
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; CHECK: [n, o, m] -> { Stmt_for_j[i0, i1, i2] -> MemRef_A[i0, i2, i1] };
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define void @foo(i64 %n, i64 %m, i64 %o, double* %A) {
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entry:
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br label %for.i
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for.i:
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%i = phi i64 [ 0, %entry ], [ %i.inc, %for.i.inc ]
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br label %for.k
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for.k:
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%k = phi i64 [ 0, %for.i ], [ %k.inc, %for.k.inc ]
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br label %for.j
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for.j:
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%j = phi i64 [ 0, %for.k ], [ %j.inc, %for.j.inc ]
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%subscript0 = mul i64 %i, %m
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%subscript1 = add i64 %j, %subscript0
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%subscript2 = mul i64 %subscript1, %o
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%subscript = add i64 %subscript2, %k
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%idx = getelementptr inbounds double* %A, i64 %subscript
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store double 1.0, double* %idx
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br label %for.j.inc
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for.j.inc:
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%j.inc = add nsw i64 %j, 1
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%j.exitcond = icmp eq i64 %j.inc, %m
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br i1 %j.exitcond, label %for.k.inc, label %for.j
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for.k.inc:
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%k.inc = add nsw i64 %k, 1
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%k.exitcond = icmp eq i64 %k.inc, %o
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br i1 %k.exitcond, label %for.i.inc, label %for.k
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for.i.inc:
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%i.inc = add nsw i64 %i, 1
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%i.exitcond = icmp eq i64 %i.inc, %n
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br i1 %i.exitcond, label %end, label %for.i
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end:
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ret void
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}
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