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; RUN: opt %loadPolly -polly-opt-isl -polly-pattern-matching-based-opts=true -debug < %s 2>&1 | FileCheck %s
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; REQUIRES: asserts
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;
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; /* C := alpha*A*B + beta*C */
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; for (i = 0; i < _PB_NI; i++)
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; for (j = 0; j < _PB_NJ; j += 2)
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; {
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; C[i][j] *= beta;
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; for (k = 0; k < _PB_NK; ++k)
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; C[i][j] += alpha * A[i][k] * B[k][j];
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; }
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;
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; Check that we won’t detect the matrix multiplication pattern,
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; if, for example, there are memory accesses that have stride 2
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; after the interchanging of loops.
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;
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; CHECK-NOT: The matrix multiplication pattern was detected
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;
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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-unknown"
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define internal void @kernel_gemm(i32 %arg, i32 %arg1, i32 %arg2, double %arg3, double %arg4, [1056 x double]* %arg5, [1024 x double]* %arg6, [1056 x double]* %arg7) #0 {
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bb:
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br label %bb8
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bb8: ; preds = %bb29, %bb
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%tmp = phi i64 [ 0, %bb ], [ %tmp30, %bb29 ]
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br label %bb9
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bb9: ; preds = %bb26, %bb8
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%tmp10 = phi i64 [ 0, %bb8 ], [ %tmp27, %bb26 ]
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%tmp11 = getelementptr inbounds [1056 x double], [1056 x double]* %arg5, i64 %tmp, i64 %tmp10
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%tmp12 = load double, double* %tmp11, align 8
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%tmp13 = fmul double %tmp12, %arg4
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store double %tmp13, double* %tmp11, align 8
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br label %Copy_0
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Copy_0: ; preds = %Copy_0, %bb9
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%tmp15 = phi i64 [ 0, %bb9 ], [ %tmp24, %Copy_0 ]
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%tmp16 = getelementptr inbounds [1024 x double], [1024 x double]* %arg6, i64 %tmp, i64 %tmp15
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%tmp17 = load double, double* %tmp16, align 8
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%tmp18 = fmul double %tmp17, %arg3
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%tmp19 = getelementptr inbounds [1056 x double], [1056 x double]* %arg7, i64 %tmp15, i64 %tmp10
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%tmp20 = load double, double* %tmp19, align 8
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%tmp21 = fmul double %tmp18, %tmp20
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%tmp22 = load double, double* %tmp11, align 8
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%tmp23 = fadd double %tmp22, %tmp21
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store double %tmp23, double* %tmp11, align 8
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%tmp24 = add nuw nsw i64 %tmp15, 1
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%tmp25 = icmp ne i64 %tmp24, 1024
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br i1 %tmp25, label %Copy_0, label %bb26
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bb26: ; preds = %Copy_0
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%tmp27 = add nuw nsw i64 %tmp10, 2
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%tmp28 = icmp ne i64 %tmp27, 1056
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br i1 %tmp28, label %bb9, label %bb29
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bb29: ; preds = %bb26
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%tmp30 = add nuw nsw i64 %tmp, 1
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%tmp31 = icmp ne i64 %tmp30, 1056
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br i1 %tmp31, label %bb8, label %bb32
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bb32: ; preds = %bb29
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ret void
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}
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