1; RUN: opt %loadPolly -polly-opt-isl -polly-pattern-matching-based-opts=true -debug < %s 2>&1 | FileCheck %s 2; REQUIRES: asserts 3; 4; /* C := alpha*A*B + beta*C */ 5; for (i = 0; i < _PB_NI; i++) 6; for (j = 0; j < _PB_NJ; j += 2) 7; { 8; C[i][j] *= beta; 9; for (k = 0; k < _PB_NK; ++k) 10; C[i][j] += alpha * A[i][k] * B[k][j]; 11; } 12; 13; Check that we won’t detect the matrix multiplication pattern, 14; if, for example, there are memory accesses that have stride 2 15; after the interchanging of loops. 16; 17; CHECK-NOT: The matrix multiplication pattern was detected 18; 19target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" 20target triple = "x86_64-unknown-unknown" 21 22define 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 { 23bb: 24 br label %bb8 25 26bb8: ; preds = %bb29, %bb 27 %tmp = phi i64 [ 0, %bb ], [ %tmp30, %bb29 ] 28 br label %bb9 29 30bb9: ; preds = %bb26, %bb8 31 %tmp10 = phi i64 [ 0, %bb8 ], [ %tmp27, %bb26 ] 32 %tmp11 = getelementptr inbounds [1056 x double], [1056 x double]* %arg5, i64 %tmp, i64 %tmp10 33 %tmp12 = load double, double* %tmp11, align 8 34 %tmp13 = fmul double %tmp12, %arg4 35 store double %tmp13, double* %tmp11, align 8 36 br label %Copy_0 37 38Copy_0: ; preds = %Copy_0, %bb9 39 %tmp15 = phi i64 [ 0, %bb9 ], [ %tmp24, %Copy_0 ] 40 %tmp16 = getelementptr inbounds [1024 x double], [1024 x double]* %arg6, i64 %tmp, i64 %tmp15 41 %tmp17 = load double, double* %tmp16, align 8 42 %tmp18 = fmul double %tmp17, %arg3 43 %tmp19 = getelementptr inbounds [1056 x double], [1056 x double]* %arg7, i64 %tmp15, i64 %tmp10 44 %tmp20 = load double, double* %tmp19, align 8 45 %tmp21 = fmul double %tmp18, %tmp20 46 %tmp22 = load double, double* %tmp11, align 8 47 %tmp23 = fadd double %tmp22, %tmp21 48 store double %tmp23, double* %tmp11, align 8 49 %tmp24 = add nuw nsw i64 %tmp15, 1 50 %tmp25 = icmp ne i64 %tmp24, 1024 51 br i1 %tmp25, label %Copy_0, label %bb26 52 53bb26: ; preds = %Copy_0 54 %tmp27 = add nuw nsw i64 %tmp10, 2 55 %tmp28 = icmp ne i64 %tmp27, 1056 56 br i1 %tmp28, label %bb9, label %bb29 57 58bb29: ; preds = %bb26 59 %tmp30 = add nuw nsw i64 %tmp, 1 60 %tmp31 = icmp ne i64 %tmp30, 1056 61 br i1 %tmp31, label %bb8, label %bb32 62 63bb32: ; preds = %bb29 64 ret void 65} 66