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57 lines
2.0 KiB
57 lines
2.0 KiB
; RUN: opt %loadPolly -polly-scops -analyze < %s | FileCheck %s
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;
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; The load access to A has a pointer-bitcast to another elements size before the
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; GetElementPtr. Verify that we do not the GEP delinearization because it
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; mismatches with the size of the loaded element type.
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;
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; void f(short A[][4], int N, int P) {
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; short(*B)[4] = &A[P][0];
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; for (int i = 0; i < N; i++)
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; *((<4 x short> *)&A[7 * i][0]) = *((<4 x short>)&B[7 * i][0]);
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; }
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;
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define void @f([4 x i16]* %A, i32 %N, i32 %P) {
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entry:
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%arrayidx1 = getelementptr inbounds [4 x i16], [4 x i16]* %A, i32 %P, i64 0
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%tmp = bitcast i16* %arrayidx1 to [4 x i16]*
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br label %for.cond
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for.cond:
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%indvars.iv = phi i32 [ %indvars.iv.next, %for.inc ], [ 0, %entry ]
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%cmp = icmp slt i32 %indvars.iv, %N
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br i1 %cmp, label %for.body, label %for.end
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for.body:
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%mul = mul nsw i32 %indvars.iv, 7
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%arrayidx4 = getelementptr inbounds [4 x i16], [4 x i16]* %tmp, i32 %mul, i64 0
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%bc4 = bitcast i16* %arrayidx4 to <4 x i16>*
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%tmp3 = load <4 x i16>, <4 x i16>* %bc4
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%arrayidx8 = getelementptr inbounds [4 x i16], [4 x i16]* %A, i32 %mul, i64 0
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%bc8 = bitcast i16* %arrayidx8 to <4 x i16>*
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store <4 x i16> %tmp3, <4 x i16>* %bc8
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br label %for.inc
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for.inc:
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%indvars.iv.next = add nuw nsw i32 %indvars.iv, 1
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br label %for.cond
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for.end:
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ret void
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}
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; CHECK: Arrays {
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; CHECK-NEXT: <4 x i16> MemRef_A[*]; // Element size 8
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; CHECK-NEXT: }
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; CHECK: Statements {
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; CHECK-NEXT: Stmt_for_body
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; CHECK-NEXT: Domain :=
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; CHECK-NEXT: [N, P] -> { Stmt_for_body[i0] : 0 <= i0 < N };
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; CHECK-NEXT: Schedule :=
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; CHECK-NEXT: [N, P] -> { Stmt_for_body[i0] -> [i0] };
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; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 0]
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; CHECK-NEXT: [N, P] -> { Stmt_for_body[i0] -> MemRef_A[P + 7i0] };
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; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 0]
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; CHECK-NEXT: [N, P] -> { Stmt_for_body[i0] -> MemRef_A[7i0] };
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; CHECK-NEXT: }
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