forked from OSchip/llvm-project
69 lines
2.3 KiB
LLVM
69 lines
2.3 KiB
LLVM
; RUN: opt %loadPolly -polly-stmt-granularity=scalar-indep -polly-print-instructions -polly-scops -analyze < %s | FileCheck %s -match-full-lines
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;
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; Split a block into two independent statements that share no scalar.
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; This case has the instructions of the two statements interleaved, such that
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; splitting the BasicBlock in the middle would cause a scalar dependency.
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;
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; for (int j = 0; j < n; j += 1) {
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; body:
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; double valA = A[0];
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; double valB = 21.0 + 21.0;
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; A[0] = valA;
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; B[0] = valB;
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; }
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;
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define void @func(i32 %n, double* noalias nonnull %A, double* noalias nonnull %B) {
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entry:
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br label %for
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for:
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%j = phi i32 [0, %entry], [%j.inc, %inc]
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%j.cmp = icmp slt i32 %j, %n
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br i1 %j.cmp, label %body, label %exit
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body:
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%valA = load double, double* %A
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%valB = fadd double 21.0, 21.0
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store double %valA, double* %A
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store double %valB, double* %B
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br label %inc
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inc:
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%j.inc = add nuw nsw i32 %j, 1
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br label %for
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exit:
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br label %return
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return:
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ret void
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}
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; CHECK: Statements {
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; CHECK-NEXT: Stmt_body
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; CHECK-NEXT: Domain :=
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; CHECK-NEXT: [n] -> { Stmt_body[i0] : 0 <= i0 < n };
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; CHECK-NEXT: Schedule :=
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; CHECK-NEXT: [n] -> { Stmt_body[i0] -> [i0, 0] };
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; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 0]
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; CHECK-NEXT: [n] -> { Stmt_body[i0] -> MemRef_A[0] };
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; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 0]
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; CHECK-NEXT: [n] -> { Stmt_body[i0] -> MemRef_A[0] };
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; CHECK-NEXT: Instructions {
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; CHECK-NEXT: %valA = load double, double* %A
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; CHECK-NEXT: store double %valA, double* %A
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; CHECK-NEXT: }
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; CHECK-NEXT: Stmt_body_b
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; CHECK-NEXT: Domain :=
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; CHECK-NEXT: [n] -> { Stmt_body_b[i0] : 0 <= i0 < n };
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; CHECK-NEXT: Schedule :=
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; CHECK-NEXT: [n] -> { Stmt_body_b[i0] -> [i0, 1] };
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; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 0]
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; CHECK-NEXT: [n] -> { Stmt_body_b[i0] -> MemRef_B[0] };
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; CHECK-NEXT: Instructions {
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; CHECK-NEXT: %valB = fadd double 2.100000e+01, 2.100000e+01
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; CHECK-NEXT: store double %valB, double* %B
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; CHECK-NEXT: }
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; CHECK-NEXT: }
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