forked from OSchip/llvm-project
81 lines
2.5 KiB
LLVM
81 lines
2.5 KiB
LLVM
; RUN: opt %loadPolly -polly-scops -analyze < %s | FileCheck %s
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; RUN: opt %loadPolly -polly-ast -analyze < %s | FileCheck %s --check-prefix=AST
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;
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; void f(int *A, int *B, int N) {
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; for (int i = 0; i < N; i++) {
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; A[i]++;
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; switch (N) {
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; case 0:
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; B[i]++;
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; break;
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; default:
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; return;
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; }
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; }
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; }
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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] -> { Stmt_for_body[0] : N > 0 };
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; CHECK-NEXT: Schedule :=
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; CHECK-NEXT: [N] -> { Stmt_for_body[i0] -> [0] };
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; CHECK-NEXT: ReadAccess := [Reduction Type: +] [Scalar: 0]
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; CHECK-NEXT: [N] -> { Stmt_for_body[i0] -> MemRef_A[0] };
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; CHECK-NEXT: MustWriteAccess := [Reduction Type: +] [Scalar: 0]
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; CHECK-NEXT: [N] -> { Stmt_for_body[i0] -> MemRef_A[0] };
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; CHECK-NEXT: }
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; AST: if (1)
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;
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; AST: if (N >= 1)
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; AST-NEXT: Stmt_for_body(0);
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;
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; AST: else
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; AST-NEXT: { /* original code */ }
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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define void @f(i32* %A, i32* %B, i32 %N) {
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entry:
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%tmp = sext i32 %N to i64
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br label %for.cond
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for.cond: ; preds = %for.inc, %entry
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%indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %entry ]
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%cmp = icmp slt i64 %indvars.iv, %tmp
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br i1 %cmp, label %for.body, label %for.end.loopexit
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for.body: ; preds = %for.cond
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%arrayidx = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
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%tmp1 = load i32, i32* %arrayidx, align 4
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%inc = add nsw i32 %tmp1, 1
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store i32 %inc, i32* %arrayidx, align 4
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switch i32 %N, label %sw.default [
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i32 0, label %sw.bb
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]
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sw.bb: ; preds = %for.body
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%arrayidx2 = getelementptr inbounds i32, i32* %B, i64 %indvars.iv
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%tmp2 = load i32, i32* %arrayidx2, align 4
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%inc3 = add nsw i32 %tmp2, 1
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store i32 %inc3, i32* %arrayidx2, align 4
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br label %sw.epilog
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sw.default: ; preds = %for.body
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br label %for.end
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sw.epilog: ; preds = %sw.bb
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br label %for.inc
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for.inc: ; preds = %sw.epilog
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%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
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br label %for.cond
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for.end.loopexit: ; preds = %for.cond
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br label %for.end
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for.end: ; preds = %for.end.loopexit, %sw.default
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ret void
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}
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