forked from OSchip/llvm-project
44 lines
1.5 KiB
LLVM
44 lines
1.5 KiB
LLVM
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; RUN: opt %loadPolly -polly-scops -analyze < %s | FileCheck %s
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;
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; void f(char *A, short N) {
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; for (short i = 0; i < N; i++)
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; A[(char)(N)]++;
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; }
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;
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; CHECK: Assumed Context:
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; CHECK-NEXT: [N] -> { : }
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; CHECK-NEXT: Invalid Context:
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; CHECK-NEXT: [N] -> { : 1 = 0 }
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;
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; CHECK: ReadAccess := [Reduction Type: +] [Scalar: 0]
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; CHECK-NEXT: [N] -> { Stmt_for_body[i0] -> MemRef_A[o0] : 256*floor((-N + o0)/256) = -N + o0 and -128 <= o0 <= 127 };
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; CHECK-NEXT: MustWriteAccess := [Reduction Type: +] [Scalar: 0]
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; CHECK-NEXT: [N] -> { Stmt_for_body[i0] -> MemRef_A[o0] : 256*floor((-N + o0)/256) = -N + o0 and -128 <= o0 <= 127 };
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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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define void @f(i8* %A, i16 signext %N) {
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entry:
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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 i16 [ %indvars.iv.next, %for.inc ], [ 0, %entry ]
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%cmp = icmp slt i16 %indvars.iv, %N
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br i1 %cmp, label %for.body, label %for.end
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for.body: ; preds = %for.cond
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%idxprom = trunc i16 %N to i8
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%arrayidx = getelementptr inbounds i8, i8* %A, i8 %idxprom
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%tmp1 = load i8, i8* %arrayidx, align 1
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%inc = add i8 %tmp1, 1
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store i8 %inc, i8* %arrayidx, align 1
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br label %for.inc
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for.inc: ; preds = %for.body
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%indvars.iv.next = add nuw nsw i16 %indvars.iv, 1
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br label %for.cond
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for.end: ; preds = %for.cond
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ret void
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}
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