forked from OSchip/llvm-project
47 lines
1.4 KiB
LLVM
47 lines
1.4 KiB
LLVM
; 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 (char i = 0; i < (char)N; i++)
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; A[i]++;
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; }
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;
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; FIXME: We should the truncate precisely... or just make it a separate parameter.
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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] -> { : N <= -129 or N >= 128 }
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;
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; CHECK: Domain :=
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; CHECK-NEXT: [N] -> { Stmt_for_body[i0] : 0 <= i0 < N };
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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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%i.0 = phi i8 [ 0, %entry ], [ %inc4, %for.inc ]
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%conv = sext i8 %i.0 to i32
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%conv1 = zext i16 %N to i32
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%sext = shl i32 %conv1, 24
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%conv2 = ashr exact i32 %sext, 24
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%cmp = icmp slt i32 %conv, %conv2
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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 = sext i8 %i.0 to i64
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%arrayidx = getelementptr inbounds i8, i8* %A, i64 %idxprom
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%tmp = load i8, i8* %arrayidx, align 1
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%inc = add i8 %tmp, 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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%inc4 = add nsw i8 %i.0, 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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