forked from OSchip/llvm-project
56 lines
1.8 KiB
LLVM
56 lines
1.8 KiB
LLVM
; RUN: opt %loadPolly -polly-scops -analyze < %s | FileCheck %s
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;
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; Verify we do not generate an empty invalid context only because the wrap
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; in the second conditional will always happen if the block is executed.
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;
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; CHECK: Invalid Context:
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; CHECK-NEXT: [N] -> { : N > 0 }
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;
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; void f(char *A, char N) {
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; for (char i = 0; i < 10; i++) {
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; if (N > 0)
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; if (1 + 127 * N > 0)
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; A[i] = 1;
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; A[i] = 0;
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; }
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; }
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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, i8 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 i8 [ %indvars.iv.next, %for.inc ], [ 0, %entry ]
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%exitcond = icmp ne i8 %indvars.iv, 10
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br i1 %exitcond, label %for.body, label %for.end
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for.body: ; preds = %for.cond
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%cmp3 = icmp sgt i8 %N, 0
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br i1 %cmp3, label %if.then, label %if.end10
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if.then: ; preds = %for.body
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%mul = mul i8 %N, 127
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%add = add i8 1, %mul
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%cmp7 = icmp sgt i8 %add, 0
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br i1 %cmp7, label %if.then9, label %if.end10
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if.then9: ; preds = %if.end
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%arrayidx = getelementptr inbounds i8, i8* %A, i8 %indvars.iv
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store i8 1, i8* %arrayidx, align 1
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br label %if.end10
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if.end10: ; preds = %if.then9, %if.end
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%arrayidx12 = getelementptr inbounds i8, i8* %A, i8 %indvars.iv
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store i8 0, i8* %arrayidx12, align 1
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br label %for.inc
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for.inc: ; preds = %if.end10, %if.then
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%indvars.iv.next = add nuw nsw i8 %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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