div_by_zero.ll
1.03 KB
; RUN: opt %loadPolly -polly-scops -analyze < %s | FileCheck %s
;
; void f(int *A, int N) {
; for (int i = 0; i < N; i++)
; A[i / 0]++;
; }
;
; CHECK-NOT: Statement
;
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
define void @f(i32* %A, i32 %N) {
entry:
br label %for.cond
for.cond: ; preds = %for.inc, %entry
%i.0 = phi i32 [ 0, %entry ], [ %inc1, %for.inc ]
%cmp = icmp slt i32 %i.0, %N
br i1 %cmp, label %for.body, label %for.end
for.body: ; preds = %for.cond
%div = sdiv i32 %i.0, 0
%idxprom = sext i32 %div to i64
%arrayidx = getelementptr inbounds i32, i32* %A, i64 %idxprom
%tmp = load i32, i32* %arrayidx, align 4
%inc = add nsw i32 %tmp, 1
store i32 %inc, i32* %arrayidx, align 4
br label %for.inc
for.inc: ; preds = %for.body
%inc1 = add nuw nsw i32 %i.0, 1
br label %for.cond
for.end: ; preds = %for.cond
ret void
}