llvm-project

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; RUN: opt %loadNPMPolly '-passes=print<polly-ast>' -disable-output < %s | FileCheck %s
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;#define N 20
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;#include "limits.h"
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;
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;int main () {
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;  int i;
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;  int A[N];
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;
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;  A[0] = 0;
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;
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;  __sync_synchronize();
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;
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;  for (i = 0; i < INT_MAX; i++)
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;    A[0] = i;
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;
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;  __sync_synchronize();
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;
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;  if (A[0] == INT_MAX - 1)
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;    return 0;
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;  else
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;    return 1;
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;}
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target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
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define i32 @main() nounwind {
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entry:
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  %A = alloca [20 x i32], align 4                 ; <ptr> [#uses=3]
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  %arraydecay = getelementptr inbounds [20 x i32], ptr %A, i32 0, i32 0 ; <ptr> [#uses=1]
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  %arrayidx = getelementptr inbounds i32, ptr %arraydecay, i64 0 ; <ptr> [#uses=1]
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  store i32 0, ptr %arrayidx
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  fence seq_cst
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  br label %for.cond
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for.cond:                                         ; preds = %for.inc, %entry
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  %0 = phi i32 [ 0, %entry ], [ %inc, %for.inc ]  ; <i32> [#uses=3]
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  %exitcond = icmp ne i32 %0, 2147483647          ; <i1> [#uses=1]
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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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  %arraydecay2 = getelementptr inbounds [20 x i32], ptr %A, i32 0, i32 0 ; <ptr> [#uses=1]
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  %arrayidx3 = getelementptr inbounds i32, ptr %arraydecay2, i64 0 ; <ptr> [#uses=1]
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  store i32 %0, ptr %arrayidx3
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  br label %for.inc
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for.inc:                                          ; preds = %for.body
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  %inc = add nsw i32 %0, 1                        ; <i32> [#uses=1]
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  br label %for.cond
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for.end:                                          ; preds = %for.cond
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  fence seq_cst
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  %arraydecay5 = getelementptr inbounds [20 x i32], ptr %A, i32 0, i32 0 ; <ptr> [#uses=1]
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  %arrayidx6 = getelementptr inbounds i32, ptr %arraydecay5, i64 0 ; <ptr> [#uses=1]
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  %tmp7 = load i32, ptr %arrayidx6                    ; <i32> [#uses=1]
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  %cmp8 = icmp eq i32 %tmp7, 2147483646           ; <i1> [#uses=1]
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  br i1 %cmp8, label %if.then, label %if.else
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if.then:                                          ; preds = %for.end
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  br label %return
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if.else:                                          ; preds = %for.end
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  br label %return
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return:                                           ; preds = %if.else, %if.then
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  %retval.0 = phi i32 [ 0, %if.then ], [ 1, %if.else ] ; <i32> [#uses=1]
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  ret i32 %retval.0
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}
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; CHECK: for (int c0 = 0; c0 <= 2147483646; c0 += 1)
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; CHECK:   Stmt_for_body(c0);
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