1; RUN: opt %loadNPMPolly '-passes=print<polly-ast>' -disable-output < %s | FileCheck %s 2 3;#define N 20 4;#include "limits.h" 5;#include <stdio.h> 6;int A[N]; 7; 8;void single_do_loop_int_max_iterations() { 9; int i; 10; 11; __sync_synchronize(); 12; 13; i = 0; 14; 15; do { 16; A[0] = i; 17; ++i; 18; } while (i < INT_MAX); 19; 20; __sync_synchronize(); 21;} 22; 23;int main () { 24; int i; 25; 26; A[0] = 0; 27; 28; single_do_loop_int_max_iterations(); 29; 30; fprintf(stdout, "Output %d\n", A[0]); 31; 32; if (A[0] == INT_MAX - 1) 33; return 0; 34; else 35; return 1; 36;} 37 38target 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" 39 40%struct._IO_FILE = type { i32, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, i32, i32, i64, i16, i8, [1 x i8], ptr, i64, ptr, ptr, ptr, ptr, i64, i32, [20 x i8] } 41%struct._IO_marker = type { ptr, ptr, i32 } 42 43@A = common global [20 x i32] zeroinitializer, align 4 ; <ptr> [#uses=1] 44@stdout = external global ptr ; <ptr> [#uses=1] 45@.str = private constant [11 x i8] c"Output %d\0A\00" ; <ptr> [#uses=1] 46 47define void @single_do_loop_int_max_iterations() nounwind { 48entry: 49 fence seq_cst 50 br label %do.body 51 52do.body: ; preds = %do.cond, %entry 53 %0 = phi i32 [ 0, %entry ], [ %inc, %do.cond ] ; <i32> [#uses=2] 54 store i32 %0, ptr @A 55 %inc = add nsw i32 %0, 1 ; <i32> [#uses=2] 56 br label %do.cond 57 58do.cond: ; preds = %do.body 59 %exitcond = icmp ne i32 %inc, 2147483647 ; <i1> [#uses=1] 60 br i1 %exitcond, label %do.body, label %do.end 61 62do.end: ; preds = %do.cond 63 fence seq_cst 64 ret void 65} 66 67define i32 @main() nounwind { 68entry: 69 store i32 0, ptr @A 70 call void @single_do_loop_int_max_iterations() 71 %tmp = load ptr, ptr @stdout ; <ptr> [#uses=1] 72 %tmp1 = load i32, ptr @A ; <i32> [#uses=1] 73 %call = call i32 (ptr, ptr, ...) @fprintf(ptr %tmp, ptr @.str, i32 %tmp1) ; <i32> [#uses=0] 74 %tmp2 = load i32, ptr @A ; <i32> [#uses=1] 75 %cmp = icmp eq i32 %tmp2, 2147483646 ; <i1> [#uses=1] 76 br i1 %cmp, label %if.then, label %if.else 77 78if.then: ; preds = %entry 79 br label %return 80 81if.else: ; preds = %entry 82 br label %return 83 84return: ; preds = %if.else, %if.then 85 %retval.0 = phi i32 [ 0, %if.then ], [ 1, %if.else ] ; <i32> [#uses=1] 86 ret i32 %retval.0 87} 88 89declare i32 @fprintf(ptr, ptr, ...) 90 91; CHECK: for (int c0 = 0; c0 <= 2147483646; c0 += 1) 92; CHECK: Stmt_do_body(c0); 93