2015-02-19 13:31:07 +08:00
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; RUN: opt %loadPolly -polly-detect-unprofitable -polly-no-early-exit -polly-ast -analyze < %s | FileCheck %s
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2012-12-04 05:34:09 +08:00
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;#include <string.h>
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;#define N 1024
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;
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;int A[N];
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;
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;void sequential_loops() {
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; int i;
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; for (i = 0; i < N/2; i++) {
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; A[i] = 1;
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; }
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; for (i = N/2 ; i < N; i++) {
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; A[i] = 2;
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; }
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;}
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;
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;int main () {
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; int i;
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; memset(A, 0, sizeof(int) * N);
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;
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; sequential_loops();
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;
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; for (i = 0; i < N; i++) {
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; if (A[i] != 1 && i < N/2)
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; return 1;
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; if (A[i] != 2 && i >= N/2)
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; return 1;
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; }
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;
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; return 0;
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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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target triple = "x86_64-pc-linux-gnu"
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@A = common global [1024 x i32] zeroinitializer, align 4 ; <[1024 x i32]*> [#uses=5]
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define void @sequential_loops() nounwind {
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bb:
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br label %bb1
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bb1: ; preds = %bb3, %bb
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%indvar1 = phi i64 [ %indvar.next2, %bb3 ], [ 0, %bb ]
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%scevgep4 = getelementptr [1024 x i32]* @A, i64 0, i64 %indvar1
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%exitcond3 = icmp ne i64 %indvar1, 512
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br i1 %exitcond3, label %bb2, label %bb4
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bb2: ; preds = %bb1
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store i32 1, i32* %scevgep4
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br label %bb3
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bb3: ; preds = %bb2
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%indvar.next2 = add i64 %indvar1, 1
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br label %bb1
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bb4: ; preds = %bb1
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br label %bb5
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bb5: ; preds = %bb7, %bb4
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%indvar = phi i64 [ %indvar.next, %bb7 ], [ 0, %bb4 ]
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%tmp = add i64 %indvar, 512
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%scevgep = getelementptr [1024 x i32]* @A, i64 0, i64 %tmp
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%exitcond = icmp ne i64 %indvar, 512
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br i1 %exitcond, label %bb6, label %bb8
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bb6: ; preds = %bb5
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store i32 2, i32* %scevgep
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br label %bb7
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bb7: ; preds = %bb6
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%indvar.next = add i64 %indvar, 1
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br label %bb5
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bb8: ; preds = %bb5
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ret void
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}
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define i32 @main() nounwind {
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bb:
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call void @llvm.memset.p0i8.i64(i8* bitcast ([1024 x i32]* @A to i8*), i8 0, i64 4096, i32 1, i1 false)
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call void @sequential_loops()
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br label %bb1
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bb1: ; preds = %bb15, %bb
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%indvar = phi i64 [ %indvar.next, %bb15 ], [ 0, %bb ]
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%i.0 = trunc i64 %indvar to i32
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%scevgep = getelementptr [1024 x i32]* @A, i64 0, i64 %indvar
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%tmp = icmp slt i32 %i.0, 1024
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br i1 %tmp, label %bb2, label %bb16
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bb2: ; preds = %bb1
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%tmp3 = load i32* %scevgep
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%tmp4 = icmp ne i32 %tmp3, 1
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br i1 %tmp4, label %bb5, label %bb8
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bb5: ; preds = %bb2
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%tmp6 = icmp slt i32 %i.0, 512
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br i1 %tmp6, label %bb7, label %bb8
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bb7: ; preds = %bb5
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br label %bb17
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bb8: ; preds = %bb5, %bb2
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%tmp9 = load i32* %scevgep
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%tmp10 = icmp ne i32 %tmp9, 2
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br i1 %tmp10, label %bb11, label %bb14
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bb11: ; preds = %bb8
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%tmp12 = icmp sge i32 %i.0, 512
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br i1 %tmp12, label %bb13, label %bb14
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bb13: ; preds = %bb11
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br label %bb17
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bb14: ; preds = %bb11, %bb8
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br label %bb15
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bb15: ; preds = %bb14
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%indvar.next = add i64 %indvar, 1
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br label %bb1
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bb16: ; preds = %bb1
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br label %bb17
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bb17: ; preds = %bb16, %bb13, %bb7
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%.0 = phi i32 [ 1, %bb7 ], [ 1, %bb13 ], [ 0, %bb16 ]
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ret i32 %.0
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}
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declare void @llvm.memset.p0i8.i64(i8* nocapture, i8, i64, i32, i1) nounwind
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; CHECK: {
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; CHECK: for (int c1 = 0; c1 <= 511; c1 += 1)
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; CHECK: Stmt_bb2(c1);
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; CHECK: for (int c1 = 0; c1 <= 511; c1 += 1)
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; CHECK: Stmt_bb6(c1);
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; CHECK: }
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