1 ; RUN: opt %loadPolly -polly-print-scops -disable-output < %s | FileCheck %s
2 ; RUN: opt %loadPolly -polly-codegen -S < %s | FileCheck %s --check-prefix=IR
4 ; Check that we guard the divisions because we moved them and thereby increased
7 ; CHECK: Invalid Context:
8 ; CHECK-NEXT: [p_0] -> { : false }
9 ; CHECK: p0: (((zext i32 %a to i64) /u (zext i32 %b to i64)) /u ((zext i32 %c to i64) /u (zext i32 %d to i64)))
11 ; void f(unsigned *A, unsigned a, unsigned b, unsigned c, unsigned d) {
12 ; for (unsigned i; i < 100; i++)
13 ; A[i] += A[(a / b) / (c / d)];
16 ; IR: %[[A:[.a-zA-Z0-9]*]] = zext i32 %a to i64
17 ; IR-NEXT: %[[B:[.a-zA-Z0-9]*]] = zext i32 %b to i64
18 ; IR-NEXT: %[[R1:[.a-zA-Z0-9]*]] = call i64 @llvm.umax.i64(i64 %[[B]], i64 1)
19 ; IR-NEXT: %[[R2:[.a-zA-Z0-9]*]] = udiv i64 %[[A]], %[[R1]]
20 ; IR-NEXT: %[[C:[.a-zA-Z0-9]*]] = zext i32 %c to i64
21 ; IR-NEXT: %[[D:[.a-zA-Z0-9]*]] = zext i32 %d to i64
22 ; IR-NEXT: %[[R6:[.a-zA-Z0-9]*]] = call i64 @llvm.umax.i64(i64 %[[D]], i64 1)
23 ; IR-NEXT: %[[R7:[.a-zA-Z0-9]*]] = udiv i64 %[[C]], %[[R6]]
24 ; IR-NEXT: %[[R4:[.a-zA-Z0-9]*]] = call i64 @llvm.umax.i64(i64 %[[R7]], i64 1)
25 ; IR-NEXT: %[[R8:[.a-zA-Z0-9]*]] = udiv i64 %[[R2]], %[[R4]]
27 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
29 define void @f(ptr %A, i32 %a, i32 %b, i32 %c, i32 %d) {
33 for.cond: ; preds = %for.inc, %entry
34 %indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %entry ]
35 %cmp = icmp ult i64 %indvars.iv, 100
36 br i1 %cmp, label %for.body, label %for.end
38 for.body: ; preds = %for.cond
39 %div = udiv i32 %a, %b
40 %div1 = udiv i32 %c, %d
41 %div2 = udiv i32 %div, %div1
42 %idxprom = zext i32 %div2 to i64
43 %arrayidx = getelementptr inbounds i32, ptr %A, i64 %idxprom
44 %tmp = load i32, ptr %arrayidx, align 4
45 %arrayidx4 = getelementptr inbounds i32, ptr %A, i64 %indvars.iv
46 %tmp1 = load i32, ptr %arrayidx4, align 4
47 %add = add i32 %tmp1, %tmp
48 store i32 %add, ptr %arrayidx4, align 4
51 for.inc: ; preds = %for.body
52 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
55 for.end: ; preds = %for.cond