1 ; RUN: opt < %s -loop-reduce -S | FileCheck %s
3 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
4 target triple = "x86_64-unknown-linux-gnu"
6 @a = external global i32, align 4
7 @d = external global i8, align 1
15 %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
16 %arrayidx = getelementptr inbounds i32, i32* @a, i64 %indvars.iv
17 %cmp = icmp ne i32* %arrayidx, bitcast (i8* @d to i32*)
18 %indvars.iv.next = add i64 %indvars.iv, 1
19 br i1 %cmp, label %for.body, label %for.end
21 ; CHECK: %[[phi:.*]] = phi i8* [ %[[gep:.*]], {{.*}} ], [ getelementptr (i8, i8* @d, i64 sub (i64 4, i64 ptrtoint (i32* @a to i64))), {{.*}} ]
22 ; CHECK-NEXT: %[[gep]] = getelementptr i8, i8* %[[phi]], i64 -4
23 ; CHECK-NEXT: %[[cst:.*]] = bitcast i8* %[[gep]] to i32*
24 ; CHECK-NEXT: %[[cmp:.*]] = icmp ne i32* %[[cst]], null
25 ; CHECK-NEXT: br i1 %[[cmp]]