1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py 2; RUN: opt -S -loop-reduce < %s | FileCheck %s 3 4target datalayout = "e-p:64:64:64-n32:64" 5 6define void @test1(ptr %p.start, i64 %len) { 7; CHECK-LABEL: @test1( 8; CHECK-NEXT: entry: 9; CHECK-NEXT: [[UGLYGEP:%.*]] = getelementptr i8, ptr [[P_START:%.*]], i64 4 10; CHECK-NEXT: br label [[LOOP:%.*]] 11; CHECK: loop: 12; CHECK-NEXT: [[LSR_IV1:%.*]] = phi ptr [ [[UGLYGEP2:%.*]], [[LOOP]] ], [ [[UGLYGEP]], [[ENTRY:%.*]] ] 13; CHECK-NEXT: [[LSR_IV:%.*]] = phi i64 [ [[LSR_IV_NEXT:%.*]], [[LOOP]] ], [ [[LEN:%.*]], [[ENTRY]] ] 14; CHECK-NEXT: [[TMP0:%.*]] = load volatile i32, ptr [[LSR_IV1]], align 4 15; CHECK-NEXT: [[LSR_IV_NEXT]] = add i64 [[LSR_IV]], -1 16; CHECK-NEXT: [[UGLYGEP2]] = getelementptr i8, ptr [[LSR_IV1]], i64 4 17; CHECK-NEXT: [[C:%.*]] = icmp ne i64 [[LSR_IV_NEXT]], 0 18; CHECK-NEXT: br i1 [[C]], label [[LOOP]], label [[EXIT:%.*]] 19; CHECK: exit: 20; CHECK-NEXT: ret void 21; 22entry: 23 br label %loop 24 25loop: 26 %i = phi i64 [ 0, %entry ], [ %i.next, %loop ] 27 %p = phi ptr [ %p.start, %entry ], [ %p.next, %loop ] 28 %i.next = add nuw i64 %i, 1 29 %p.next = getelementptr i32, ptr %p, i64 1 30 load volatile i32, ptr %p.next 31 %c = icmp ne i64 %i.next, %len 32 br i1 %c, label %loop, label %exit 33 34exit: 35 ret void 36} 37