1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 3 2; RUN: opt < %s -loop-reduce -S | FileCheck %s 3; REQUIRES: x86-registered-target 4 5target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128-ni:1-p2:32:8:8:32-ni:2" 6target triple = "x86_64-unknown-linux-gnu" 7 8; The returned value should be equal to 9; zext (%phi-1) to i64 10; or simply 1209. 11define noundef i64 @test() { 12; CHECK-LABEL: define noundef i64 @test() { 13; CHECK-NEXT: bb2: 14; CHECK-NEXT: br label [[BB3:%.*]] 15; CHECK: bb3: 16; CHECK-NEXT: [[LSR_IV:%.*]] = phi i32 [ [[LSR_IV_NEXT:%.*]], [[BB10:%.*]] ], [ -1, [[BB2:%.*]] ] 17; CHECK-NEXT: [[TMP0:%.*]] = add i32 [[LSR_IV]], 65536 18; CHECK-NEXT: [[AND:%.*]] = and i32 [[TMP0]], 65535 19; CHECK-NEXT: [[ZEXT:%.*]] = zext i32 [[AND]] to i64 20; CHECK-NEXT: [[ADD4:%.*]] = add nsw i64 [[ZEXT]], -128 21; CHECK-NEXT: [[ICMP5:%.*]] = icmp ult i64 [[ADD4]], -256 22; CHECK-NEXT: [[ICMP6:%.*]] = icmp ult i32 [[AND]], 128 23; CHECK-NEXT: [[OR:%.*]] = or i1 [[ICMP5]], [[ICMP6]] 24; CHECK-NEXT: br i1 [[OR]], label [[BB10]], label [[BB7:%.*]] 25; CHECK: bb7: 26; CHECK-NEXT: [[TMP1:%.*]] = add i32 [[LSR_IV]], 1 27; CHECK-NEXT: call void @foo(i32 [[TMP1]]) 28; CHECK-NEXT: unreachable 29; CHECK: bb10: 30; CHECK-NEXT: [[LSR_IV_NEXT]] = add nsw i32 [[LSR_IV]], 1 31; CHECK-NEXT: [[ICMP12:%.*]] = icmp ult i32 [[LSR_IV_NEXT]], 1210 32; CHECK-NEXT: br i1 [[ICMP12]], label [[BB3]], label [[BB13:%.*]] 33; CHECK: bb13: 34; CHECK-NEXT: ret i64 [[ZEXT]] 35; 36bb2: 37 br label %bb3 38 39bb3: ; preds = %bb10, %bb2 40 %phi = phi i32 [ 0, %bb2 ], [ %add11, %bb10 ] 41 %add = add nuw nsw i32 %phi, 65535 42 %and = and i32 %add, 65535 43 %zext = zext i32 %and to i64 44 %add4 = add nsw i64 %zext, -128 45 %icmp5 = icmp ult i64 %add4, -256 46 %icmp6 = icmp ult i32 %and, 128 47 %or = or i1 %icmp5, %icmp6 48 br i1 %or, label %bb10, label %bb7 49 50bb7: ; preds = %bb3 51 call void @foo(i32 %phi) 52 unreachable 53 54bb10: ; preds = %bb3 55 %add11 = add nuw nsw i32 %phi, 1 56 %icmp12 = icmp ult i32 %phi, 1210 57 br i1 %icmp12, label %bb3, label %bb13 58 59bb13: ; preds = %bb10 60 ret i64 %zext 61 62 uselistorder i32 %phi, { 0, 3, 1, 2 } 63} 64 65declare void @foo(i32) 66