1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py 2; RUN: opt -passes=instcombine -S < %s | FileCheck %s 3target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" 4target triple = "x86_64-unknown-linux-gnu" 5 6declare void @f(i32) 7 8; Do not replace a 'select' with 'or' in 'select - cmp - br' sequence 9define void @test(i32 %len) { 10; CHECK-LABEL: @test( 11; CHECK-NEXT: entry: 12; CHECK-NEXT: [[COND:%.*]] = call i32 @llvm.umin.i32(i32 [[LEN:%.*]], i32 8) 13; CHECK-NEXT: [[CMP11_NOT:%.*]] = icmp eq i32 [[LEN]], 0 14; CHECK-NEXT: br i1 [[CMP11_NOT]], label [[FOR_END:%.*]], label [[FOR_BODY:%.*]] 15; CHECK: for.body: 16; CHECK-NEXT: [[I_02:%.*]] = phi i32 [ [[INC:%.*]], [[FOR_BODY]] ], [ 0, [[ENTRY:%.*]] ] 17; CHECK-NEXT: tail call void @f(i32 [[COND]]) 18; CHECK-NEXT: [[INC]] = add i32 [[I_02]], 1 19; CHECK-NEXT: [[CMP1:%.*]] = icmp ult i32 [[INC]], [[COND]] 20; CHECK-NEXT: br i1 [[CMP1]], label [[FOR_BODY]], label [[FOR_END]] 21; CHECK: for.end: 22; CHECK-NEXT: ret void 23; 24entry: 25 %cmp = icmp ult i32 %len, 8 26 %cond = select i1 %cmp, i32 %len, i32 8 27 %cmp11 = icmp ult i32 0, %cond 28 br i1 %cmp11, label %for.body, label %for.end 29 30for.body: ; preds = %entry, %for.body 31 %i.02 = phi i32 [ %inc, %for.body ], [ 0, %entry ] 32 tail call void @f(i32 %cond) 33 %inc = add i32 %i.02, 1 34 %cmp1 = icmp ult i32 %inc, %cond 35 br i1 %cmp1, label %for.body, label %for.end 36 37for.end: ; preds = %for.body, %entry 38 ret void 39} 40