1*9880d681SAndroid Build Coastguard Worker; RUN: llc < %s -mtriple=x86_64-apple-darwin | FileCheck %s 2*9880d681SAndroid Build Coastguard Worker 3*9880d681SAndroid Build Coastguard Workerdefine void @redundant_add(i64 %n) { 4*9880d681SAndroid Build Coastguard Worker; Check that we don't create two additions for the sadd.with.overflow. 5*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: redundant_add 6*9880d681SAndroid Build Coastguard Worker; CHECK-NOT: leaq 7*9880d681SAndroid Build Coastguard Worker; CHECK-NOT: addq 8*9880d681SAndroid Build Coastguard Worker; CHECK: incq 9*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: jno 10*9880d681SAndroid Build Coastguard Workerentry: 11*9880d681SAndroid Build Coastguard Worker br label %exit_check 12*9880d681SAndroid Build Coastguard Worker 13*9880d681SAndroid Build Coastguard Workerexit_check: 14*9880d681SAndroid Build Coastguard Worker %i = phi i64 [ 0, %entry ], [ %i.next, %loop ] 15*9880d681SAndroid Build Coastguard Worker %c = icmp slt i64 %i, %n 16*9880d681SAndroid Build Coastguard Worker br i1 %c, label %loop, label %exit 17*9880d681SAndroid Build Coastguard Worker 18*9880d681SAndroid Build Coastguard Workerloop: 19*9880d681SAndroid Build Coastguard Worker %i.o = tail call { i64, i1 } @llvm.sadd.with.overflow.i64(i64 %i, i64 1) 20*9880d681SAndroid Build Coastguard Worker %i.next = extractvalue { i64, i1 } %i.o, 0 21*9880d681SAndroid Build Coastguard Worker %o = extractvalue { i64, i1 } %i.o, 1 22*9880d681SAndroid Build Coastguard Worker br i1 %o, label %overflow, label %exit_check 23*9880d681SAndroid Build Coastguard Worker 24*9880d681SAndroid Build Coastguard Workerexit: 25*9880d681SAndroid Build Coastguard Worker ret void 26*9880d681SAndroid Build Coastguard Worker 27*9880d681SAndroid Build Coastguard Workeroverflow: 28*9880d681SAndroid Build Coastguard Worker tail call void @llvm.trap() 29*9880d681SAndroid Build Coastguard Worker unreachable 30*9880d681SAndroid Build Coastguard Worker} 31*9880d681SAndroid Build Coastguard Worker 32*9880d681SAndroid Build Coastguard Workerdeclare { i64, i1 } @llvm.sadd.with.overflow.i64(i64, i64) 33*9880d681SAndroid Build Coastguard Workerdeclare void @llvm.trap() 34*9880d681SAndroid Build Coastguard Worker 35