1*9880d681SAndroid Build Coastguard Worker; RUN: llc < %s -o - | FileCheck %s 2*9880d681SAndroid Build Coastguard Workertarget datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128" 3*9880d681SAndroid Build Coastguard Workertarget triple = "x86_64-apple-darwin9" 4*9880d681SAndroid Build Coastguard Worker 5*9880d681SAndroid Build Coastguard Worker; The comparison happens before the relevant use, but it can still be rewritten 6*9880d681SAndroid Build Coastguard Worker; to compare with zero. 7*9880d681SAndroid Build Coastguard Worker 8*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: foo: 9*9880d681SAndroid Build Coastguard Worker; CHECK: align 10*9880d681SAndroid Build Coastguard Worker; CHECK: incl %eax 11*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: decl %ecx 12*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: jne 13*9880d681SAndroid Build Coastguard Worker 14*9880d681SAndroid Build Coastguard Workerdefine void @foo() nounwind { 15*9880d681SAndroid Build Coastguard Workerentry: 16*9880d681SAndroid Build Coastguard Worker br label %loop 17*9880d681SAndroid Build Coastguard Worker 18*9880d681SAndroid Build Coastguard Workerloop: 19*9880d681SAndroid Build Coastguard Worker %indvar = phi i32 [ 0, %entry ], [ %i.2.0.us1534, %loop ] ; <i32> [#uses=1] 20*9880d681SAndroid Build Coastguard Worker %i.2.0.us1534 = add i32 %indvar, 1 ; <i32> [#uses=3] 21*9880d681SAndroid Build Coastguard Worker %tmp611.us1535 = icmp eq i32 %i.2.0.us1534, 4 ; <i1> [#uses=2] 22*9880d681SAndroid Build Coastguard Worker %tmp623.us1538 = select i1 %tmp611.us1535, i32 6, i32 0 ; <i32> [#uses=0] 23*9880d681SAndroid Build Coastguard Worker %tmp628.us1540 = shl i32 %i.2.0.us1534, 1 ; <i32> [#uses=1] 24*9880d681SAndroid Build Coastguard Worker %tmp645646647.us1547 = sext i32 %tmp628.us1540 to i64 ; <i64> [#uses=0] 25*9880d681SAndroid Build Coastguard Worker br i1 %tmp611.us1535, label %exit, label %loop 26*9880d681SAndroid Build Coastguard Worker 27*9880d681SAndroid Build Coastguard Workerexit: 28*9880d681SAndroid Build Coastguard Worker ret void 29*9880d681SAndroid Build Coastguard Worker} 30