1 ; RUN: llc < %s -verify-coalescing 2 ; PR12927 3 target triple = "x86_64-apple-macosx10.8.0" 4 5 ; This is a case where removeCopyByCommutingDef() creates an identity copy that 6 ; joinCopy must then deal with correctly. 7 8 @s = common global i16 0, align 2 9 @g1 = common global i32 0, align 4 10 @g2 = common global i32 0, align 4 11 @g0 = common global i32 0, align 4 12 13 define void @func() nounwind uwtable ssp { 14 for.body.lr.ph: 15 %0 = load i32, i32* @g2, align 4 16 %tobool6 = icmp eq i32 %0, 0 17 %s.promoted = load i16, i16* @s, align 2 18 %.pre = load i32, i32* @g1, align 4 19 br i1 %tobool6, label %for.body.us, label %for.body 20 21 for.body.us: ; preds = %for.body.lr.ph, %for.inc.us 22 %1 = phi i32 [ %3, %for.inc.us ], [ %.pre, %for.body.lr.ph ] 23 %dec13.us = phi i16 [ %dec12.us, %for.inc.us ], [ %s.promoted, %for.body.lr.ph ] 24 %i.011.us = phi i32 [ %inc.us, %for.inc.us ], [ undef, %for.body.lr.ph ] 25 %v.010.us = phi i32 [ %phitmp.us, %for.inc.us ], [ 1, %for.body.lr.ph ] 26 %tobool1.us = icmp ne i32 %v.010.us, 0 27 %2 = zext i1 %tobool1.us to i16 28 %lnot.ext.us = xor i16 %2, 1 29 %add.us = add i16 %dec13.us, %lnot.ext.us 30 %conv3.us = zext i16 %add.us to i32 31 %add4.us = sub i32 0, %1 32 %tobool5.us = icmp eq i32 %conv3.us, %add4.us 33 br i1 %tobool5.us, label %for.inc.us, label %if.then7.us 34 35 for.inc.us: ; preds = %cond.end.us, %for.body.us 36 %3 = phi i32 [ %1, %for.body.us ], [ %4, %cond.end.us ] 37 %dec12.us = phi i16 [ %add.us, %for.body.us ], [ %dec.us, %cond.end.us ] 38 %inc.us = add i32 %i.011.us, 1 39 %phitmp.us = udiv i32 %v.010.us, 12 40 %tobool.us = icmp eq i32 %inc.us, 0 41 br i1 %tobool.us, label %for.end, label %for.body.us 42 43 cond.end.us: ; preds = %if.then7.us, %cond.false.us 44 %4 = phi i32 [ 0, %cond.false.us ], [ %1, %if.then7.us ] 45 %cond.us = phi i32 [ 0, %cond.false.us ], [ %v.010.us, %if.then7.us ] 46 store i32 %cond.us, i32* @g0, align 4 47 br label %for.inc.us 48 49 cond.false.us: ; preds = %if.then7.us 50 store i32 0, i32* @g1, align 4 51 br label %cond.end.us 52 53 if.then7.us: ; preds = %for.body.us 54 %dec.us = add i16 %add.us, -1 55 br i1 %tobool1.us, label %cond.end.us, label %cond.false.us 56 57 for.body: ; preds = %for.body.lr.ph, %for.body 58 %dec13 = phi i16 [ %dec12, %for.body ], [ %s.promoted, %for.body.lr.ph ] 59 %i.011 = phi i32 [ %inc, %for.body ], [ undef, %for.body.lr.ph ] 60 %v.010 = phi i32 [ %phitmp, %for.body ], [ 1, %for.body.lr.ph ] 61 %tobool1 = icmp eq i32 %v.010, 0 62 %lnot.ext = zext i1 %tobool1 to i16 63 %add = add i16 %dec13, %lnot.ext 64 %conv3 = zext i16 %add to i32 65 %add4 = sub i32 0, %.pre 66 %not.tobool5 = icmp ne i32 %conv3, %add4 67 %dec = sext i1 %not.tobool5 to i16 68 %dec12 = add i16 %add, %dec 69 %inc = add i32 %i.011, 1 70 %phitmp = udiv i32 %v.010, 12 71 %tobool = icmp eq i32 %inc, 0 72 br i1 %tobool, label %for.end, label %for.body 73 74 for.end: ; preds = %for.inc.us, %for.body 75 %dec12.lcssa = phi i16 [ %dec12.us, %for.inc.us ], [ %dec12, %for.body ] 76 store i16 %dec12.lcssa, i16* @s, align 2 77 ret void 78 } 79
