2012-05-23 22:21:06 +02:00
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; RUN: llc < %s -verify-coalescing
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; PR12927
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target triple = "x86_64-apple-macosx10.8.0"
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; This is a case where removeCopyByCommutingDef() creates an identity copy that
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; joinCopy must then deal with correctly.
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@s = common global i16 0, align 2
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@g1 = common global i32 0, align 4
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@g2 = common global i32 0, align 4
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@g0 = common global i32 0, align 4
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define void @func() nounwind uwtable ssp {
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for.body.lr.ph:
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2013-04-30 19:52:57 +02:00
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%0 = load i32* @g2, align 4
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2012-05-23 22:21:06 +02:00
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%tobool6 = icmp eq i32 %0, 0
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%s.promoted = load i16* @s, align 2
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2013-04-30 19:52:57 +02:00
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%.pre = load i32* @g1, align 4
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2012-05-23 22:21:06 +02:00
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br i1 %tobool6, label %for.body.us, label %for.body
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for.body.us: ; preds = %for.body.lr.ph, %for.inc.us
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%1 = phi i32 [ %3, %for.inc.us ], [ %.pre, %for.body.lr.ph ]
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%dec13.us = phi i16 [ %dec12.us, %for.inc.us ], [ %s.promoted, %for.body.lr.ph ]
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%i.011.us = phi i32 [ %inc.us, %for.inc.us ], [ undef, %for.body.lr.ph ]
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%v.010.us = phi i32 [ %phitmp.us, %for.inc.us ], [ 1, %for.body.lr.ph ]
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%tobool1.us = icmp ne i32 %v.010.us, 0
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%2 = zext i1 %tobool1.us to i16
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%lnot.ext.us = xor i16 %2, 1
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%add.us = add i16 %dec13.us, %lnot.ext.us
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%conv3.us = zext i16 %add.us to i32
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%add4.us = sub i32 0, %1
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%tobool5.us = icmp eq i32 %conv3.us, %add4.us
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br i1 %tobool5.us, label %for.inc.us, label %if.then7.us
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for.inc.us: ; preds = %cond.end.us, %for.body.us
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%3 = phi i32 [ %1, %for.body.us ], [ %4, %cond.end.us ]
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%dec12.us = phi i16 [ %add.us, %for.body.us ], [ %dec.us, %cond.end.us ]
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%inc.us = add i32 %i.011.us, 1
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%phitmp.us = udiv i32 %v.010.us, 12
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%tobool.us = icmp eq i32 %inc.us, 0
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br i1 %tobool.us, label %for.end, label %for.body.us
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cond.end.us: ; preds = %if.then7.us, %cond.false.us
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%4 = phi i32 [ 0, %cond.false.us ], [ %1, %if.then7.us ]
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%cond.us = phi i32 [ 0, %cond.false.us ], [ %v.010.us, %if.then7.us ]
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2013-04-30 19:52:57 +02:00
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store i32 %cond.us, i32* @g0, align 4
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2012-05-23 22:21:06 +02:00
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br label %for.inc.us
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cond.false.us: ; preds = %if.then7.us
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2013-04-30 19:52:57 +02:00
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store i32 0, i32* @g1, align 4
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2012-05-23 22:21:06 +02:00
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br label %cond.end.us
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if.then7.us: ; preds = %for.body.us
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%dec.us = add i16 %add.us, -1
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br i1 %tobool1.us, label %cond.end.us, label %cond.false.us
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for.body: ; preds = %for.body.lr.ph, %for.body
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%dec13 = phi i16 [ %dec12, %for.body ], [ %s.promoted, %for.body.lr.ph ]
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%i.011 = phi i32 [ %inc, %for.body ], [ undef, %for.body.lr.ph ]
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%v.010 = phi i32 [ %phitmp, %for.body ], [ 1, %for.body.lr.ph ]
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%tobool1 = icmp eq i32 %v.010, 0
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%lnot.ext = zext i1 %tobool1 to i16
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%add = add i16 %dec13, %lnot.ext
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%conv3 = zext i16 %add to i32
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%add4 = sub i32 0, %.pre
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%not.tobool5 = icmp ne i32 %conv3, %add4
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%dec = sext i1 %not.tobool5 to i16
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%dec12 = add i16 %add, %dec
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%inc = add i32 %i.011, 1
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%phitmp = udiv i32 %v.010, 12
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%tobool = icmp eq i32 %inc, 0
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br i1 %tobool, label %for.end, label %for.body
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for.end: ; preds = %for.inc.us, %for.body
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%dec12.lcssa = phi i16 [ %dec12.us, %for.inc.us ], [ %dec12, %for.body ]
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store i16 %dec12.lcssa, i16* @s, align 2
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ret void
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}
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