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79 lines
3.2 KiB
LLVM
79 lines
3.2 KiB
LLVM
; RUN: llc < %s -mtriple=i386-apple-macosx -mcpu=core2 -mattr=+sse | FileCheck %s
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; PR11940: Do not optimize away movb %al, %ch
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%struct.APInt = type { i64* }
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declare noalias i8* @calloc(i32, i32) nounwind
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define void @bug(%struct.APInt* noalias nocapture sret %agg.result, %struct.APInt* nocapture %this, i32 %rotateAmt) nounwind align 2 {
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entry:
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; CHECK: bug:
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%call = tail call i8* @calloc(i32 1, i32 32)
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%call.i = tail call i8* @calloc(i32 1, i32 32) nounwind
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%0 = bitcast i8* %call.i to i64*
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%rem.i = and i32 %rotateAmt, 63
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%div.i = lshr i32 %rotateAmt, 6
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%cmp.i = icmp eq i32 %rem.i, 0
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br i1 %cmp.i, label %for.cond.preheader.i, label %if.end.i
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for.cond.preheader.i: ; preds = %entry
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%sub.i = sub i32 4, %div.i
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%cmp23.i = icmp eq i32 %div.i, 4
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br i1 %cmp23.i, label %for.body9.lr.ph.i, label %for.body.lr.ph.i
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for.body.lr.ph.i: ; preds = %for.cond.preheader.i
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%pVal.i = getelementptr inbounds %struct.APInt* %this, i32 0, i32 0
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%.pre5.i = load i64** %pVal.i, align 4
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br label %for.body.i
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for.body.i: ; preds = %for.body.i, %for.body.lr.ph.i
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%i.04.i = phi i32 [ 0, %for.body.lr.ph.i ], [ %inc.i, %for.body.i ]
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%add.i = add i32 %i.04.i, %div.i
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%arrayidx.i = getelementptr inbounds i64* %.pre5.i, i32 %add.i
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%1 = load i64* %arrayidx.i, align 4
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%arrayidx3.i = getelementptr inbounds i64* %0, i32 %i.04.i
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store i64 %1, i64* %arrayidx3.i, align 4
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%inc.i = add i32 %i.04.i, 1
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%cmp2.i = icmp ult i32 %inc.i, %sub.i
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br i1 %cmp2.i, label %for.body.i, label %if.end.i
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if.end.i: ; preds = %for.body.i, %entry
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%cmp81.i = icmp eq i32 %div.i, 3
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br i1 %cmp81.i, label %_ZNK5APInt4lshrEj.exit, label %for.body9.lr.ph.i
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for.body9.lr.ph.i: ; preds = %if.end.i, %for.cond.preheader.i
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%sub58.i = sub i32 3, %div.i
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%pVal11.i = getelementptr inbounds %struct.APInt* %this, i32 0, i32 0
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%sh_prom.i = zext i32 %rem.i to i64
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%sub17.i = sub i32 64, %rem.i
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%sh_prom18.i = zext i32 %sub17.i to i64
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%.pre.i = load i64** %pVal11.i, align 4
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br label %for.body9.i
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for.body9.i: ; preds = %for.body9.i, %for.body9.lr.ph.i
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; CHECK: %for.body9.i
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; CHECK: movb
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; CHECK: shrdl
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%i6.02.i = phi i32 [ 0, %for.body9.lr.ph.i ], [ %inc21.i, %for.body9.i ]
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%add10.i = add i32 %i6.02.i, %div.i
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%arrayidx12.i = getelementptr inbounds i64* %.pre.i, i32 %add10.i
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%2 = load i64* %arrayidx12.i, align 4
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%shr.i = lshr i64 %2, %sh_prom.i
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%add14.i = add i32 %add10.i, 1
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%arrayidx16.i = getelementptr inbounds i64* %.pre.i, i32 %add14.i
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%3 = load i64* %arrayidx16.i, align 4
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%shl.i = shl i64 %3, %sh_prom18.i
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%or.i = or i64 %shl.i, %shr.i
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%arrayidx19.i = getelementptr inbounds i64* %0, i32 %i6.02.i
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store i64 %or.i, i64* %arrayidx19.i, align 4
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%inc21.i = add i32 %i6.02.i, 1
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%cmp8.i = icmp ult i32 %inc21.i, %sub58.i
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br i1 %cmp8.i, label %for.body9.i, label %_ZNK5APInt4lshrEj.exit
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_ZNK5APInt4lshrEj.exit: ; preds = %for.body9.i, %if.end.i
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%call.i1 = tail call i8* @calloc(i32 1, i32 32) nounwind
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%4 = getelementptr inbounds %struct.APInt* %agg.result, i32 0, i32 0
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store i64* %0, i64** %4, align 4
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ret void
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}
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