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196 lines
9.5 KiB
LLVM
196 lines
9.5 KiB
LLVM
;; This test is really dependent on propagating a lot of memory info around, but in the end, not
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;; screwing up a single add.
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; RUN: opt < %s -basicaa -newgvn -S | FileCheck %s
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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%struct.Letter = type { i32, i32, i32, i32 }
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@alPhrase = external local_unnamed_addr global [26 x %struct.Letter], align 16
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@aqMainMask = external local_unnamed_addr global [2 x i64], align 16
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@aqMainSign = external local_unnamed_addr global [2 x i64], align 16
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@cchPhraseLength = external local_unnamed_addr global i32, align 4
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@auGlobalFrequency = external local_unnamed_addr global [26 x i32], align 16
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@.str.7 = external hidden unnamed_addr constant [28 x i8], align 1
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; Function Attrs: nounwind uwtable
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declare void @Fatal(i8*, i32) local_unnamed_addr #0
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; Function Attrs: nounwind readnone
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declare i16** @__ctype_b_loc() local_unnamed_addr #1
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; Function Attrs: nounwind uwtable
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define void @BuildMask(i8* nocapture readonly) local_unnamed_addr #0 {
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tail call void @llvm.memset.p0i8.i64(i8* bitcast ([26 x %struct.Letter]* @alPhrase to i8*), i8 0, i64 416, i32 16, i1 false)
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tail call void @llvm.memset.p0i8.i64(i8* bitcast ([2 x i64]* @aqMainMask to i8*), i8 0, i64 16, i32 16, i1 false)
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tail call void @llvm.memset.p0i8.i64(i8* bitcast ([2 x i64]* @aqMainSign to i8*), i8 0, i64 16, i32 16, i1 false)
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br label %.sink.split
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.sink.split: ; preds = %14, %1
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%.0 = phi i8* [ %0, %1 ], [ %.lcssa67, %14 ]
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%.sink = phi i32 [ 0, %1 ], [ %23, %14 ]
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store i32 %.sink, i32* @cchPhraseLength, align 4, !tbaa !1
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br label %2
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; <label>:2: ; preds = %6, %.sink.split
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%.1 = phi i8* [ %.0, %.sink.split ], [ %3, %6 ]
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%3 = getelementptr inbounds i8, i8* %.1, i64 1
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%4 = load i8, i8* %.1, align 1, !tbaa !5
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%5 = icmp eq i8 %4, 0
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br i1 %5, label %.preheader.preheader, label %6
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.preheader.preheader: ; preds = %2
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br label %.preheader
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; <label>:6: ; preds = %2
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%7 = tail call i16** @__ctype_b_loc() #4
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%8 = load i16*, i16** %7, align 8, !tbaa !6
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%9 = sext i8 %4 to i64
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%10 = getelementptr inbounds i16, i16* %8, i64 %9
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%11 = load i16, i16* %10, align 2, !tbaa !8
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%12 = and i16 %11, 1024
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%13 = icmp eq i16 %12, 0
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br i1 %13, label %2, label %14
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; <label>:14: ; preds = %6
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%.lcssa67 = phi i8* [ %3, %6 ]
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%.lcssa65 = phi i8 [ %4, %6 ]
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%15 = sext i8 %.lcssa65 to i32
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%16 = tail call i32 @tolower(i32 %15) #5
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%17 = add nsw i32 %16, -97
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%18 = sext i32 %17 to i64
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%19 = getelementptr inbounds [26 x %struct.Letter], [26 x %struct.Letter]* @alPhrase, i64 0, i64 %18, i32 0
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%20 = load i32, i32* %19, align 16, !tbaa !10
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%21 = add i32 %20, 1
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store i32 %21, i32* %19, align 16, !tbaa !10
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%22 = load i32, i32* @cchPhraseLength, align 4, !tbaa !1
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%23 = add nsw i32 %22, 1
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br label %.sink.split
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.preheader: ; preds = %58, %.preheader.preheader
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%indvars.iv = phi i64 [ 0, %.preheader.preheader ], [ %indvars.iv.next, %58 ]
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%.04961 = phi i32 [ %.2, %58 ], [ 0, %.preheader.preheader ]
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%.05160 = phi i32 [ %.253, %58 ], [ 0, %.preheader.preheader ]
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%24 = getelementptr inbounds [26 x %struct.Letter], [26 x %struct.Letter]* @alPhrase, i64 0, i64 %indvars.iv, i32 0
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%25 = load i32, i32* %24, align 16, !tbaa !10
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%26 = icmp eq i32 %25, 0
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%27 = getelementptr inbounds [26 x i32], [26 x i32]* @auGlobalFrequency, i64 0, i64 %indvars.iv
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br i1 %26, label %28, label %29
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; <label>:28: ; preds = %.preheader
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store i32 -1, i32* %27, align 4, !tbaa !1
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br label %58
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; <label>:29: ; preds = %.preheader
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store i32 0, i32* %27, align 4, !tbaa !1
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%30 = zext i32 %25 to i64
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br i1 false, label %._crit_edge, label %.lr.ph.preheader
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.lr.ph.preheader: ; preds = %29
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br label %.lr.ph
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.lr.ph: ; preds = %.lr.ph, %.lr.ph.preheader
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%.04658 = phi i64 [ %32, %.lr.ph ], [ 1, %.lr.ph.preheader ]
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%.04857 = phi i32 [ %31, %.lr.ph ], [ 1, %.lr.ph.preheader ]
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%31 = add nuw nsw i32 %.04857, 1
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%32 = shl i64 %.04658, 1
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%33 = icmp ult i64 %30, %32
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br i1 %33, label %._crit_edge.loopexit, label %.lr.ph
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._crit_edge.loopexit: ; preds = %.lr.ph
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%.lcssa63 = phi i32 [ %31, %.lr.ph ]
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%.lcssa = phi i64 [ %32, %.lr.ph ]
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br label %._crit_edge
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._crit_edge: ; preds = %._crit_edge.loopexit, %29
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%.048.lcssa = phi i32 [ 1, %29 ], [ %.lcssa63, %._crit_edge.loopexit ]
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%.046.lcssa = phi i64 [ 1, %29 ], [ %.lcssa, %._crit_edge.loopexit ]
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%34 = add nsw i32 %.048.lcssa, %.04961
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%35 = icmp ugt i32 %34, 64
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br i1 %35, label %36, label %40
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; <label>:36: ; preds = %._crit_edge
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; This testcase essentially comes down to this little add.
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; If we screw up the revisitation of the users of store of %sink above
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; we will end up propagating and simplifying this to 1 in the final output
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; because we keep an optimistic assumption we should not.
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; CHECK: add i32 %.05160, 1
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%37 = add i32 %.05160, 1
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%38 = icmp ugt i32 %37, 1
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br i1 %38, label %39, label %40
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; <label>:39: ; preds = %36
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tail call void @Fatal(i8* getelementptr inbounds ([28 x i8], [28 x i8]* @.str.7, i64 0, i64 0), i32 0)
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br label %40
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; <label>:40: ; preds = %39, %36, %._crit_edge
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%.152 = phi i32 [ %.05160, %._crit_edge ], [ %37, %39 ], [ %37, %36 ]
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%.150 = phi i32 [ %.04961, %._crit_edge ], [ 0, %39 ], [ 0, %36 ]
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%41 = add i64 %.046.lcssa, 4294967295
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%42 = trunc i64 %41 to i32
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%43 = getelementptr inbounds [26 x %struct.Letter], [26 x %struct.Letter]* @alPhrase, i64 0, i64 %indvars.iv, i32 2
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store i32 %42, i32* %43, align 8, !tbaa !12
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%44 = zext i32 %.150 to i64
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%.046. = shl i64 %.046.lcssa, %44
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%45 = zext i32 %.152 to i64
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%46 = getelementptr inbounds [2 x i64], [2 x i64]* @aqMainSign, i64 0, i64 %45
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%47 = load i64, i64* %46, align 8, !tbaa !13
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%48 = or i64 %47, %.046.
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store i64 %48, i64* %46, align 8, !tbaa !13
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%49 = load i32, i32* %24, align 16, !tbaa !10
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%50 = zext i32 %49 to i64
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%51 = shl i64 %50, %44
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%52 = getelementptr inbounds [2 x i64], [2 x i64]* @aqMainMask, i64 0, i64 %45
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%53 = load i64, i64* %52, align 8, !tbaa !13
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%54 = or i64 %51, %53
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store i64 %54, i64* %52, align 8, !tbaa !13
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%55 = getelementptr inbounds [26 x %struct.Letter], [26 x %struct.Letter]* @alPhrase, i64 0, i64 %indvars.iv, i32 1
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store i32 %.150, i32* %55, align 4, !tbaa !15
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%56 = getelementptr inbounds [26 x %struct.Letter], [26 x %struct.Letter]* @alPhrase, i64 0, i64 %indvars.iv, i32 3
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store i32 %.152, i32* %56, align 4, !tbaa !16
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%57 = add nsw i32 %.150, %.048.lcssa
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br label %58
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; <label>:58: ; preds = %40, %28
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%.253 = phi i32 [ %.05160, %28 ], [ %.152, %40 ]
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%.2 = phi i32 [ %.04961, %28 ], [ %57, %40 ]
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%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
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%exitcond = icmp ne i64 %indvars.iv.next, 26
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br i1 %exitcond, label %.preheader, label %59
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; <label>:59: ; preds = %58
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ret void
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}
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; Function Attrs: argmemonly nounwind
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declare void @llvm.memset.p0i8.i64(i8* nocapture writeonly, i8, i64, i32, i1) #2
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; Function Attrs: inlinehint nounwind readonly uwtable
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declare i32 @tolower(i32) local_unnamed_addr #3
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attributes #0 = { nounwind uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #1 = { nounwind readnone "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #2 = { argmemonly nounwind }
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attributes #3 = { inlinehint nounwind readonly uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #4 = { nounwind readnone }
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attributes #5 = { nounwind readonly }
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!llvm.ident = !{!0}
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!0 = !{!"clang version 4.0.0 (http://llvm.org/git/clang.git 9b9db7fa41a1905899dbcbcc6cbdd05d2511da8e) (/Users/dannyb/sources/llvm-clean a3908a41623f6ac14ba8c04613d6c64e0544bb5d)"}
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!1 = !{!2, !2, i64 0}
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!2 = !{!"int", !3, i64 0}
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!3 = !{!"omnipotent char", !4, i64 0}
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!4 = !{!"Simple C/C++ TBAA"}
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!5 = !{!3, !3, i64 0}
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!6 = !{!7, !7, i64 0}
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!7 = !{!"any pointer", !3, i64 0}
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!8 = !{!9, !9, i64 0}
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!9 = !{!"short", !3, i64 0}
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!10 = !{!11, !2, i64 0}
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!11 = !{!"", !2, i64 0, !2, i64 4, !2, i64 8, !2, i64 12}
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!12 = !{!11, !2, i64 8}
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!13 = !{!14, !14, i64 0}
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!14 = !{!"long", !3, i64 0}
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!15 = !{!11, !2, i64 4}
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!16 = !{!11, !2, i64 12}
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