| ;; This test is really dependent on propagating a lot of memory info around, but in the end, not |
| ;; screwing up a single add. |
| ; RUN: opt < %s -basicaa -newgvn -S | FileCheck %s |
| target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" |
| |
| %struct.Letter = type { i32, i32, i32, i32 } |
| |
| @alPhrase = external local_unnamed_addr global [26 x %struct.Letter], align 16 |
| @aqMainMask = external local_unnamed_addr global [2 x i64], align 16 |
| @aqMainSign = external local_unnamed_addr global [2 x i64], align 16 |
| @cchPhraseLength = external local_unnamed_addr global i32, align 4 |
| @auGlobalFrequency = external local_unnamed_addr global [26 x i32], align 16 |
| @.str.7 = external hidden unnamed_addr constant [28 x i8], align 1 |
| |
| ; Function Attrs: nounwind uwtable |
| declare void @Fatal(i8*, i32) local_unnamed_addr #0 |
| |
| ; Function Attrs: nounwind readnone |
| declare i16** @__ctype_b_loc() local_unnamed_addr #1 |
| |
| ; Function Attrs: nounwind uwtable |
| define void @BuildMask(i8* nocapture readonly) local_unnamed_addr #0 { |
| tail call void @llvm.memset.p0i8.i64(i8* align 16 bitcast ([26 x %struct.Letter]* @alPhrase to i8*), i8 0, i64 416, i1 false) |
| tail call void @llvm.memset.p0i8.i64(i8* align 16 bitcast ([2 x i64]* @aqMainMask to i8*), i8 0, i64 16, i1 false) |
| tail call void @llvm.memset.p0i8.i64(i8* align 16 bitcast ([2 x i64]* @aqMainSign to i8*), i8 0, i64 16, i1 false) |
| br label %.sink.split |
| |
| .sink.split: ; preds = %14, %1 |
| %.0 = phi i8* [ %0, %1 ], [ %.lcssa67, %14 ] |
| %.sink = phi i32 [ 0, %1 ], [ %23, %14 ] |
| store i32 %.sink, i32* @cchPhraseLength, align 4, !tbaa !1 |
| br label %2 |
| |
| ; <label>:2: ; preds = %6, %.sink.split |
| %.1 = phi i8* [ %.0, %.sink.split ], [ %3, %6 ] |
| %3 = getelementptr inbounds i8, i8* %.1, i64 1 |
| %4 = load i8, i8* %.1, align 1, !tbaa !5 |
| %5 = icmp eq i8 %4, 0 |
| br i1 %5, label %.preheader.preheader, label %6 |
| |
| .preheader.preheader: ; preds = %2 |
| br label %.preheader |
| |
| ; <label>:6: ; preds = %2 |
| %7 = tail call i16** @__ctype_b_loc() #4 |
| %8 = load i16*, i16** %7, align 8, !tbaa !6 |
| %9 = sext i8 %4 to i64 |
| %10 = getelementptr inbounds i16, i16* %8, i64 %9 |
| %11 = load i16, i16* %10, align 2, !tbaa !8 |
| %12 = and i16 %11, 1024 |
| %13 = icmp eq i16 %12, 0 |
| br i1 %13, label %2, label %14 |
| |
| ; <label>:14: ; preds = %6 |
| %.lcssa67 = phi i8* [ %3, %6 ] |
| %.lcssa65 = phi i8 [ %4, %6 ] |
| %15 = sext i8 %.lcssa65 to i32 |
| %16 = tail call i32 @tolower(i32 %15) #5 |
| %17 = add nsw i32 %16, -97 |
| %18 = sext i32 %17 to i64 |
| %19 = getelementptr inbounds [26 x %struct.Letter], [26 x %struct.Letter]* @alPhrase, i64 0, i64 %18, i32 0 |
| %20 = load i32, i32* %19, align 16, !tbaa !10 |
| %21 = add i32 %20, 1 |
| store i32 %21, i32* %19, align 16, !tbaa !10 |
| %22 = load i32, i32* @cchPhraseLength, align 4, !tbaa !1 |
| %23 = add nsw i32 %22, 1 |
| br label %.sink.split |
| |
| .preheader: ; preds = %58, %.preheader.preheader |
| %indvars.iv = phi i64 [ 0, %.preheader.preheader ], [ %indvars.iv.next, %58 ] |
| %.04961 = phi i32 [ %.2, %58 ], [ 0, %.preheader.preheader ] |
| %.05160 = phi i32 [ %.253, %58 ], [ 0, %.preheader.preheader ] |
| %24 = getelementptr inbounds [26 x %struct.Letter], [26 x %struct.Letter]* @alPhrase, i64 0, i64 %indvars.iv, i32 0 |
| %25 = load i32, i32* %24, align 16, !tbaa !10 |
| %26 = icmp eq i32 %25, 0 |
| %27 = getelementptr inbounds [26 x i32], [26 x i32]* @auGlobalFrequency, i64 0, i64 %indvars.iv |
| br i1 %26, label %28, label %29 |
| |
| ; <label>:28: ; preds = %.preheader |
| store i32 -1, i32* %27, align 4, !tbaa !1 |
| br label %58 |
| |
| ; <label>:29: ; preds = %.preheader |
| store i32 0, i32* %27, align 4, !tbaa !1 |
| %30 = zext i32 %25 to i64 |
| br i1 false, label %._crit_edge, label %.lr.ph.preheader |
| |
| .lr.ph.preheader: ; preds = %29 |
| br label %.lr.ph |
| |
| .lr.ph: ; preds = %.lr.ph, %.lr.ph.preheader |
| %.04658 = phi i64 [ %32, %.lr.ph ], [ 1, %.lr.ph.preheader ] |
| %.04857 = phi i32 [ %31, %.lr.ph ], [ 1, %.lr.ph.preheader ] |
| %31 = add nuw nsw i32 %.04857, 1 |
| %32 = shl i64 %.04658, 1 |
| %33 = icmp ult i64 %30, %32 |
| br i1 %33, label %._crit_edge.loopexit, label %.lr.ph |
| |
| ._crit_edge.loopexit: ; preds = %.lr.ph |
| %.lcssa63 = phi i32 [ %31, %.lr.ph ] |
| %.lcssa = phi i64 [ %32, %.lr.ph ] |
| br label %._crit_edge |
| |
| ._crit_edge: ; preds = %._crit_edge.loopexit, %29 |
| %.048.lcssa = phi i32 [ 1, %29 ], [ %.lcssa63, %._crit_edge.loopexit ] |
| %.046.lcssa = phi i64 [ 1, %29 ], [ %.lcssa, %._crit_edge.loopexit ] |
| %34 = add nsw i32 %.048.lcssa, %.04961 |
| %35 = icmp ugt i32 %34, 64 |
| br i1 %35, label %36, label %40 |
| |
| ; <label>:36: ; preds = %._crit_edge |
| ; This testcase essentially comes down to this little add. |
| ; If we screw up the revisitation of the users of store of %sink above |
| ; we will end up propagating and simplifying this to 1 in the final output |
| ; because we keep an optimistic assumption we should not. |
| ; CHECK: add i32 %.05160, 1 |
| %37 = add i32 %.05160, 1 |
| %38 = icmp ugt i32 %37, 1 |
| br i1 %38, label %39, label %40 |
| |
| ; <label>:39: ; preds = %36 |
| tail call void @Fatal(i8* getelementptr inbounds ([28 x i8], [28 x i8]* @.str.7, i64 0, i64 0), i32 0) |
| br label %40 |
| |
| ; <label>:40: ; preds = %39, %36, %._crit_edge |
| %.152 = phi i32 [ %.05160, %._crit_edge ], [ %37, %39 ], [ %37, %36 ] |
| %.150 = phi i32 [ %.04961, %._crit_edge ], [ 0, %39 ], [ 0, %36 ] |
| %41 = add i64 %.046.lcssa, 4294967295 |
| %42 = trunc i64 %41 to i32 |
| %43 = getelementptr inbounds [26 x %struct.Letter], [26 x %struct.Letter]* @alPhrase, i64 0, i64 %indvars.iv, i32 2 |
| store i32 %42, i32* %43, align 8, !tbaa !12 |
| %44 = zext i32 %.150 to i64 |
| %.046. = shl i64 %.046.lcssa, %44 |
| %45 = zext i32 %.152 to i64 |
| %46 = getelementptr inbounds [2 x i64], [2 x i64]* @aqMainSign, i64 0, i64 %45 |
| %47 = load i64, i64* %46, align 8, !tbaa !13 |
| %48 = or i64 %47, %.046. |
| store i64 %48, i64* %46, align 8, !tbaa !13 |
| %49 = load i32, i32* %24, align 16, !tbaa !10 |
| %50 = zext i32 %49 to i64 |
| %51 = shl i64 %50, %44 |
| %52 = getelementptr inbounds [2 x i64], [2 x i64]* @aqMainMask, i64 0, i64 %45 |
| %53 = load i64, i64* %52, align 8, !tbaa !13 |
| %54 = or i64 %51, %53 |
| store i64 %54, i64* %52, align 8, !tbaa !13 |
| %55 = getelementptr inbounds [26 x %struct.Letter], [26 x %struct.Letter]* @alPhrase, i64 0, i64 %indvars.iv, i32 1 |
| store i32 %.150, i32* %55, align 4, !tbaa !15 |
| %56 = getelementptr inbounds [26 x %struct.Letter], [26 x %struct.Letter]* @alPhrase, i64 0, i64 %indvars.iv, i32 3 |
| store i32 %.152, i32* %56, align 4, !tbaa !16 |
| %57 = add nsw i32 %.150, %.048.lcssa |
| br label %58 |
| |
| ; <label>:58: ; preds = %40, %28 |
| %.253 = phi i32 [ %.05160, %28 ], [ %.152, %40 ] |
| %.2 = phi i32 [ %.04961, %28 ], [ %57, %40 ] |
| %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 |
| %exitcond = icmp ne i64 %indvars.iv.next, 26 |
| br i1 %exitcond, label %.preheader, label %59 |
| |
| ; <label>:59: ; preds = %58 |
| ret void |
| } |
| |
| ; Function Attrs: argmemonly nounwind |
| declare void @llvm.memset.p0i8.i64(i8* nocapture writeonly, i8, i64, i1) #2 |
| |
| ; Function Attrs: inlinehint nounwind readonly uwtable |
| declare i32 @tolower(i32) local_unnamed_addr #3 |
| |
| 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" } |
| 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" } |
| attributes #2 = { argmemonly nounwind } |
| 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" } |
| attributes #4 = { nounwind readnone } |
| attributes #5 = { nounwind readonly } |
| |
| !llvm.ident = !{!0} |
| |
| !0 = !{!"clang version 4.0.0"} |
| !1 = !{!2, !2, i64 0} |
| !2 = !{!"int", !3, i64 0} |
| !3 = !{!"omnipotent char", !4, i64 0} |
| !4 = !{!"Simple C/C++ TBAA"} |
| !5 = !{!3, !3, i64 0} |
| !6 = !{!7, !7, i64 0} |
| !7 = !{!"any pointer", !3, i64 0} |
| !8 = !{!9, !9, i64 0} |
| !9 = !{!"short", !3, i64 0} |
| !10 = !{!11, !2, i64 0} |
| !11 = !{!"", !2, i64 0, !2, i64 4, !2, i64 8, !2, i64 12} |
| !12 = !{!11, !2, i64 8} |
| !13 = !{!14, !14, i64 0} |
| !14 = !{!"long", !3, i64 0} |
| !15 = !{!11, !2, i64 4} |
| !16 = !{!11, !2, i64 12} |
