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llvm-project/llvm/test/Transforms/NewGVN/memory-handling.ll

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;; 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 (http://llvm.org/git/clang.git 9b9db7fa41a1905899dbcbcc6cbdd05d2511da8e) (/Users/dannyb/sources/llvm-clean a3908a41623f6ac14ba8c04613d6c64e0544bb5d)"}
!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}
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