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llvm-project/llvm/test/Transforms/NewGVN/memory-handling.ll
Bjorn Pettersson bcdcf984cc [test][NewGVN] Use '-passes=newgvn' instead of '-basic-aa -newgvn' 
This updates NewGVN test cases that were running
  "opt -basic-aa -newgvn ..."
to run
  "opt -passes=newgvn ..."
instead.

The pipeline will be more similar to what we used to have with
legacy PM by doing it this way. The compatility mode that we've
been using for awhile during transition from legacy PM to new PM,
i.e. using the legacy syntax together with new PM, has resulted in
a pipeline such as
  -passes='function(require<basic-aa>),function(newgvn)'
but running the analysis in a separate function pass manager seem
overly complicated for these tests.

Another difference is that we will get the default aa-pipeline instead
of only running basic-aa. That might be a bit questioned (given that
the tests originally specified basic-aa). The output is however
identival for all the test cases modified here regardless of using
basic-aa or the default aa-pipeline.

This is also another small step towards removal of the support for
using the legacy PM syntax in opt.

Differential Revision: https://reviews.llvm.org/D118340
2022-01-28 13:58:22 +01:00

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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 -passes=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" "frame-pointer"="none" "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" "frame-pointer"="none" "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" "frame-pointer"="none" "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}
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