hanchenye-llvm-project/polly/test/ScopDetectionDiagnostics/ReportNonAffineAccess-01.ll

; RUN: opt %loadPolly -pass-remarks-missed="polly-detect" -polly-detect-track-failures -polly-detect -analyze < %s 2>&1| FileCheck %s

; void f(int A[]) {
;   for(int i=0; i<42; ++i)
;     A[i*i] = 0;
; }


; CHECK: remark: ReportNonAffineAccess-01.c:2:7: The following errors keep this region from being a Scop.
; CHECK: remark: ReportNonAffineAccess-01.c:3:5: The array subscript of "A" is not affine
; CHECK: remark: ReportNonAffineAccess-01.c:3:5: Invalid Scop candidate ends here.

target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

define void @f(i32* %A) {
entry:
  br label %entry.split

entry.split:                                      ; preds = %entry
  tail call void @llvm.dbg.value(metadata !{i32* %A}, i64 0, metadata !13), !dbg !14
  tail call void @llvm.dbg.value(metadata !15, i64 0, metadata !16), !dbg !18
  br label %for.body, !dbg !19

for.body:                                         ; preds = %entry.split, %for.body
  %0 = phi i32 [ 0, %entry.split ], [ %1, %for.body ], !dbg !20
  %mul = mul nsw i32 %0, %0, !dbg !20
  %idxprom1 = zext i32 %mul to i64, !dbg !20
  %arrayidx = getelementptr inbounds i32* %A, i64 %idxprom1, !dbg !20
  store i32 0, i32* %arrayidx, align 4, !dbg !20
  %1 = add nsw i32 %0, 1, !dbg !21
  tail call void @llvm.dbg.value(metadata !{i32 %1}, i64 0, metadata !16), !dbg !18
  %exitcond = icmp ne i32 %1, 42, !dbg !19
  br i1 %exitcond, label %for.body, label %for.end, !dbg !19

for.end:                                          ; preds = %for.body
  ret void, !dbg !22
}

declare void @llvm.dbg.declare(metadata, metadata)

declare void @llvm.dbg.value(metadata, i64, metadata)

attributes #0 = { nounwind uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #1 = { nounwind readnone }

!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!10, !11}
!llvm.ident = !{!12}

!0 = metadata !{metadata !"0x11\0012\00clang version 3.6.0 \000\00\000\00\001", metadata !1, metadata !2, metadata !2, metadata !3, metadata !2, metadata !2} ; [ DW_TAG_compile_unit ] [test/ScopDetectionDiagnostic/ReportNonAffineAccess-01.c] [DW_LANG_C99]
!1 = metadata !{metadata !"ReportNonAffineAccess-01.c", metadata !"test/ScopDetectionDiagnostic/"}
!2 = metadata !{}
!3 = metadata !{metadata !4}
!4 = metadata !{metadata !"0x2e\00f\00f\00\001\000\001\000\006\00256\000\001", metadata !1, metadata !5, metadata !6, null, void (i32*)* @f, null, null, metadata !2} ; [ DW_TAG_subprogram ] [line 1] [def] [f]
!5 = metadata !{metadata !"0x29", metadata !1}          ; [ DW_TAG_file_type ] [test/ScopDetectionDiagnostic/ReportNonAffineAccess-01.c]
!6 = metadata !{metadata !"0x15\00\000\000\000\000\000\000", i32 0, null, null, metadata !7, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
!7 = metadata !{null, metadata !8}
!8 = metadata !{metadata !"0xf\00\000\0064\0064\000\000", null, null, metadata !9} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [from int]
!9 = metadata !{metadata !"0x24\00int\000\0032\0032\000\000\005", null, null} ; [ DW_TAG_base_type ] [int] [line 0, size 32, align 32, offset 0, enc DW_ATE_signed]
!10 = metadata !{i32 2, metadata !"Dwarf Version", i32 4}
!11 = metadata !{i32 2, metadata !"Debug Info Version", i32 2}
!12 = metadata !{metadata !"clang version 3.6.0 "}
!13 = metadata !{metadata !"0x101\00A\0016777217\000", metadata !4, metadata !5, metadata !8} ; [ DW_TAG_arg_variable ] [A] [line 1]
!14 = metadata !{i32 1, i32 12, metadata !4, null}
!15 = metadata !{i32 0}
!16 = metadata !{metadata !"0x100\00i\002\000", metadata !17, metadata !5, metadata !9} ; [ DW_TAG_auto_variable ] [i] [line 2]
!17 = metadata !{metadata !"0xb\002\003\000", metadata !1, metadata !4} ; [ DW_TAG_lexical_block ] [test/ScopDetectionDiagnostic/ReportNonAffineAccess-01.c]
!18 = metadata !{i32 2, i32 11, metadata !17, null}
!19 = metadata !{i32 2, i32 7, metadata !17, null}
!20 = metadata !{i32 3, i32 5, metadata !17, null}
!21 = metadata !{i32 2, i32 22, metadata !17, null}
!22 = metadata !{i32 4, i32 1, metadata !4, null}