[llvm] aa71874 - [DebugInfo] [NFCI] Additional test for support of DW_TAG_generic_subrange

[Alok Kumar Sharma via llvm-commits]

Author: Alok Kumar Sharma
Date: 2020-10-29T18:06:17+05:30
New Revision: aa71874f6b9bb9bddca54e9d89d5725dcc77090f

URL: https://github.com/llvm/llvm-project/commit/aa71874f6b9bb9bddca54e9d89d5725dcc77090f
DIFF: https://github.com/llvm/llvm-project/commit/aa71874f6b9bb9bddca54e9d89d5725dcc77090f.diff

LOG: [DebugInfo] [NFCI] Additional test for support of DW_TAG_generic_subrange

As suggested by dstenb, additional test is added to check emission of DW_OP_consts.
Differential Revision: https://reviews.llvm.org/D89218

Added: 
    llvm/test/DebugInfo/X86/dwarfdump-signed_const.ll

Modified: 
    

Removed: 
    


################################################################################
diff  --git a/llvm/test/DebugInfo/X86/dwarfdump-signed_const.ll b/llvm/test/DebugInfo/X86/dwarfdump-signed_const.ll
new file mode 100644
index 000000000000..26f38ece1b56
--- /dev/null
+++ b/llvm/test/DebugInfo/X86/dwarfdump-signed_const.ll
@@ -0,0 +1,68 @@
+;; This test checks whether DW_OP_consts is emitted correctly.
+
+; RUN: llc %s -filetype=obj -o - | llvm-dwarfdump - | FileCheck %s
+
+;; Test whether DW_AT_data_location is generated.
+; CHECK-LABEL:  DW_TAG_array_type
+
+;; Check whether negative values are emitted correctly.
+; CHECK:  DW_AT_rank (DW_OP_consts -1)
+; CHECK:  DW_TAG_generic_subrange
+;; Check whether positive values are emitted correctly.
+; CHECK:  DW_AT_lower_bound     (DW_OP_push_object_address, DW_OP_over, DW_OP_consts +48, DW_OP_mul, DW_OP_plus_uconst 0x50, DW_OP_plus, DW_OP_deref)
+; CHECK:  DW_AT_upper_bound     (DW_OP_push_object_address, DW_OP_over, DW_OP_consts +48, DW_OP_mul, DW_OP_plus_uconst 0x78, DW_OP_plus, DW_OP_deref)
+; CHECK:  DW_AT_byte_stride     (DW_OP_push_object_address, DW_OP_over, DW_OP_consts +48, DW_OP_mul, DW_OP_plus_uconst 0x70, DW_OP_plus, DW_OP_deref, DW_OP_consts +4, DW_OP_mul)
+
+;; Test case is hand written with the help of below testcase
+;;------------------------------
+;;subroutine sub(arank)
+;;  real :: arank(..)
+;;  print *, RANK(arank)
+;;end
+;;------------------------------
+
+; ModuleID = 'dwarfdump-signed_const.ll'
+source_filename = "dwarfdump-signed_const.ll"
+
+define void @sub_(i64* noalias %arank, i64* noalias %"arank$sd") !dbg !5 {
+L.entry:
+  call void @llvm.dbg.value(metadata i64* %arank, metadata !17, metadata !DIExpression()), !dbg !18
+  call void @llvm.dbg.declare(metadata i64* %"arank$sd", metadata !19, metadata !DIExpression()), !dbg !18
+  call void @llvm.dbg.declare(metadata i64* %"arank$sd", metadata !29, metadata !DIExpression()), !dbg !18
+  ret void, !dbg !18
+}
+
+; Function Attrs: nounwind readnone speculatable willreturn
+declare void @llvm.dbg.declare(metadata, metadata, metadata)
+
+; Function Attrs: nounwind readnone speculatable willreturn
+declare void @llvm.dbg.value(metadata, metadata, metadata)
+
+!llvm.module.flags = !{!0, !1}
+!llvm.dbg.cu = !{!2}
+
+!0 = !{i32 2, !"Dwarf Version", i32 4}
+!1 = !{i32 2, !"Debug Info Version", i32 3}
+!2 = distinct !DICompileUnit(language: DW_LANG_Fortran90, file: !3, producer: " F90 Flang - 1.5 2017-05-01", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, retainedTypes: !4, globals: !4, imports: !4)
+!3 = !DIFile(filename: "generic_signed_const.f90", directory: "/dir")
+!4 = !{}
+!5 = distinct !DISubprogram(name: "sub", scope: !2, file: !3, line: 1, type: !6, scopeLine: 1, spFlags: DISPFlagDefinition, unit: !2)
+!6 = !DISubroutineType(types: !7)
+!7 = !{null, !8, !14}
+!8 = !DICompositeType(tag: DW_TAG_array_type, baseType: !9, size: 32, align: 32, elements: !10)
+!9 = !DIBasicType(name: "real", size: 32, align: 32, encoding: DW_ATE_float)
+!10 = !{!11}
+!11 = !DISubrange(lowerBound: 1, upperBound: !12)
+!12 = distinct !DILocalVariable(scope: !5, file: !3, type: !13, flags: DIFlagArtificial)
+!13 = !DIBasicType(name: "integer*8", size: 64, align: 64, encoding: DW_ATE_signed)
+!14 = !DICompositeType(tag: DW_TAG_array_type, baseType: !13, size: 1024, align: 64, elements: !15)
+!15 = !{!16}
+!16 = !DISubrange(lowerBound: 1, upperBound: 16)
+!17 = distinct !DILocalVariable(scope: !5, file: !3, type: !13, flags: DIFlagArtificial)
+!18 = !DILocation(line: 0, scope: !5)
+!19 = !DILocalVariable(name: "arank", arg: 1, scope: !5, file: !3, line: 1, type: !20)
+;; 18446744073709551615 = (unsigned long long) -1 is representation for -1 
+!20 = !DICompositeType(tag: DW_TAG_array_type, baseType: !9, size: 32, align: 32, elements: !21, dataLocation: !17, rank: !DIExpression(DW_OP_consts, 18446744073709551615))
+!21 = !{!22}
+!22 = !DIGenericSubrange(lowerBound: !DIExpression(DW_OP_push_object_address, DW_OP_over, DW_OP_consts, 48, DW_OP_mul, DW_OP_plus_uconst, 80, DW_OP_plus, DW_OP_deref), upperBound: !DIExpression(DW_OP_push_object_address, DW_OP_over, DW_OP_consts, 48, DW_OP_mul, DW_OP_plus_uconst, 120, DW_OP_plus, DW_OP_deref), stride: !DIExpression(DW_OP_push_object_address, DW_OP_over, DW_OP_consts, 48, DW_OP_mul, DW_OP_plus_uconst, 112, DW_OP_plus, DW_OP_deref, DW_OP_consts, 4, DW_OP_mul))
+!29 = !DILocalVariable(arg: 2, scope: !5, file: !3, line: 1, type: !14, flags: DIFlagArtificial)