Speculatively revert r289925, see PR31407

llvm-svn: 289944

diff --git a/llvm/lib/MC/MCDwarf.cpp b/llvm/lib/MC/MCDwarf.cpp
index 5e4230a..a7551a3 100644 (file)
--- a/llvm/lib/MC/MCDwarf.cpp
+++ b/llvm/lib/MC/MCDwarf.cpp
@@ -263,8 +263,8 @@ MCDwarfLineTableHeader::Emit(MCStreamer *MCOS, MCDwarfLineTableParams Params,
   emitAbsValue(*MCOS,
                MakeStartMinusEndExpr(*MCOS, *LineStartSym, *LineEndSym, 4), 4);
 
-  // Next 2 bytes is the Version.
-  MCOS->EmitIntValue(context.getDwarfVersion(), 2);
+  // Next 2 bytes is the Version, which is Dwarf 2.
+  MCOS->EmitIntValue(2, 2);
 
   // Create a symbol for the end of the prologue (to be set when we get there).
   MCSymbol *ProEndSym = context.createTempSymbol(); // Lprologue_end
@@ -279,11 +279,6 @@ MCDwarfLineTableHeader::Emit(MCStreamer *MCOS, MCDwarfLineTableParams Params,
 
   // Parameters of the state machine, are next.
   MCOS->EmitIntValue(context.getAsmInfo()->getMinInstAlignment(), 1);
-  // maximum_operations_per_instruction 
-  // For non-VLIW architectures this field is always 1.
-  // FIXME: VLIW architectures need to update this field accordingly.
-  if (context.getDwarfVersion() >= 4)
-    MCOS->EmitIntValue(1, 1);
   MCOS->EmitIntValue(DWARF2_LINE_DEFAULT_IS_STMT, 1);
   MCOS->EmitIntValue(Params.DWARF2LineBase, 1);
   MCOS->EmitIntValue(Params.DWARF2LineRange, 1);

diff --git a/llvm/test/DebugInfo/AArch64/line-header.ll b/llvm/test/DebugInfo/AArch64/line-header.ll
index 37ca7f6..38d06f2 100644 (file)
--- a/llvm/test/DebugInfo/AArch64/line-header.ll
+++ b/llvm/test/DebugInfo/AArch64/line-header.ll
@@ -3,4 +3,4 @@
 
 ; check line table length is correctly calculated for both big and little endian
 CHECK-LABEL: .debug_line contents:
-CHECK: total_length: 0x0000003f
+CHECK: total_length: 0x0000003e

diff --git a/llvm/test/DebugInfo/Generic/empty.ll b/llvm/test/DebugInfo/Generic/empty.ll
index 1b22867..82faeca 100644 (file)
--- a/llvm/test/DebugInfo/Generic/empty.ll
+++ b/llvm/test/DebugInfo/Generic/empty.ll
@@ -9,7 +9,7 @@
 ; Expect no line table entry since there are no functions and file references in this compile unit
 ; CHECK: .debug_line contents:
 ; CHECK: Line table prologue:
-; CHECK: total_length: 0x0000001a
+; CHECK: total_length: 0x00000019
 ; CHECK-NOT: file_names[
 
 ; CHECK: .debug_pubnames contents:

diff --git a/llvm/test/DebugInfo/X86/debug-line-version.s b/llvm/test/DebugInfo/X86/debug-line-version.s
deleted file mode 100644 (file)
index 2d5fceb..0000000
--- a/llvm/test/DebugInfo/X86/debug-line-version.s
+++ /dev/null
@@ -1,39 +0,0 @@
-// RUN: llvm-mc -dwarf-version 2 -triple  i686-pc-linux-gnu %s -filetype=obj -o - | llvm-readobj -r -s -sd | FileCheck --check-prefixes=DWARF,DWARF2 %s
-// RUN: llvm-mc -dwarf-version 3 -triple  i686-pc-linux-gnu %s -filetype=obj -o - | llvm-readobj -r -s -sd | FileCheck --check-prefixes=DWARF,DWARF3 %s
-// RUN: llvm-mc -dwarf-version 4 -triple  i686-pc-linux-gnu %s -filetype=obj -o - | llvm-readobj -r -s -sd | FileCheck --check-prefixes=DWARF,DWARF4 %s
-
-// DWARF:    Name: .debug_line (11)
-// DWARF-NEXT:    Type: SHT_PROGBITS (0x1)
-// DWARF-NEXT:    Flags [ (0x0)
-// DWARF-NEXT:    ]
-// DWARF-NEXT:    Address: 0x0
-// DWARF-NEXT:    Offset: 0x35
-// DWARF2-NEXT:    Size: 51
-// DWARF3-NEXT:    Size: 51
-// DWARF4-NEXT:    Size: 52
-// DWARF-NEXT:    Link: 0
-// DWARF-NEXT:    Info: 0
-// DWARF-NEXT:    AddressAlignment: 1
-// DWARF-NEXT:    EntrySize: 0
-// DWARF2-NEXT:    SectionData (
-// DWARF2-NEXT:      0000: 2F000000 02001A00 00000101 FB0E0D00  |/...............|
-// DWARF2-NEXT:      0010: 01010101 00000001 00000100 666F6F00  |............foo.|
-// DWARF2-NEXT:      0020: 00000000 00050200 00000003 3F010201  |............?...|
-// DWARF2-NEXT:      0030: 000101                               |...|
-// DWARF2-NEXT:    )
-// DWARF3-NEXT:    SectionData (
-// DWARF3-NEXT:      0000: 2F000000 03001A00 00000101 FB0E0D00  |/...............|
-// DWARF3-NEXT:      0010: 01010101 00000001 00000100 666F6F00  |............foo.|
-// DWARF3-NEXT:      0020: 00000000 00050200 00000003 3F010201  |............?...|
-// DWARF3-NEXT:      0030: 000101                               |...|
-// DWARF3-NEXT:    )
-// DWARF4-NEXT:    SectionData (
-// DWARF4-NEXT:      0000: 30000000 04001B00 00000101 01FB0E0D  |0...............|
-// DWARF4-NEXT:      0010: 00010101 01000000 01000001 00666F6F  |.............foo|
-// DWARF4-NEXT:      0020: 00000000 00000502 00000000 033F0102  |.............?..|
-// DWARF4-NEXT:      0030: 01000101                             |....|
-// DWARF4-NEXT:    )
-
-        .file   1 "foo"
-        .loc    1 64 0
-        nop

diff --git a/llvm/test/DebugInfo/X86/empty.ll b/llvm/test/DebugInfo/X86/empty.ll
index 6506f55..e156e3b 100644 (file)
--- a/llvm/test/DebugInfo/X86/empty.ll
+++ b/llvm/test/DebugInfo/X86/empty.ll
@@ -4,7 +4,7 @@
 ; Expect no line table entry since there are no functions and file references in this compile unit
 ; CHECK: .debug_line contents:
 ; CHECK: Line table prologue:
-; CHECK: total_length: 0x0000001a
+; CHECK: total_length: 0x00000019
 ; CHECK-NOT: file_names[
 
 ; CHECK: .debug_pubnames contents:

diff --git a/llvm/test/DebugInfo/X86/stmt-list-multiple-compile-units.ll b/llvm/test/DebugInfo/X86/stmt-list-multiple-compile-units.ll
index a60725f..527f577 100644 (file)
--- a/llvm/test/DebugInfo/X86/stmt-list-multiple-compile-units.ll
+++ b/llvm/test/DebugInfo/X86/stmt-list-multiple-compile-units.ll
@@ -15,7 +15,7 @@
 ; CHECK: DW_AT_high_pc [DW_FORM_data4]          (0x00000010)
 
 ; CHECK: DW_TAG_compile_unit
-; CHECK: DW_AT_stmt_list [DW_FORM_sec_offset]   (0x0000003d)
+; CHECK: DW_AT_stmt_list [DW_FORM_sec_offset]   (0x0000003c)
 ; CHECK: DW_AT_low_pc [DW_FORM_addr]            (0x0000000000000010)
 ; CHECK: DW_AT_high_pc [DW_FORM_data4]          (0x00000009)
 ; CHECK: DW_TAG_subprogram
@@ -25,10 +25,10 @@
 
 ; CHECK: .debug_line contents:
 ; CHECK-NEXT: Line table prologue:
-; CHECK-NEXT: total_length: 0x00000039
+; CHECK-NEXT: total_length: 0x00000038
 ; CHECK: file_names[  1]    0 0x00000000 0x00000000 simple.c
 ; CHECK: Line table prologue:
-; CHECK-NEXT: total_length: 0x0000003a
+; CHECK-NEXT: total_length: 0x00000039
 ; CHECK: file_names[  1]    0 0x00000000 0x00000000 simple2.c
 ; CHECK-NOT: file_names
 

diff --git a/llvm/test/MC/ELF/debug-line.s b/llvm/test/MC/ELF/debug-line.s
index c831eb9..072265c 100644 (file)
--- a/llvm/test/MC/ELF/debug-line.s
+++ b/llvm/test/MC/ELF/debug-line.s
@@ -18,17 +18,17 @@
 // CHECK-NEXT:     ]
 // CHECK-NEXT:     Address: 0x0
 // CHECK-NEXT:     Offset:
-// CHECK-NEXT:     Size: 58
+// CHECK-NEXT:     Size: 57
 // CHECK-NEXT:     Link: 0
 // CHECK-NEXT:     Info: 0
 // CHECK-NEXT:     AddressAlignment: 1
 // CHECK-NEXT:     EntrySize: 0
 // CHECK-NEXT:     SectionData (
 
-// CHECK-NEXT:       0000: 36000000 04001D00 00000101 01FB0E0D
-// CHECK-NEXT:       0010: 00010101 01000000 01000001 00666F6F  
-// CHECK-NEXT:       0020: 2E630000 00000000 09020000 00000000  
-// CHECK-NEXT:       0030: 0000154B 21020800 0101              
+// CHECK-NEXT:       0000: 35000000 02001C00 00000101 FB0E0D00
+// CHECK-NEXT:       0010: 01010101 00000001 00000100 666F6F2E
+// CHECK-NEXT:       0020: 63000000 00000009 02000000 00000000
+// CHECK-NEXT:       0030: 00154B21 02080001 01
 // CHECK-NEXT:     )
 // CHECK-NEXT:   }
 

diff --git a/llvm/test/MC/ELF/debug-line2.s b/llvm/test/MC/ELF/debug-line2.s
index 809b976..71b0b16 100644 (file)
--- a/llvm/test/MC/ELF/debug-line2.s
+++ b/llvm/test/MC/ELF/debug-line2.s
@@ -10,16 +10,16 @@
 // CHECK-NEXT:     ]
 // CHECK-NEXT:     Address: 0x0
 // CHECK-NEXT:     Offset:
-// CHECK-NEXT:     Size: 57
+// CHECK-NEXT:     Size: 56
 // CHECK-NEXT:     Link: 0
 // CHECK-NEXT:     Info: 0
 // CHECK-NEXT:     AddressAlignment: 1
 // CHECK-NEXT:     EntrySize: 0
 // CHECK-NEXT:     SectionData (
-// CHECK-NEXT:       0000: 35000000 04001D00 00000101 01FB0E0D  |5...............|
-// CHECK-NEXT:       0010: 00010101 01000000 01000001 00666F6F  |.............foo|
-// CHECK-NEXT:       0020: 2E630000 00000000 09020000 00000000  |.c..............|
-// CHECK-NEXT:       0030: 00000113 02010001 01                 |.........|
+// CHECK-NEXT:       0000: 34000000 02001C00 00000101 FB0E0D00
+// CHECK-NEXT:       0010: 01010101 00000001 00000100 666F6F2E
+// CHECK-NEXT:       0020: 63000000 00000009 02000000 00000000
+// CHECK-NEXT:       0030: 00011302 01000101
 // CHECK-NEXT:     )
 // CHECK-NEXT:   }
 

diff --git a/llvm/test/MC/ELF/debug-loc.s b/llvm/test/MC/ELF/debug-loc.s
index 21eac60..4f14872 100644 (file)
--- a/llvm/test/MC/ELF/debug-loc.s
+++ b/llvm/test/MC/ELF/debug-loc.s
@@ -15,7 +15,7 @@
 // CHECK-NEXT:     ]
 // CHECK-NEXT:     Address: 0x0
 // CHECK-NEXT:     Offset:
-// CHECK-NEXT:     Size: 62
+// CHECK-NEXT:     Size: 61
 // CHECK-NEXT:     Link: 0
 // CHECK-NEXT:     Info: 0
 // CHECK-NEXT:     AddressAlignment: 1

diff --git a/llvm/test/MC/ELF/discriminator.s b/llvm/test/MC/ELF/discriminator.s
index 9c72021..75e4e86 100644 (file)
--- a/llvm/test/MC/ELF/discriminator.s
+++ b/llvm/test/MC/ELF/discriminator.s
@@ -53,7 +53,7 @@ foo:
 
 # CHECK:      Relocations [
 # CHECK:        Section ({{[^ ]+}}) .rel.debug_line {
-# CHECK-NEXT:     0x2E R_386_32 .text 0x0
+# CHECK-NEXT:     0x2D R_386_32 .text 0x0
 # CHECK-NEXT:   }
 
 # DWARF-DUMP: Address            Line   Column File   ISA Discriminator Flags

diff --git a/llvm/test/MC/ELF/empty-dwarf-lines.s b/llvm/test/MC/ELF/empty-dwarf-lines.s
index 3b14fe0..1930570 100644 (file)
--- a/llvm/test/MC/ELF/empty-dwarf-lines.s
+++ b/llvm/test/MC/ELF/empty-dwarf-lines.s
@@ -15,7 +15,7 @@ c:
 // CHECK-NEXT:     ]
 // CHECK-NEXT:     Address: 0x0
 // CHECK-NEXT:     Offset: 0x44
-// CHECK-NEXT:     Size: 40
+// CHECK-NEXT:     Size: 39
 // CHECK-NEXT:     Link: 0
 // CHECK-NEXT:     Info: 0
 // CHECK-NEXT:     AddressAlignment: 1

diff --git a/llvm/test/MC/MachO/file.s b/llvm/test/MC/MachO/file.s
index 40f8c4a..108e3bb 100644 (file)
--- a/llvm/test/MC/MachO/file.s
+++ b/llvm/test/MC/MachO/file.s
@@ -8,7 +8,7 @@
 // CHECK-NEXT:    Name: __debug_line
 // CHECK-NEXT:    Segment: __DWARF
 // CHECK-NEXT:    Address: 0x1
-// CHECK-NEXT:    Size: 0x29
+// CHECK-NEXT:    Size: 0x28
 // CHECK-NEXT:    Offset: 237
 // CHECK-NEXT:    Alignment: 0
 // CHECK-NEXT:    RelocationOffset: 0x0
@@ -20,8 +20,8 @@
 // CHECK-NEXT:    Reserved1: 0x0
 // CHECK-NEXT:    Reserved2: 0x0
 // CHECK-NEXT:    SectionData (
-// CHECK-NEXT:      0000: 25000000 04001F00 00000101 01FB0E0D  |%...............|
-// CHECK-NEXT:      0010: 00010101 01000000 01000001 64697200  |............dir.|
-// CHECK-NEXT:      0020: 00666F6F 00010000 00                 |.foo.....|
+// CHECK-NEXT:      0000: 24000000 02001E00 00000101 FB0E0D00
+// CHECK-NEXT:      0010: 01010101 00000001 00000164 69720000
+// CHECK-NEXT:      0020: 666F6F00 01000000
 // CHECK-NEXT:    )
 // CHECK-NEXT:  }

diff --git a/llvm/test/MC/MachO/gen-dwarf.s b/llvm/test/MC/MachO/gen-dwarf.s
index 2f9a715..22a8e93 100644 (file)
--- a/llvm/test/MC/MachO/gen-dwarf.s
+++ b/llvm/test/MC/MachO/gen-dwarf.s
@@ -89,7 +89,7 @@ _x:   .long 1
 // CHECK: .debug_line contents:
 // CHECK: Line table prologue:
 // We don't check the total_length as it includes lengths of temp paths
-// CHECK:         version: 4
+// CHECK:         version: 2
 // We don't check the prologue_length as it too includes lengths of temp paths
 // CHECK: min_inst_length: 1
 // CHECK: default_is_stmt: 1

diff --git a/llvm/test/MC/MachO/loc.s b/llvm/test/MC/MachO/loc.s
index d38bcf9..c1a2edd 100644 (file)
--- a/llvm/test/MC/MachO/loc.s
+++ b/llvm/test/MC/MachO/loc.s
@@ -9,10 +9,10 @@
 // CHECK:     Name: __debug_line (5F 5F 64 65 62 75 67 5F 6C 69 6E 65 00 00 00 00)
 // CHECK:     Segment: __DWARF (5F 5F 44 57 41 52 46 00 00 00 00 00 00 00 00 00)
 // CHECK:     Address: 0x1
-// CHECK:     Size: 0x34
+// CHECK:     Size: 0x33
 // CHECK:     Offset: 237
 // CHECK:     Alignment: 0
-// CHECK:     RelocationOffset: 0x124
+// CHECK:     RelocationOffset: 0x120
 // CHECK:     RelocationCount: 1
 // CHECK:     Type: 0x0
 // CHECK:     Attributes [ (0x20000)
@@ -21,15 +21,15 @@
 // CHECK:     Reserved1: 0x0
 // CHECK:     Reserved2: 0x0
 // CHECK:     SectionData (
-// CHECK:       0000: 30000000 04001B00 00000101 01FB0E0D  |0...............|
-// CHECK:       0010: 00010101 01000000 01000001 00666F6F  |.............foo|
-// CHECK:       0020: 00000000 00000502 00000000 033F0102  |.............?..|
-// CHECK:       0030: 01000101   
+// CHECK:       0000: 2F000000 02001A00 00000101 FB0E0D00  |/...............|
+// CHECK:       0010: 01010101 00000001 00000100 666F6F00  |............foo.|
+// CHECK:       0020: 00000000 00050200 00000003 3F010201  |............?...|
+// CHECK:       0030: 000101                               |...|
 // CHECK:     )
 // CHECK:   }
 // CHECK: ]
 // CHECK: Relocations [
 // CHECK:   Section __debug_line {
-// CHECK:     0x28 0 2 0 GENERIC_RELOC_VANILLA 0 __text
+// CHECK:     0x27 0 2 0 GENERIC_RELOC_VANILLA 0 __text
 // CHECK:   }
 // CHECK: ]