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Emit arange padding with a single directive.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198700 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Benjamin Kramer 2014-01-07 19:28:14 +00:00
parent 6f9a004738
commit 5f9cb7b569
3 changed files with 6 additions and 17 deletions
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8
lib/CodeGen/AsmPrinter/DwarfDebug.cpp
View File

@ -2817,9 +2817,8 @@ void DwarfDebug::emitDebugARanges() {
unsigned TupleSize = PtrSize * 2;
// 7.20 in the Dwarf specs requires the table to be aligned to a tuple.
unsigned Padding = 0;
while (((sizeof(int32_t) + ContentSize + Padding) % TupleSize) != 0)
Padding++;
unsigned Padding =
OffsetToAlignment(sizeof(int32_t) + ContentSize, TupleSize);
ContentSize += Padding;
ContentSize += (List.size() + 1) * TupleSize;
@ -2836,8 +2835,7 @@ void DwarfDebug::emitDebugARanges() {
Asm->OutStreamer.AddComment("Segment Size (in bytes)");
Asm->EmitInt8(0);
for (unsigned n = 0; n < Padding; n++)
Asm->EmitInt8(0xff);
Asm->OutStreamer.EmitFill(Padding, 0xff);
for (unsigned n = 0; n < List.size(); n++) {
const ArangeSpan &Span = List[n];

5
test/DebugInfo/X86/dwarf-aranges.ll
View File

@ -7,10 +7,7 @@
; CHECK-NEXT: .byte 8 # Address Size (in bytes)
; CHECK-NEXT: .byte 0 # Segment Size (in bytes)
; -- alignment --
; CHECK-NEXT: .byte
; CHECK-NEXT: .byte
; CHECK-NEXT: .byte
; CHECK-NEXT: .byte
; CHECK-NEXT: .zero 4,255
; <common symbols> - it should have made one span for each symbol.
; CHECK-NEXT: .quad some_bss

10
test/DebugInfo/X86/multiple-aranges.ll
View File

@ -6,10 +6,7 @@
; CHECK-NEXT: .long .L.debug_info_begin0 # Offset Into Debug Info Section
; CHECK-NEXT: .byte 8 # Address Size (in bytes)
; CHECK-NEXT: .byte 0 # Segment Size (in bytes)
; CHECK-NEXT: .byte 255
; CHECK-NEXT: .byte 255
; CHECK-NEXT: .byte 255
; CHECK-NEXT: .byte 255
; CHECK-NEXT: .zero 4,255
; CHECK-NEXT: .quad kittens
; CHECK-NEXT: .Lset0 = rainbows-kittens
; CHECK-NEXT: .quad .Lset0
@ -22,10 +19,7 @@
; CHECK-NEXT: .long .L.debug_info_begin1 # Offset Into Debug Info Section
; CHECK-NEXT: .byte 8 # Address Size (in bytes)
; CHECK-NEXT: .byte 0 # Segment Size (in bytes)
; CHECK-NEXT: .byte 255
; CHECK-NEXT: .byte 255
; CHECK-NEXT: .byte 255
; CHECK-NEXT: .byte 255
; CHECK-NEXT: .zero 4,255
; CHECK-NEXT: .quad rainbows
; CHECK-NEXT: .Lset1 = .Ldebug_end0-rainbows
; CHECK-NEXT: .quad .Lset1