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-rw-r--r--include/llvm/MC/MCAsmInfo.h7
-rw-r--r--include/llvm/MC/MCSection.h8
-rw-r--r--include/llvm/MC/MCSectionELF.h5
-rw-r--r--lib/CodeGen/AsmPrinter/DwarfPrinter.cpp6
-rw-r--r--lib/MC/MCAsmInfo.cpp1
-rw-r--r--lib/MC/MCAsmInfoCOFF.cpp1
-rw-r--r--lib/Target/ARM/ARMMCAsmInfo.cpp1
-rw-r--r--lib/Target/PowerPC/PPCMCAsmInfo.cpp1
-rw-r--r--lib/Target/Sparc/SparcMCAsmInfo.cpp1
-rw-r--r--lib/Target/X86/X86MCAsmInfo.cpp1
-rw-r--r--lib/Target/XCore/XCoreMCAsmInfo.cpp1
11 files changed, 17 insertions, 16 deletions
diff --git a/include/llvm/MC/MCAsmInfo.h b/include/llvm/MC/MCAsmInfo.h
index d190ea4568..33def86189 100644
--- a/include/llvm/MC/MCAsmInfo.h
+++ b/include/llvm/MC/MCAsmInfo.h
@@ -223,10 +223,6 @@ namespace llvm {
//===--- Dwarf Emission Directives -----------------------------------===//
- /// AbsoluteDebugSectionOffsets - True if we should emit abolute section
- /// offsets for debug information.
- bool AbsoluteDebugSectionOffsets; // Defaults to false.
-
/// HasLEB128 - True if target asm supports leb128 directives.
bool HasLEB128; // Defaults to false.
@@ -385,9 +381,6 @@ namespace llvm {
MCSymbolAttr getProtectedVisibilityAttr() const {
return ProtectedVisibilityAttr;
}
- bool isAbsoluteDebugSectionOffsets() const {
- return AbsoluteDebugSectionOffsets;
- }
bool hasLEB128() const {
return HasLEB128;
}
diff --git a/include/llvm/MC/MCSection.h b/include/llvm/MC/MCSection.h
index 4a1c46ccb9..e9c19fce20 100644
--- a/include/llvm/MC/MCSection.h
+++ b/include/llvm/MC/MCSection.h
@@ -39,6 +39,14 @@ namespace llvm {
virtual void PrintSwitchToSection(const MCAsmInfo &MAI,
raw_ostream &OS) const = 0;
+
+ /// isBaseAddressKnownZero - Return true if we know that this section will
+ /// get a base address of zero. In cases where we know that this is true we
+ /// can emit section offsets as direct references to avoid a subtraction
+ /// from the base of the section, saving a relocation.
+ virtual bool isBaseAddressKnownZero() const {
+ return false;
+ }
};
class MCSectionCOFF : public MCSection {
diff --git a/include/llvm/MC/MCSectionELF.h b/include/llvm/MC/MCSectionELF.h
index cdd2f73b34..e550cd2c11 100644
--- a/include/llvm/MC/MCSectionELF.h
+++ b/include/llvm/MC/MCSectionELF.h
@@ -172,6 +172,11 @@ public:
virtual void PrintSwitchToSection(const MCAsmInfo &MAI,
raw_ostream &OS) const;
+ /// isBaseAddressKnownZero - We know that non-allocatable sections (like
+ /// debug info) have a base of zero.
+ virtual bool isBaseAddressKnownZero() const {
+ return (getFlags() & SHF_ALLOC) == 0;
+ }
/// PrintTargetSpecificSectionFlags - Targets that define their own
/// MCSectionELF subclasses with target specific section flags should
diff --git a/lib/CodeGen/AsmPrinter/DwarfPrinter.cpp b/lib/CodeGen/AsmPrinter/DwarfPrinter.cpp
index 7de6109967..84d47ec449 100644
--- a/lib/CodeGen/AsmPrinter/DwarfPrinter.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfPrinter.cpp
@@ -20,6 +20,7 @@
#include "llvm/MC/MCAsmInfo.h"
#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCExpr.h"
+#include "llvm/MC/MCSection.h"
#include "llvm/MC/MCStreamer.h"
#include "llvm/MC/MCSymbol.h"
#include "llvm/Target/TargetData.h"
@@ -61,15 +62,16 @@ void DwarfPrinter::EmitSectionOffset(const MCSymbol *Label,
// If Label has already been emitted, verify that it is in the same section as
// section label for sanity.
assert((!Label->isInSection() || &Label->getSection() == &Section) &&
- "Section offset using wrong section base for label"); (void)Section;
+ "Section offset using wrong section base for label");
// If the section in question will end up with an address of 0 anyway, we can
// just emit an absolute reference to save a relocation.
- if (MAI->isAbsoluteDebugSectionOffsets()) {
+ if (Section.isBaseAddressKnownZero()) {
Asm->OutStreamer.EmitSymbolValue(Label, 4, 0/*AddrSpace*/);
return;
}
+ // Otherwise, emit it as a label difference from the start of the section.
Asm->EmitLabelDifference(Label, SectionLabel, 4);
}
diff --git a/lib/MC/MCAsmInfo.cpp b/lib/MC/MCAsmInfo.cpp
index 0306dec363..f0da694a19 100644
--- a/lib/MC/MCAsmInfo.cpp
+++ b/lib/MC/MCAsmInfo.cpp
@@ -60,7 +60,6 @@ MCAsmInfo::MCAsmInfo() {
LinkOnceDirective = 0;
HiddenVisibilityAttr = MCSA_Hidden;
ProtectedVisibilityAttr = MCSA_Protected;
- AbsoluteDebugSectionOffsets = false;
HasLEB128 = false;
HasDotLocAndDotFile = false;
SupportsDebugInformation = false;
diff --git a/lib/MC/MCAsmInfoCOFF.cpp b/lib/MC/MCAsmInfoCOFF.cpp
index e9bc8fa9c3..7fc7d7abb2 100644
--- a/lib/MC/MCAsmInfoCOFF.cpp
+++ b/lib/MC/MCAsmInfoCOFF.cpp
@@ -31,7 +31,6 @@ MCAsmInfoCOFF::MCAsmInfoCOFF() {
// Set up DWARF directives
HasLEB128 = true; // Target asm supports leb128 directives (little-endian)
- AbsoluteDebugSectionOffsets = true;
SupportsDebugInformation = true;
DwarfSectionOffsetDirective = "\t.secrel32\t";
HasMicrosoftFastStdCallMangling = true;
diff --git a/lib/Target/ARM/ARMMCAsmInfo.cpp b/lib/Target/ARM/ARMMCAsmInfo.cpp
index 20197e487d..53edfcad93 100644
--- a/lib/Target/ARM/ARMMCAsmInfo.cpp
+++ b/lib/Target/ARM/ARMMCAsmInfo.cpp
@@ -58,7 +58,6 @@ ARMELFMCAsmInfo::ARMELFMCAsmInfo() {
CommentString = "@";
HasLEB128 = true;
- AbsoluteDebugSectionOffsets = true;
PrivateGlobalPrefix = ".L";
WeakRefDirective = "\t.weak\t";
HasLCOMMDirective = true;
diff --git a/lib/Target/PowerPC/PPCMCAsmInfo.cpp b/lib/Target/PowerPC/PPCMCAsmInfo.cpp
index 0be1fa4d94..3644c79d04 100644
--- a/lib/Target/PowerPC/PPCMCAsmInfo.cpp
+++ b/lib/Target/PowerPC/PPCMCAsmInfo.cpp
@@ -38,7 +38,6 @@ PPCLinuxMCAsmInfo::PPCLinuxMCAsmInfo(bool is64Bit) {
UsesELFSectionDirectiveForBSS = true;
// Debug Information
- AbsoluteDebugSectionOffsets = true;
SupportsDebugInformation = true;
PCSymbol = ".";
diff --git a/lib/Target/Sparc/SparcMCAsmInfo.cpp b/lib/Target/Sparc/SparcMCAsmInfo.cpp
index 53a9bde925..535c6f7c8a 100644
--- a/lib/Target/Sparc/SparcMCAsmInfo.cpp
+++ b/lib/Target/Sparc/SparcMCAsmInfo.cpp
@@ -22,7 +22,6 @@ SparcELFMCAsmInfo::SparcELFMCAsmInfo(const Target &T, const StringRef &TT) {
ZeroDirective = "\t.skip\t";
CommentString = "!";
HasLEB128 = true;
- AbsoluteDebugSectionOffsets = true;
SupportsDebugInformation = true;
SunStyleELFSectionSwitchSyntax = true;
diff --git a/lib/Target/X86/X86MCAsmInfo.cpp b/lib/Target/X86/X86MCAsmInfo.cpp
index 1afabc9d9c..d257ee38c5 100644
--- a/lib/Target/X86/X86MCAsmInfo.cpp
+++ b/lib/Target/X86/X86MCAsmInfo.cpp
@@ -84,7 +84,6 @@ X86ELFMCAsmInfo::X86ELFMCAsmInfo(const Triple &T) {
HasLEB128 = true; // Target asm supports leb128 directives (little-endian)
// Debug Information
- AbsoluteDebugSectionOffsets = true;
SupportsDebugInformation = true;
// Exceptions handling
diff --git a/lib/Target/XCore/XCoreMCAsmInfo.cpp b/lib/Target/XCore/XCoreMCAsmInfo.cpp
index bf785755db..5f6feae372 100644
--- a/lib/Target/XCore/XCoreMCAsmInfo.cpp
+++ b/lib/Target/XCore/XCoreMCAsmInfo.cpp
@@ -25,6 +25,5 @@ XCoreMCAsmInfo::XCoreMCAsmInfo(const Target &T, const StringRef &TT) {
// Debug
HasLEB128 = true;
- AbsoluteDebugSectionOffsets = true;
}
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2025-06-28 14:35:27 +0000