Add weak reference directive.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32091 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/llvm/Target/TargetAsmInfo.h b/include/llvm/Target/TargetAsmInfo.h
index 28c144a..050949e 100644
--- a/include/llvm/Target/TargetAsmInfo.h
+++ b/include/llvm/Target/TargetAsmInfo.h
@@ -211,6 +211,10 @@
/// as being used somehow that the assembler can't see. This prevents dead
/// code elimination on some targets.
const char *UsedDirective; // Defaults to null.
+
+ /// WeakRefDirective - This directive, if non-null, is used to decalre a
+ /// global as being a weak undefined symbol.
+ const char *WeakRefDirective; // Defaults to null.
//===--- Dwarf Emission Directives -----------------------------------===//
@@ -422,6 +426,9 @@
const char *getUsedDirective() const {
return UsedDirective;
}
+ const char *getWeakRefDirective() const {
+ return WeakRefDirective;
+ }
bool hasLEB128() const {
return HasLEB128;
}
diff --git a/lib/Target/PowerPC/PPCAsmPrinter.cpp b/lib/Target/PowerPC/PPCAsmPrinter.cpp
index 1b9e94a..abbcc57 100644
--- a/lib/Target/PowerPC/PPCAsmPrinter.cpp
+++ b/lib/Target/PowerPC/PPCAsmPrinter.cpp
@@ -647,11 +647,13 @@
}
}
- if (ExtWeakSymbols.begin() != ExtWeakSymbols.end())
- SwitchToDataSection("");
- for (std::set<std::string>::iterator i = ExtWeakSymbols.begin(),
- e = ExtWeakSymbols.end(); i != e; ++i) {
- O << "\t.weak_reference " << *i << "\n";
+ if (TAI->getWeakRefDirective()) {
+ if (ExtWeakSymbols.begin() != ExtWeakSymbols.end())
+ SwitchToDataSection("");
+ for (std::set<std::string>::iterator i = ExtWeakSymbols.begin(),
+ e = ExtWeakSymbols.end(); i != e; ++i) {
+ O << TAI->getWeakRefDirective() << *i << "\n";
+ }
}
bool isPPC64 = TD->getPointerSizeInBits() == 64;
diff --git a/lib/Target/PowerPC/PPCTargetAsmInfo.cpp b/lib/Target/PowerPC/PPCTargetAsmInfo.cpp
index f8848f5..1e38009 100644
--- a/lib/Target/PowerPC/PPCTargetAsmInfo.cpp
+++ b/lib/Target/PowerPC/PPCTargetAsmInfo.cpp
@@ -33,6 +33,7 @@
StaticCtorsSection = ".mod_init_func";
StaticDtorsSection = ".mod_term_func";
UsedDirective = "\t.no_dead_strip\t";
+ WeakRefDirective = "\t.weak_reference\t";
InlineAsmStart = "# InlineAsm Start";
InlineAsmEnd = "# InlineAsm End";
diff --git a/lib/Target/TargetAsmInfo.cpp b/lib/Target/TargetAsmInfo.cpp
index 2b4f2f7..8b818fb 100644
--- a/lib/Target/TargetAsmInfo.cpp
+++ b/lib/Target/TargetAsmInfo.cpp
@@ -61,6 +61,7 @@
COMMDirectiveTakesAlignment(true),
HasDotTypeDotSizeDirective(true),
UsedDirective(0),
+ WeakRefDirective(0),
HasLEB128(false),
HasDotLoc(false),
HasDotFile(false),
diff --git a/lib/Target/X86/X86AsmPrinter.cpp b/lib/Target/X86/X86AsmPrinter.cpp
index b92a087..7226975 100644
--- a/lib/Target/X86/X86AsmPrinter.cpp
+++ b/lib/Target/X86/X86AsmPrinter.cpp
@@ -278,16 +278,12 @@
O << "\t.ascii \" -export:" << *i << "\"\n";
}
- if (!Subtarget->isTargetCygwin()) {
- // There is no external weak linkage on Mingw32 platform.
- // Defaulting to external
+ if (TAI->getWeakRefDirective()) {
if (ExtWeakSymbols.begin() != ExtWeakSymbols.end())
SwitchToDataSection("");
-
for (std::set<std::string>::iterator i = ExtWeakSymbols.begin(),
e = ExtWeakSymbols.end(); i != e; ++i) {
- O << (Subtarget->isTargetDarwin() ? "\t.weak_reference" : "\t.weak")
- << " " << *i << "\n";
+ O << TAI->getWeakRefDirective() << *i << "\n";
}
}
diff --git a/lib/Target/X86/X86TargetAsmInfo.cpp b/lib/Target/X86/X86TargetAsmInfo.cpp
index 4d44b7d..ed9f1ac 100644
--- a/lib/Target/X86/X86TargetAsmInfo.cpp
+++ b/lib/Target/X86/X86TargetAsmInfo.cpp
@@ -62,6 +62,7 @@
InlineAsmEnd = "# InlineAsm End";
SetDirective = "\t.set";
UsedDirective = "\t.no_dead_strip\t";
+ WeakRefDirective = "\t.weak_reference\t";
NeedsSet = true;
DwarfAbbrevSection = ".section __DWARF,__debug_abbrev,regular,debug";
@@ -86,6 +87,7 @@
// HasDotFile - True if target asm supports .file directives.
// bool HasDotFile; // Defaults to false.
PrivateGlobalPrefix = "."; // Prefix for private global symbols
+ WeakRefDirective = "\t.weak\t";
DwarfRequiresFrameSection = false;
DwarfAbbrevSection = "\t.section\t.debug_abbrev,\"\",@progbits";
DwarfInfoSection = "\t.section\t.debug_info,\"\",@progbits";