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authorChris Lattner <sabre@nondot.org>2010-01-19 02:48:26 +0000
committerChris Lattner <sabre@nondot.org>2010-01-19 02:48:26 +0000
commita3839bc3714e6a84222f45cf4c0f1a20a88b10cd (patch)
tree63f5a4d489473d1124be4d1d1a4ba54dd8514e1c /lib/Target/TargetLoweringObjectFile.cpp
parent129e1872c276dc76f08862276bf7433b19643cab (diff)
introduce a section kind for common linkage. Use this to slightly
simplify and commonize some of the asmprinter logic for globals. This also avoids printing the MCSection for .zerofill, which broke the llvm-gcc build. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93843 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/TargetLoweringObjectFile.cpp')
-rw-r--r--lib/Target/TargetLoweringObjectFile.cpp8
1 files changed, 6 insertions, 2 deletions
diff --git a/lib/Target/TargetLoweringObjectFile.cpp b/lib/Target/TargetLoweringObjectFile.cpp
index 26a181aea0..cd0558025b 100644
--- a/lib/Target/TargetLoweringObjectFile.cpp
+++ b/lib/Target/TargetLoweringObjectFile.cpp
@@ -141,6 +141,10 @@ SectionKind TargetLoweringObjectFile::getKindForGlobal(const GlobalValue *GV,
return SectionKind::getThreadData();
}
+ // Variables with common linkage always get classified as common.
+ if (GVar->hasCommonLinkage())
+ return SectionKind::getCommon();
+
// Variable can be easily put to BSS section.
if (isSuitableForBSS(GVar))
return SectionKind::getBSS();
@@ -577,7 +581,7 @@ SelectSectionForGlobal(const GlobalValue *GV, SectionKind Kind,
// If this global is linkonce/weak and the target handles this by emitting it
// into a 'uniqued' section name, create and return the section now.
- if (GV->isWeakForLinker()) {
+ if (GV->isWeakForLinker() && !Kind.isCommon()) {
const char *Prefix = getSectionPrefixForUniqueGlobal(Kind);
SmallString<128> Name;
Name.append(Prefix, Prefix+strlen(Prefix));
@@ -630,7 +634,7 @@ SelectSectionForGlobal(const GlobalValue *GV, SectionKind Kind,
if (Kind.isThreadData()) return TLSDataSection;
if (Kind.isThreadBSS()) return TLSBSSSection;
- if (Kind.isBSS()) return BSSSection;
+ if (Kind.isBSS() || Kind.isCommon()) return BSSSection;
if (Kind.isDataNoRel()) return DataSection;
if (Kind.isDataRelLocal()) return DataRelLocalSection;