* Fix one more bug in PIC codegen: extra load is needed for *all*

non-statics.
* Introduce new option to output zero-initialized data to .bss section.
This can reduce size of binaries. Enable it by default for ELF &
Cygwin/Mingw targets. Probably, Darwin should be also added.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33299 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 9 insertions, 0 deletions

diff --git a/include/llvm/Target/TargetAsmInfo.h b/include/llvm/Target/TargetAsmInfo.h
index 6d80a7e..1b95789 100644
--- a/include/llvm/Target/TargetAsmInfo.h
+++ b/include/llvm/Target/TargetAsmInfo.h
@@ -38,6 +38,10 @@ namespace llvm {
     /// DataSection - Section directive for standard data.
     ///
     const char *DataSection;              // Defaults to ".data".
+
+    /// BSSSection - Section directive for uninitialized data.
+    ///
+    const char *BSSSection;               // Default to ".bss".
     
     /// AddressSize - Size of addresses used in file.
     ///
@@ -313,6 +317,9 @@ namespace llvm {
     const char *getDataSection() const {
       return DataSection;
     }
+    const char *getBSSSection() const {
+      return BSSSection;
+    }
     unsigned getAddressSize() const {
       return AddressSize;
     }
diff --git a/include/llvm/Target/TargetOptions.h b/include/llvm/Target/TargetOptions.h
index 4d21b0b..89234de 100644
--- a/include/llvm/Target/TargetOptions.h
+++ b/include/llvm/Target/TargetOptions.h
@@ -54,6 +54,8 @@ namespace llvm {
   /// generate libcalls to the software floating point library instead of
   /// target FP instructions.
   extern bool UseSoftFloat;
+
+  extern bool NoZerosInBSS;
 } // End llvm namespace
 
 #endif