Fix Regression/CodeGen/PowerPC/2004-12-12-ZeroSizeCommon.ll, and all programs

when compiled with debug information.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18835 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/PowerPC/PPCAsmPrinter.cpp b/lib/Target/PowerPC/PPCAsmPrinter.cpp
index cc8c1f3e420046bd2ac9d6ef7dcd50fdced5ddaa..48eddb9527a0ccd332627fc8bad7c91e4ccf2f02 100644 (file)
--- a/lib/Target/PowerPC/PPCAsmPrinter.cpp
+++ b/lib/Target/PowerPC/PPCAsmPrinter.cpp
@@ -471,6 +471,7 @@ bool DarwinAsmPrinter::doFinalization(Module &M) {
           (I->hasInternalLinkage() || I->hasWeakLinkage() || 
            I->hasLinkOnceLinkage())) {
         SwitchSection(O, CurSection, ".data");
+        if (Size == 0) Size = 1;   // .comm Foo, 0 is undefined, avoid it.
         if (I->hasInternalLinkage())
           O << ".lcomm " << name << "," << Size << "," << Align;
         else