Chris Lattner b134520b86 If we have zero initialized data with external linkage, use .zerofill to ...

emit it (instead of .space), saving a bit of space in the .o file.

For example:
int foo[100];
int bar[100] = {};

when compiled with C++ or -fno-common results in shrinkage from 1160 to 360
bytes of space.  The X86 backend can also do this on darwin.

llvm-svn: 26185

2006-02-14 22:18:23 +00:00

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