It is totally unacceptable to print out (literally) millions of zeros when
compiling 129.compress... so don't!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11649 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/CBackend/CBackend.cpp b/lib/Target/CBackend/CBackend.cpp
index b52db03..93e5b07 100644
--- a/lib/Target/CBackend/CBackend.cpp
+++ b/lib/Target/CBackend/CBackend.cpp
@@ -728,10 +728,21 @@
// this, however, occurs when the variable has weak linkage. In this
// case, the assembler will complain about the variable being both weak
// and common, so we disable this optimization.
- if (!I->getInitializer()->isNullValue() ||
- I->hasWeakLinkage()) {
+ if (!I->getInitializer()->isNullValue()) {
Out << " = " ;
writeOperand(I->getInitializer());
+ } else if (I->hasWeakLinkage()) {
+ // We have to specify an initializer, but it doesn't have to be
+ // complete. If the value is an aggregate, print out { 0 }, and let
+ // the compiler figure out the rest of the zeros.
+ Out << " = " ;
+ if (isa<StructType>(I->getInitializer()->getType()) ||
+ isa<ArrayType>(I->getInitializer()->getType())) {
+ Out << "{ 0 }";
+ } else {
+ // Just print it out normally.
+ writeOperand(I->getInitializer());
+ }
}
Out << ";\n";
}