Author: evancheng
Date: Fri Jan 25 17:02:28 2008
New Revision: 46375
URL: http://llvm.org/viewvc/llvm-project?rev=46375&view=rev
Log:
Drop zero-sized aggregate arguments.
Modified:
llvm-gcc-4.2/trunk/gcc/llvm-abi.h
Modified: llvm-gcc-4.2/trunk/gcc/llvm-abi.h
URL:
http://llvm.org/viewvc/llvm-project/llvm-gcc-4.2/trunk/gcc/llvm-abi.h?rev=46375&r1=46374&r2=46375&view=diff
==============================================================================
--- llvm-gcc-4.2/trunk/gcc/llvm-abi.h (original)
+++ llvm-gcc-4.2/trunk/gcc/llvm-abi.h Fri Jan 25 17:02:28 2008
@@ -120,6 +120,13 @@
}
}
+/// isAggregareOfSizeZero - Returns true if this is an aggregate with size
zero.
+///
+static bool isAggregareOfSizeZero(tree type) {
+ if (!isAggregateTreeType(type)) return false;
+ return int_size_in_bytes(type) == 0;
+}
+
// LLVM_SHOULD_PASS_AGGREGATE_USING_BYVAL_ATTR - Return true if this aggregate
// value should be passed by value, i.e. passing its address with the byval
// attribute bit set. The default is false.
@@ -227,6 +234,9 @@
PassInMixedRegisters(type, Ty, Elts);
} else if (LLVM_SHOULD_PASS_AGGREGATE_IN_INTEGER_REGS(type)) {
PassInIntegerRegisters(type, Ty);
+ } else if (isAggregareOfSizeZero(type)) {
+ // Zero sized aggregare, just drop it!
+ ;
} else if (TREE_CODE(type) == RECORD_TYPE) {
for (tree Field = TYPE_FIELDS(type); Field; Field = TREE_CHAIN(Field))
if (TREE_CODE(Field) == FIELD_DECL) {
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