Revision: 125990
Author: clattner
Date: 2007-04-11 16:44:56 -0700 (Wed, 11 Apr 2007)
Log Message:
-----------
Switch approaches used to handle union destinations. This approach
correctly handles multi-element struct destinations as well, and
doesn't require a codegen change.
Modified Paths:
--------------
apple-local/branches/llvm/gcc/llvm-convert.cpp
Modified: apple-local/branches/llvm/gcc/llvm-convert.cpp
===================================================================
--- apple-local/branches/llvm/gcc/llvm-convert.cpp 2007-04-11 22:35:32 UTC
(rev 125989)
+++ apple-local/branches/llvm/gcc/llvm-convert.cpp 2007-04-11 23:44:56 UTC
(rev 125990)
@@ -3603,9 +3603,16 @@
LValue Dest = EmitLV(Operand);
const Type *DestValTy =
cast<PointerType>(Dest.Ptr->getType())->getElementType();
+ if (!DestValTy->isFirstClassType()) {
+ // If this is a pointer to a structure or a union, convert this to be a
+ // pointer to a same-sized integer. GCC allows destinations of structs
+ // and unions if they are the same size as a register.
+ DestValTy = IntegerType::get(TD.getTypeSizeInBits(DestValTy));
+ Dest.Ptr = new BitCastInst(Dest.Ptr, PointerType::get(DestValTy), "tmp",
+ CurBB);
+ }
assert(!Dest.isBitfield() && "Cannot assign into a bitfield!");
- if (ConstraintStr.empty() && !AllowsMem &&
- DestValTy->isFirstClassType()) { // Reg dest and no output yet?
+ if (ConstraintStr.empty() && !AllowsMem) { // Reg dest and no output yet?
assert(StoreCallResultAddr == 0 && "Already have a result val?");
StoreCallResultAddr = Dest.Ptr;
ConstraintStr += ",";
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