Author: dpatel
Date: Mon Feb 4 17:24:43 2008
New Revision: 46726
URL: http://llvm.org/viewvc/llvm-project?rev=46726&view=rev
Log:
Use appropriate alignment while handling packed struct member.
Modified:
llvm-gcc-4.2/trunk/gcc/llvm-convert.cpp
Modified: llvm-gcc-4.2/trunk/gcc/llvm-convert.cpp
URL:
http://llvm.org/viewvc/llvm-project/llvm-gcc-4.2/trunk/gcc/llvm-convert.cpp?rev=46726&r1=46725&r2=46726&view=diff
==============================================================================
--- llvm-gcc-4.2/trunk/gcc/llvm-convert.cpp (original)
+++ llvm-gcc-4.2/trunk/gcc/llvm-convert.cpp Mon Feb 4 17:24:43 2008
@@ -2148,6 +2148,13 @@
bool isVolatile = TREE_THIS_VOLATILE(exp);
const Type *Ty = ConvertType(TREE_TYPE(exp));
unsigned Alignment = expr_align(exp) / 8;
+ if (TREE_CODE(exp) == COMPONENT_REF)
+ if (const StructType *STy =
+ dyn_cast<StructType>(ConvertType(TREE_TYPE(TREE_OPERAND(exp, 0)))))
+ if (STy->isPacked())
+ // Packed struct members use 1 byte alignment
+ Alignment = 1;
+
if (!LV.isBitfield()) {
if (!DestLoc) {
@@ -2680,6 +2687,12 @@
LValue LV = EmitLV(lhs);
bool isVolatile = TREE_THIS_VOLATILE(lhs);
unsigned Alignment = expr_align(lhs) / 8;
+ if (TREE_CODE(lhs) == COMPONENT_REF)
+ if (const StructType *STy =
+ dyn_cast<StructType>(ConvertType(TREE_TYPE(TREE_OPERAND(lhs, 0)))))
+ if (STy->isPacked())
+ // Packed struct members use 1 byte alignment
+ Alignment = 1;
if (!LV.isBitfield()) {
const Type *ValTy = ConvertType(TREE_TYPE(rhs));
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