Changes in directory llvm/lib/Bytecode/Reader:
Reader.cpp updated: 1.169 -> 1.170
---
Log message:
Read/write global variable alignments if present
---
Diffs of the changes: (+12 -0)
Reader.cpp | 12 ++++++++++++
1 files changed, 12 insertions(+)
Index: llvm/lib/Bytecode/Reader/Reader.cpp
diff -u llvm/lib/Bytecode/Reader/Reader.cpp:1.169
llvm/lib/Bytecode/Reader/Reader.cpp:1.170
--- llvm/lib/Bytecode/Reader/Reader.cpp:1.169 Sat Nov 5 16:08:14 2005
+++ llvm/lib/Bytecode/Reader/Reader.cpp Sun Nov 6 01:11:04 2005
@@ -1903,6 +1903,17 @@
bool isConstant = VarType & 1;
bool hasInitializer = VarType & 2;
GlobalValue::LinkageTypes Linkage;
+ unsigned Alignment = 0;
+
+ // An extension word is present when linkage = 3 (internal) and hasinit =
0.
+ if (LinkageID == 3 && !hasInitializer) {
+ unsigned ExtWord = read_vbr_uint();
+ // The extension word has this format: bit 0 = has initializer, bit 1-3 =
+ // linkage, bit 4-8 = alignment (log2), bits 10+ = future use.
+ hasInitializer = ExtWord & 1;
+ LinkageID = (ExtWord >> 1) & 7;
+ Alignment = (1 << ((ExtWord >> 4) & 31)) >> 1;
+ }
switch (LinkageID) {
case 0: Linkage = GlobalValue::ExternalLinkage; break;
@@ -1930,6 +1941,7 @@
// Create the global variable...
GlobalVariable *GV = new GlobalVariable(ElTy, isConstant, Linkage,
0, "", TheModule);
+ GV->setAlignment(Alignment);
insertValue(GV, SlotNo, ModuleValues);
unsigned initSlot = 0;
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