Changes in directory llvm/lib/Target:
TargetData.cpp updated: 1.71 -> 1.72
---
Log message:
Move getPreferredAlignmentLog from AsmPrinter to TargetData
---
Diffs of the changes: (+23 -0)
TargetData.cpp | 23 +++++++++++++++++++++++
1 files changed, 23 insertions(+)
Index: llvm/lib/Target/TargetData.cpp
diff -u llvm/lib/Target/TargetData.cpp:1.71 llvm/lib/Target/TargetData.cpp:1.72
--- llvm/lib/Target/TargetData.cpp:1.71 Fri Oct 20 02:07:24 2006
+++ llvm/lib/Target/TargetData.cpp Tue Oct 24 15:32:14 2006
@@ -354,3 +354,26 @@
return Result;
}
+/// getPreferredAlignmentLog - Return the preferred alignment of the
+/// specified global, returned in log form. This includes an explicitly
+/// requested alignment (if the global has one).
+unsigned TargetData::getPreferredAlignmentLog(const GlobalVariable *GV) const {
+ const Type *ElemType = GV->getType()->getElementType();
+ unsigned Alignment = getTypeAlignmentShift(ElemType);
+ if (GV->getAlignment() > (1U << Alignment))
+ Alignment = Log2_32(GV->getAlignment());
+
+ if (GV->hasInitializer()) {
+ // Always round up alignment of global doubles to 8 bytes.
+ if (GV->getType()->getElementType() == Type::DoubleTy && Alignment < 3)
+ Alignment = 3;
+ if (Alignment < 4) {
+ // If the global is not external, see if it is large. If so, give it a
+ // larger alignment.
+ if (getTypeSize(ElemType) > 128)
+ Alignment = 4; // 16-byte alignment.
+ }
+ }
+ return Alignment;
+}
+
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