From 4d57e0cd69d8466c9321d67021c4747ce822f79a Mon Sep 17 00:00:00 2001 From: Chris Lattner Date: Sun, 5 Feb 2006 01:29:18 +0000 Subject: [PATCH] Implement the AsmPrinter::getPreferredAlignmentLog method. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25978 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/CodeGen/AsmPrinter.cpp | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/lib/CodeGen/AsmPrinter.cpp b/lib/CodeGen/AsmPrinter.cpp index db223dee179..b489df66c14 100644 --- a/lib/CodeGen/AsmPrinter.cpp +++ b/lib/CodeGen/AsmPrinter.cpp @@ -171,6 +171,22 @@ void AsmPrinter::EmitXXStructorList(Constant *List) { } } +/// 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 AsmPrinter::getPreferredAlignmentLog(const GlobalVariable *GV) const { + unsigned Alignment = TM.getTargetData().getTypeAlignmentShift(GV->getType()); + if (GV->getAlignment() > (1U << Alignment)) + Alignment = Log2_32(GV->getAlignment()); + + if (GV->hasInitializer() && Alignment < 4) { + // If the global is not external, see if it is large. If so, give it a + // larger alignment. + if (TM.getTargetData().getTypeSize(GV->getType()->getElementType()) > 128) + Alignment = 4; // 16-byte alignment. + } + return Alignment; +} // EmitAlignment - Emit an alignment directive to the specified power of two. void AsmPrinter::EmitAlignment(unsigned NumBits, const GlobalValue *GV) const {