From 4af3c864bc5e8f66409d78209f25adecdeb5184a Mon Sep 17 00:00:00 2001 From: Jakob Stoklund Olesen Date: Sat, 15 Aug 2009 13:10:46 +0000 Subject: Don't setCalleeSavedInfoValid() until spills are interted. In a naked function, the flag is never set and getPristineRegs() returns an empty list. That means naked functions are able to clobber callee saved registers, but that is the whole point of naked functions. This fixes PR4716. llvm-svn: 79096 --- llvm/lib/CodeGen/PrologEpilogInserter.cpp | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'llvm/lib/CodeGen/PrologEpilogInserter.cpp') diff --git a/llvm/lib/CodeGen/PrologEpilogInserter.cpp b/llvm/lib/CodeGen/PrologEpilogInserter.cpp index 8b05f4c4a3e..608e4c5763a 100644 --- a/llvm/lib/CodeGen/PrologEpilogInserter.cpp +++ b/llvm/lib/CodeGen/PrologEpilogInserter.cpp @@ -214,8 +214,6 @@ void PEI::calculateCalleeSavedRegisters(MachineFunction &Fn) { } } - FFI->setCalleeSavedInfoValid(true); - if (CSI.empty()) return; // Early exit if no callee saved registers are modified! @@ -274,6 +272,8 @@ void PEI::insertCSRSpillsAndRestores(MachineFunction &Fn) { MachineFrameInfo *FFI = Fn.getFrameInfo(); const std::vector &CSI = FFI->getCalleeSavedInfo(); + FFI->setCalleeSavedInfoValid(true); + // Early exit if no callee saved registers are modified! if (CSI.empty()) return; -- cgit v1.2.3