diff options
Diffstat (limited to 'clang/lib/CodeGen/CodeGenFunction.cpp')
| -rw-r--r-- | clang/lib/CodeGen/CodeGenFunction.cpp | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/clang/lib/CodeGen/CodeGenFunction.cpp b/clang/lib/CodeGen/CodeGenFunction.cpp index 030101d2f4e..d3b1bd77dc4 100644 --- a/clang/lib/CodeGen/CodeGenFunction.cpp +++ b/clang/lib/CodeGen/CodeGenFunction.cpp @@ -979,6 +979,13 @@ void CodeGenFunction::StartFunction(GlobalDecl GD, if (FD->isMain()) Fn->addFnAttr(llvm::Attribute::NoRecurse); + // If a custom alignment is used, force realigning to this alignment on + // any main function which certainly will need it. + if (const FunctionDecl *FD = dyn_cast_or_null<FunctionDecl>(D)) + if ((FD->isMain() || FD->isMSVCRTEntryPoint()) && + CGM.getCodeGenOpts().StackAlignment) + Fn->addFnAttr("stackrealign"); + llvm::BasicBlock *EntryBB = createBasicBlock("entry", CurFn); // Create a marker to make it easy to insert allocas into the entryblock |
