diff options
Diffstat (limited to 'clang/lib/CodeGen/CodeGenFunction.cpp')
| -rw-r--r-- | clang/lib/CodeGen/CodeGenFunction.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/clang/lib/CodeGen/CodeGenFunction.cpp b/clang/lib/CodeGen/CodeGenFunction.cpp index 50e1638..ba07765 100644 --- a/clang/lib/CodeGen/CodeGenFunction.cpp +++ b/clang/lib/CodeGen/CodeGenFunction.cpp @@ -981,6 +981,10 @@ void CodeGenFunction::StartFunction(GlobalDecl GD, QualType RetTy, CGM.getCodeGenOpts().StackAlignment)) Fn->addFnAttr("stackrealign"); + // "main" doesn't need to zero out call-used registers. + if (FD && FD->isMain()) + Fn->removeFnAttr("zero-call-used-regs"); + llvm::BasicBlock *EntryBB = createBasicBlock("entry", CurFn); // Create a marker to make it easy to insert allocas into the entryblock |