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author | Eric Christopher <echristo@apple.com> | 2010-05-26 01:59:55 +0000 |
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committer | Eric Christopher <echristo@apple.com> | 2010-05-26 01:59:55 +0000 |
commit | 174e597d466547d34cf8fcd2a95976e0cf5ebbac (patch) | |
tree | 44a098a405e1b13f0012f074584db93d6ec2afa8 /lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp | |
parent | 54e13eceff09ee79dc6408be990aabdee1a561dc (diff) | |
download | external_llvm-174e597d466547d34cf8fcd2a95976e0cf5ebbac.zip external_llvm-174e597d466547d34cf8fcd2a95976e0cf5ebbac.tar.gz external_llvm-174e597d466547d34cf8fcd2a95976e0cf5ebbac.tar.bz2 |
Temporarily revert r104655 as it's breaking the bots.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104664 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp')
-rw-r--r-- | lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp | 34 |
1 files changed, 0 insertions, 34 deletions
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp index 7e40cb9..6d789a6 100644 --- a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp +++ b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp @@ -25,7 +25,6 @@ #include "llvm/Intrinsics.h" #include "llvm/IntrinsicInst.h" #include "llvm/LLVMContext.h" -#include "llvm/Module.h" #include "llvm/CodeGen/FastISel.h" #include "llvm/CodeGen/GCStrategy.h" #include "llvm/CodeGen/GCMetadata.h" @@ -254,39 +253,6 @@ bool SelectionDAGISel::runOnMachineFunction(MachineFunction &mf) { done:; } - // Set a flag indicating if the machine function makes a call to setjmp / - // sigsetjmp (i.e., a function marked "returns_twice"). We'll use this to - // disable certain optimizations which cannot handle such control flows. - // - // FIXME: This goes beyond the setjmp/sigsetjmp functions. We should check for - // the GCC "returns twice" attribute. - const Module *M = Fn.getParent(); - const Function *SetJmp = M->getFunction("setjmp"); - const Function *SigSetJmp = M->getFunction("sigsetjmp"); - bool HasReturnsTwiceCall = false; - - if (SetJmp || SigSetJmp) { - if (SetJmp && !SetJmp->use_empty()) - for (Value::const_use_iterator - I = SetJmp->use_begin(), E = SetJmp->use_end(); I != E; ++I) - if (const CallInst *CI = dyn_cast<CallInst>(I)) - if (CI->getParent()->getParent() == &Fn) { - HasReturnsTwiceCall = true; - break; - } - - if (!HasReturnsTwiceCall && SigSetJmp && !SigSetJmp->use_empty()) - for (Value::const_use_iterator - I = SigSetJmp->use_begin(), E = SigSetJmp->use_end(); I != E; ++I) - if (const CallInst *CI = dyn_cast<CallInst>(I)) - if (CI->getParent()->getParent() == &Fn) { - HasReturnsTwiceCall = true; - break; - } - - mf.setReturnsTwiceCall(HasReturnsTwiceCall); - } - // Release function-specific state. SDB and CurDAG are already cleared // at this point. FuncInfo->clear(); |