[SEH] Remove the old __C_specific_handler code now that WinEHPrepare works

This removes the -sehprepare flag and makes __C_specific_handler
functions always to use WinEHPrepare.

This was tested by building all of chromium_builder_tests and running a
few tests that use SEH, but if something breaks, we can revert this.

llvm-svn: 235557

1 files changed, 0 insertions, 40 deletions

diff --git a/llvm/lib/CodeGen/AsmPrinter/Win64Exception.cpp b/llvm/lib/CodeGen/AsmPrinter/Win64Exception.cpp
index 2737a5323d6..be15989e5f6 100644
--- a/llvm/lib/CodeGen/AsmPrinter/Win64Exception.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/Win64Exception.cpp
@@ -206,12 +206,6 @@ void Win64Exception::emitCSpecificHandlerTable() {
   for (const CallSiteEntry &CSE : CallSites) {
     if (!CSE.LPad)
       continue; // Ignore gaps.
-    for (int Selector : CSE.LPad->TypeIds) {
-      // Ignore C++ filter clauses in SEH.
-      // FIXME: Implement cleanup clauses.
-      if (isCatchEHSelector(Selector))
-        ++NumEntries;
-    }
     NumEntries += CSE.LPad->SEHHandlers.size();
   }
   Asm->OutStreamer.EmitIntValue(NumEntries, 4);
@@ -267,40 +261,6 @@ void Win64Exception::emitCSpecificHandlerTable() {
       else
         Asm->OutStreamer.EmitIntValue(0, 4);
     }
-    if (!LPad->SEHHandlers.empty())
-      continue;
-
-    // These aren't really type info globals, they are actually pointers to
-    // filter functions ordered by selector. The zero selector is used for
-    // cleanups, so slot zero corresponds to selector 1.
-    const std::vector<const GlobalValue *> &SelectorToFilter = MMI->getTypeInfos();
-
-    // Do a parallel iteration across typeids and clause labels, skipping filter
-    // clauses.
-    size_t NextClauseLabel = 0;
-    for (size_t I = 0, E = LPad->TypeIds.size(); I < E; ++I) {
-      // AddLandingPadInfo stores the clauses in reverse, but there is a FIXME
-      // to change that.
-      int Selector = LPad->TypeIds[E - I - 1];
-
-      // Ignore C++ filter clauses in SEH.
-      // FIXME: Implement cleanup clauses.
-      if (!isCatchEHSelector(Selector))
-        continue;
-
-      Asm->OutStreamer.EmitValue(Begin, 4);
-      Asm->OutStreamer.EmitValue(End, 4);
-      if (isCatchEHSelector(Selector)) {
-        assert(unsigned(Selector - 1) < SelectorToFilter.size());
-        const GlobalValue *TI = SelectorToFilter[Selector - 1];
-        if (TI) // Emit the filter function pointer.
-          Asm->OutStreamer.EmitValue(createImageRel32(Asm->getSymbol(TI)), 4);
-        else  // Otherwise, this is a "catch i8* null", or catch all.
-          Asm->OutStreamer.EmitIntValue(1, 4);
-      }
-      MCSymbol *ClauseLabel = LPad->ClauseLabels[NextClauseLabel++];
-      Asm->OutStreamer.EmitValue(createImageRel32(ClauseLabel), 4);
-    }
   }
 }