New EH representation for MSVC compatibility

Summary:
This introduces new instructions neccessary to implement MSVC-compatible
exception handling support.  Most of the middle-end and none of the
back-end haven't been audited or updated to take them into account.

Reviewers: rnk, JosephTremoulet, reames, nlewycky, rjmccall

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D11041

llvm-svn: 241888

1 files changed, 14 insertions, 0 deletions

diff --git a/llvm/lib/Analysis/IPA/InlineCost.cpp b/llvm/lib/Analysis/IPA/InlineCost.cpp
index c0d2e375cb0..213644c9b43 100644
--- a/llvm/lib/Analysis/IPA/InlineCost.cpp
+++ b/llvm/lib/Analysis/IPA/InlineCost.cpp
@@ -156,6 +156,8 @@ class CallAnalyzer : public InstVisitor<CallAnalyzer, bool> {
   bool visitSwitchInst(SwitchInst &SI);
   bool visitIndirectBrInst(IndirectBrInst &IBI);
   bool visitResumeInst(ResumeInst &RI);
+  bool visitCleanupReturnInst(CleanupReturnInst &RI);
+  bool visitCatchReturnInst(CatchReturnInst &RI);
   bool visitUnreachableInst(UnreachableInst &I);
 
 public:
@@ -903,6 +905,18 @@ bool CallAnalyzer::visitResumeInst(ResumeInst &RI) {
   return false;
 }
 
+bool CallAnalyzer::visitCleanupReturnInst(CleanupReturnInst &CRI) {
+  // FIXME: It's not clear that a single instruction is an accurate model for
+  // the inline cost of a cleanupret instruction.
+  return false;
+}
+
+bool CallAnalyzer::visitCatchReturnInst(CatchReturnInst &CRI) {
+  // FIXME: It's not clear that a single instruction is an accurate model for
+  // the inline cost of a cleanupret instruction.
+  return false;
+}
+
 bool CallAnalyzer::visitUnreachableInst(UnreachableInst &I) {
   // FIXME: It might be reasonably to discount the cost of instructions leading
   // to unreachable as they have the lowest possible impact on both runtime and