SjLj based exception handling unwinding support. This patch is nasty, brutish
and short. Well, it's kinda short. Definitely nasty and brutish.
The front-end generates the register/unregister calls into the SjLj runtime,
call-site indices and landing pad dispatch. The back end fills in the LSDA
with the call-site information provided by the front end. Catch blocks are
not yet implemented.
Built on Darwin and verified no llvm-core "make check" regressions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78625 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/LLVMTargetMachine.cpp b/lib/CodeGen/LLVMTargetMachine.cpp
index 8249501..c60f9c7 100644
--- a/lib/CodeGen/LLVMTargetMachine.cpp
+++ b/lib/CodeGen/LLVMTargetMachine.cpp
@@ -229,10 +229,17 @@
// Turn exception handling constructs into something the code generators can
// handle.
- if (!getTargetAsmInfo()->doesSupportExceptionHandling())
- PM.add(createLowerInvokePass(getTargetLowering()));
- else
+ switch (getTargetAsmInfo()->getExceptionHandlingType())
+ {
+ // SjLj piggy-backs on dwarf for this bit
+ case ExceptionHandling::SjLj:
+ case ExceptionHandling::Dwarf:
PM.add(createDwarfEHPass(getTargetLowering(), OptLevel==CodeGenOpt::None));
+ break;
+ case ExceptionHandling::None:
+ PM.add(createLowerInvokePass(getTargetLowering()));
+ break;
+ }
PM.add(createGCLoweringPass());