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[WinEH] Add 32-bit SEH state table emission prototype

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This gets all the handler info through to the asm printer and we can
look at the .xdata tables now. I've convinced one small catch-all test
case to work, but other than that, it would be a stretch to say this is
functional.

The state numbering algorithm avoids doing any scope reconstruction as
we do for C++ to simplify the implementation.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239433 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Reid Kleckner
2015-06-09 21:42:19 +00:00
parent e2e26b486d
commit bdcbc426af
11 changed files with 447 additions and 30 deletions
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4
include/llvm/IR/Intrinsics.td
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@@ -428,8 +428,8 @@ def int_eh_endcatch : Intrinsic<[], []>;
// Represents the list of actions to take when an exception is thrown.
def int_eh_actions : Intrinsic<[llvm_ptr_ty], [llvm_vararg_ty], []>;
def int_eh_exceptioncode : Intrinsic<[llvm_i32_ty], []>;
def int_eh_exceptioninfo : Intrinsic<[llvm_ptr_ty], []>;
def int_eh_exceptioncode : Intrinsic<[llvm_i32_ty], [], [IntrReadMem]>;
def int_eh_exceptioninfo : Intrinsic<[llvm_ptr_ty], [], [IntrReadMem]>;
// __builtin_unwind_init is an undocumented GCC intrinsic that causes all
// callee-saved registers to be saved and restored (regardless of whether they