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| author | Derek Schuff <dschuff@google.com> | 2013-06-14 16:15:29 +0000 |
|---|---|---|
| committer | Derek Schuff <dschuff@google.com> | 2013-06-14 16:15:29 +0000 |
| commit | 8a0d41e1a649c32e1f0e22c6c201a2e0d8463e30 (patch) | |
| tree | a7de62d1e90c8cec19f2fdd9378ebc25ce9f5ce7 /include | |
| parent | 80cecc8c6091b03905cdd35c4c374c20ad0702c1 (diff) | |
| download | llvm-8a0d41e1a649c32e1f0e22c6c201a2e0d8463e30.tar.gz llvm-8a0d41e1a649c32e1f0e22c6c201a2e0d8463e30.tar.bz2 llvm-8a0d41e1a649c32e1f0e22c6c201a2e0d8463e30.tar.xz | |
Make PrologEpilogInserter save/restore all callee saved registers
in functions which call __builtin_unwind_init()
__builtin_unwind_init() is an undocumented gcc intrinsic which has this effect,
and is used in libgcc_eh.
Goes part of the way toward fixing PR8541.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183984 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'include')
| -rw-r--r-- | include/llvm/IR/Intrinsics.td | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/llvm/IR/Intrinsics.td b/include/llvm/IR/Intrinsics.td index e252664e45..6530187663 100644 --- a/include/llvm/IR/Intrinsics.td +++ b/include/llvm/IR/Intrinsics.td @@ -347,6 +347,9 @@ def int_eh_typeid_for : Intrinsic<[llvm_i32_ty], [llvm_ptr_ty], [IntrNoMem]>; def int_eh_return_i32 : Intrinsic<[], [llvm_i32_ty, llvm_ptr_ty]>; def int_eh_return_i64 : Intrinsic<[], [llvm_i64_ty, llvm_ptr_ty]>; +// __builtin_unwind_init is an undocumented GCC intrinsic that causes all +// callee-saved registers to be saved and restored (regardless of whether they +// are used) in the calling function. It is used by libgcc_eh. def int_eh_unwind_init: Intrinsic<[]>, GCCBuiltin<"__builtin_unwind_init">; |