Reid Kleckner 34c6bb0ef0 [SEH] Add new intrinsics for recovering and restoring parent frames ... The incoming EBP value established by the runtime is actually a pointer to the end of the EH registration object, and not the true parent function frame pointer. Clang doesn't need llvm.x86.seh.exceptioninfo anymore because we know that the exception info pointer is at a fixed offset from this incoming EBP. The llvm.x86.seh.recoverfp intrinsic takes an EBP value provided by the EH runtime and returns a pointer that is usable with llvm.framerecover. The llvm.x86.seh.restoreframe intrinsic is inserted by the 32-bit specific preparation pass in blocks targetted by the EH runtime. It re-establishes any physical registers used by the parent function to address the stack, such as the frame, base, and stack pointers. Neither of these intrinsics correctly handle stack realignment prologues yet, but it's possible to add that later. Reviewers: majnemer Differential Revision: http://reviews.llvm.org/D10848 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@241125 91177308-0d34-0410-b5e6-96231b3b80d8		2015-06-30 22:46:59 +00:00
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llvm	[SEH] Add new intrinsics for recovering and restoring parent frames	2015-06-30 22:46:59 +00:00
llvm-c	lto: Clean up C libLTO interfaces pertaining to linker flags.	2015-06-29 23:09:12 +00:00