[WinEH] Make llvm.x86.seh.recoverfp work on x64
authorReid Kleckner <rnk@google.com>
Tue, 15 Dec 2015 23:40:58 +0000 (23:40 +0000)
committerReid Kleckner <rnk@google.com>
Tue, 15 Dec 2015 23:40:58 +0000 (23:40 +0000)
It adjusts from RSP-after-prologue to RBP, which is what SEH filters
need to do before they can use llvm.localrecover.

Fixes SEH filter captures, which were broken in r250088.

Issue reported by Alex Crichton.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255707 91177308-0d34-0410-b5e6-96231b3b80d8


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