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Heejin Ahn 8e7bbf9abf [WebAssembly] Add isEHScopeReturn instruction property
Summary:
So far, `isReturn` property is used to mean both a return instruction
from a functon and the end of an EH scope, a scope that starts with a EH
scope entry BB and ends with a catchret or a cleanupret instruction.
Because WinEH uses funclets, all EH-scope-ending instructions are also
real return instruction from a function. But for wasm, they only serve
as the end marker of an EH scope but not a return instruction that
exits a function. This mismatch caused incorrect prolog and epilog
generation in wasm EH scopes. This patch fixes this.

This patch is in the same vein with rL333045, which splits
`MachineBasicBlock::isEHFuncletEntry` into `isEHFuncletEntry` and
`isEHScopeEntry`.

Reviewers: dschuff

Subscribers: sbc100, jgravelle-google, sunfish, llvm-commits

Differential Revision: https://reviews.llvm.org/D50653

llvm-svn: 340325
2018-08-21 19:44:11 +00:00
2018-08-21 18:39:20 +00:00
2014-03-02 13:08:46 +00:00
2018-08-09 22:05:19 +00:00
2016-01-26 21:29:08 +00:00
2018-06-18 12:22:17 +00:00
2018-06-08 21:21:55 +00:00

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