[PATCH] D53540: [COFF, ARM64] Implement support for SEH extensions __try/__except/__finally
David Major via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Thu Nov 8 12:29:18 PST 2018
dmajor added inline comments.
================
Comment at: lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp:6155
+ "Frame alloc symbol should be a constant");
+ const MCConstantExpr *C = dyn_cast<MCConstantExpr>(Expr);
+
----------------
mgrang wrote:
> mgrang wrote:
> > dmajor wrote:
> > > majnemer wrote:
> > > > Since you already did an isa, this can be `cast<MCConstantExpr>(Expr)`.
> > > I tried applying this patch (plus D53541, D51524, and D54248) and building Firefox, and I got a crash on null `Expr` here.
> > >
> > > Let me know if you're interested in the repro, or if it's too early for me to be playing with this code, in which case sorry for the noise.
> > >
> > @dmajor Thanks for testing this out :) If you have a reduced test case to repro the failure that would be great. Although currently I am busy with an internal release I expect to get back to this in Dec.
> @dmajor Also what patches (if any) to the Firefox code base are needed to build Firefox for arm64-windows. Are those patches publicly available?
I don't really recommend it right now, it's a bit of a hassle because you have to apply some hacks to the build system. We're working on making it easier (hopefully within a week or two). In the meantime I can try to get you a repro with creduce.
Repository:
rL LLVM
https://reviews.llvm.org/D53540
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