Good suggestion, done.

Make intrinsics monomorphic

No shuffles

• Remove RELAXED_SWIZZLE sdnode

Wrong commits

Add title for relaxed swizzle instruction

The binary opcodes LGTM, not too sure about the tablegen stuff, tests look good too.

In D110111#3013948, @tlively wrote:

Nice! Thanks for writing this :D Do you know what happens when you actually try to compile some code with -mrelaxed-simd? I'm concerned that it will throw an error because the "relaxed-simd" target feature has not yet been defined in the backend (specifically in WebAssembly.td and in WebAssemblySubtarget.{h,cpp}).

Fix fallthrough, add feature to WebAssembly subtarget

I followed https://reviews.llvm.org/rGb7b9fdc114c1f9c788da914dac5c343277805446 for this, hope it's right, ptal Thomas.

I found this patch while searching for a similar problem I faced while tryin to use clang-tidy to fix some warnings in V8 (Chrome's JavaScript engine).
The setup for our compilation is as such:

Thanks Steven, I do not have commit access, can you please help me commit this?

Thanks for the advice, Steven. I found some existing tests that exercised the particular downcasting logic, and found that if I set -filetype=null in those RUN: directives, I could trigger a crash. So I added a line to those tests. Also made the same fix to PPCAsmParser and PPCAIXAsmPrinter.

Add some tests for null streamer. Fix more instances of downcast from nullptr.

Add null check

I don't have a good idea how to add test for this. With an ASAN build with -fsanitize=null, we get an error when running inlined-strings.ll.