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--memory64-lowering is not compatible with SIMD #4638
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I'm currently running into this issue. Do you know how much work might be involved to fix this?
@warvstar it's a small amount of work per SIMD instruction, I believe. For example for
SIMDLoadthis would work, which is basically the same as for a normalLoad,void visitSIMDLoad(SIMDLoad* curr) { wrapAddress64(curr->ptr, curr->memory); }
(and a test should be added here). There are a number of SIMD instructions, so covering them all is where most of the work is.
@warvstar it's a small amount of work per SIMD instruction, I believe. For example for
SIMDLoadthis would work, which is basically the same as for a normalLoad,void visitSIMDLoad(SIMDLoad* curr) { wrapAddress64(curr->ptr, curr->memory); }
(and a test should be added here). There are a number of SIMD instructions, so covering them all is where most of the work is.- changed the title
[-]simd seem to break --memory64-lowering[/-][+]--memory64-lowering is not compatible with SIMD[/+]on Feb 11, 2026
If I take a simple SIMD test from emscripten and build with
MEMORY64=2(lowering) I get errors like this one:Without
--memory64-loweringthe above command work. I've attachedin.wasm.in.wasm.zip