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Don't merge loads for xmm registers (#4891)

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Do not merge loads for xmm registers, as alignment requirements currently aren't satisfied with clif lowered from wasm.

Fixes #4890
This commit is contained in:
Trevor Elliott
2022-09-12 10:14:35 -07:00
committed by GitHub
parent 555309a480
commit ad09c273c6
3 changed files with 57 additions and 48 deletions
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8
cranelift/codegen/src/isa/x64/lower/isle.rs
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@@ -166,14 +166,6 @@ impl Context for IsleContext<'_, '_, MInst, Flags, IsaFlags, 6> {
.unwrap();
}
if let InputSourceInst::UniqueUse(src_insn, 0) = inputs.inst {
if let Some((addr_input, offset)) = is_mergeable_load(self.lower_ctx, src_insn) {
self.lower_ctx.sink_inst(src_insn);
let amode = lower_to_amode(self.lower_ctx, addr_input, offset);
return XmmMem::new(RegMem::mem(amode)).unwrap();
}
}
XmmMem::new(RegMem::reg(self.put_in_reg(val))).unwrap()
}