Support predicate registers (clobber-only) in Hexagon inline assembly #133452
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This change LGTM. Thanks @taiki-e ! |
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…llaumeGomez Rollup of 7 pull requests Successful merges: - rust-lang#133358 (Don't type error if we fail to coerce `Pin<T>` because it doesnt contain a ref) - rust-lang#133422 (Fix clobber_abi in RV32E and RV64E inline assembly) - rust-lang#133452 (Support predicate registers (clobber-only) in Hexagon inline assembly) - rust-lang#133463 (Fix handling of x18 in AArch64 inline assembly on ohos/trusty or with -Zfixed-x18) - rust-lang#133487 (fix confusing diagnostic for reserved `##`) - rust-lang#133557 (Small doc fixes in `rustc_codegen_ssa`) - rust-lang#133560 (Trim extra space in 'repeated `mut`' diagnostic) r? `@ghost` `@rustbot` modify labels: rollup
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Rollup merge of rust-lang#133452 - taiki-e:hexagon-asm-pred, r=Amanieu Support predicate registers (clobber-only) in Hexagon inline assembly The result of the Hexagon instructions such as comparison, store conditional, etc. is stored in predicate registers (`p[0-3]`), but currently there is no way to mark it as clobbered in `asm!`. This is also needed for `clobber_abi` (although implementing `clobber_abi` will require the addition of support for [several more register classes](https://github.com/llvm/llvm-project/blob/llvmorg-19.1.0/llvm/lib/Target/Hexagon/HexagonRegisterInfo.cpp#L71-L90). see also rust-lang#93335 (comment)). Refs: - [Section 6 "Conditional Execution" in Qualcomm Hexagon V73 Programmer’s Reference Manual](https://docs.qualcomm.com/bundle/publicresource/80-N2040-53_REV_AB_Qualcomm_Hexagon_V73_Programmers_Reference_Manual.pdf#page=90) - [Register definition in LLVM](https://github.com/llvm/llvm-project/blob/llvmorg-19.1.0/llvm/lib/Target/Hexagon/HexagonRegisterInfo.td#L155) cc `@androm3da` (target maintainer of hexagon-unknown-{[none-elf](https://doc.rust-lang.org/nightly/rustc/platform-support/hexagon-unknown-none-elf.html#target-maintainers),[linux-musl](https://doc.rust-lang.org/nightly/rustc/platform-support/hexagon-unknown-linux-musl.html#target-maintainers)}) r? `@Amanieu` `@rustbot` label +A-inline-assembly (Currently there is no O-hexagon label...)
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The result of the Hexagon instructions such as comparison, store conditional, etc. is stored in predicate registers (
p[0-3]), but currently there is no way to mark it as clobbered inasm!.This is also needed for
clobber_abi(although implementingclobber_abiwill require the addition of support for several more register classes. see also #93335 (comment)).Refs:
cc @androm3da (target maintainer of hexagon-unknown-{none-elf,linux-musl})
r? @Amanieu
@rustbot label +A-inline-assembly
(Currently there is no O-hexagon label...)