Add loongarch64 asm! support #101069
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,131 @@ | ||
| use super::{InlineAsmArch, InlineAsmType}; | ||
| use rustc_macros::HashStable_Generic; | ||
| use rustc_span::Symbol; | ||
| use std::fmt; | ||
|
|
||
| def_reg_class! { | ||
| LoongArch LoongArchInlineAsmRegClass { | ||
| reg, | ||
| freg, | ||
| } | ||
| } | ||
|
|
||
| impl LoongArchInlineAsmRegClass { | ||
| pub fn valid_modifiers(self, _arch: super::InlineAsmArch) -> &'static [char] { | ||
| &[] | ||
| } | ||
|
|
||
| pub fn suggest_class(self, _arch: InlineAsmArch, _ty: InlineAsmType) -> Option<Self> { | ||
| None | ||
| } | ||
|
|
||
| pub fn suggest_modifier( | ||
| self, | ||
| _arch: InlineAsmArch, | ||
| _ty: InlineAsmType, | ||
| ) -> Option<(char, &'static str)> { | ||
| None | ||
| } | ||
|
|
||
| pub fn default_modifier(self, _arch: InlineAsmArch) -> Option<(char, &'static str)> { | ||
| None | ||
| } | ||
|
|
||
| pub fn supported_types( | ||
| self, | ||
| arch: InlineAsmArch, | ||
| ) -> &'static [(InlineAsmType, Option<Symbol>)] { | ||
| match (self, arch) { | ||
| (Self::reg, InlineAsmArch::LoongArch64) => types! { _: I8, I16, I32, I64, F32, F64; }, | ||
| (Self::reg, _) => types! { _: I8, I16, I32, F32; }, | ||
| (Self::freg, _) => types! { _: F32, F64; }, | ||
| } | ||
| } | ||
| } | ||
|
|
||
| // The reserved registers are taken from <https://github.com/llvm/llvm-project/blob/main/llvm/lib/Target/LoongArch/LoongArchRegisterInfo.cpp#79> | ||
| def_regs! { | ||
| LoongArch LoongArchInlineAsmReg LoongArchInlineAsmRegClass { | ||
| r1: reg = ["$r1","$ra"], | ||
| r4: reg = ["$r4","$a0"], | ||
| r5: reg = ["$r5","$a1"], | ||
| r6: reg = ["$r6","$a2"], | ||
| r7: reg = ["$r7","$a3"], | ||
| r8: reg = ["$r8","$a4"], | ||
| r9: reg = ["$r9","$a5"], | ||
| r10: reg = ["$r10","$a6"], | ||
| r11: reg = ["$r11","$a7"], | ||
| r12: reg = ["$r12","$t0"], | ||
| r13: reg = ["$r13","$t1"], | ||
| r14: reg = ["$r14","$t2"], | ||
| r15: reg = ["$r15","$t3"], | ||
| r16: reg = ["$r16","$t4"], | ||
| r17: reg = ["$r17","$t5"], | ||
| r18: reg = ["$r18","$t6"], | ||
| r19: reg = ["$r19","$t7"], | ||
| r20: reg = ["$r20","$t8"], | ||
| r23: reg = ["$r23","$s0"], | ||
| r24: reg = ["$r24","$s1"], | ||
| r25: reg = ["$r25","$s2"], | ||
| r26: reg = ["$r26","$s3"], | ||
| r27: reg = ["$r27","$s4"], | ||
| r28: reg = ["$r28","$s5"], | ||
| r29: reg = ["$r29","$s6"], | ||
| r30: reg = ["$r30","$s7"], | ||
| f0: freg = ["$f0","$fa0"], | ||
| f1: freg = ["$f1","$fa1"], | ||
| f2: freg = ["$f2","$fa2"], | ||
| f3: freg = ["$f3","$fa3"], | ||
| f4: freg = ["$f4","$fa4"], | ||
| f5: freg = ["$f5","$fa5"], | ||
| f6: freg = ["$f6","$fa6"], | ||
| f7: freg = ["$f7","$fa7"], | ||
| f8: freg = ["$f8","$ft0"], | ||
| f9: freg = ["$f9","$ft1"], | ||
| f10: freg = ["$f10","$ft2"], | ||
| f11: freg = ["$f11","$ft3"], | ||
| f12: freg = ["$f12","$ft4"], | ||
| f13: freg = ["$f13","$ft5"], | ||
| f14: freg = ["$f14","$ft6"], | ||
| f15: freg = ["$f15","$ft7"], | ||
| f16: freg = ["$f16","$ft8"], | ||
| f17: freg = ["$f17","$ft9"], | ||
| f18: freg = ["$f18","$ft10"], | ||
| f19: freg = ["$f19","$ft11"], | ||
| f20: freg = ["$f20","$ft12"], | ||
| f21: freg = ["$f21","$ft13"], | ||
| f22: freg = ["$f22","$ft14"], | ||
| f23: freg = ["$f23","$ft15"], | ||
| f24: freg = ["$f24","$fs0"], | ||
| f25: freg = ["$f25","$fs1"], | ||
| f26: freg = ["$f26","$fs2"], | ||
| f27: freg = ["$f27","$fs3"], | ||
| f28: freg = ["$f28","$fs4"], | ||
| f29: freg = ["$f29","$fs5"], | ||
| f30: freg = ["$f30","$fs6"], | ||
| f31: freg = ["$f31","$fs7"], | ||
| #error = ["$r0","$zero"] => | ||
| "constant zero cannot be used as an operand for inline asm", | ||
| #error = ["$r2","$tp"] => | ||
| "reserved for TLS", | ||
| #error = ["$r3","$sp"] => | ||
| "the stack pointer cannot be used as an operand for inline asm", | ||
| #error = ["$r21"] => | ||
| "reserved by the ABI", | ||
| #error = ["$r22","$fp"] => | ||
| "the frame pointer cannot be used as an operand for inline asm", | ||
| #error = ["$r31","$s8"] => | ||
| "$r31 is used internally by LLVM and cannot be used as an operand for inline asm", | ||
|
There was a problem hiding this comment. Why is this the case? I haven't seen any such usage in upstream LLVM so far. Care sharing a link? There was a problem hiding this comment. https://github.com/llvm/llvm-project/blob/bd81524e7f52c38ad0bc689934343a476e545265/llvm/lib/Target/LoongArch/LoongArchRegisterInfo.cpp#L93 |
||
| } | ||
| } | ||
|
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||
| impl LoongArchInlineAsmReg { | ||
| pub fn emit( | ||
| self, | ||
| out: &mut dyn fmt::Write, | ||
| _arch: InlineAsmArch, | ||
| _modifier: Option<char>, | ||
| ) -> fmt::Result { | ||
| out.write_str(self.name()) | ||
| } | ||
| } | ||
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$fpis also$s9, please add this ABI name if possible.