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Auto merge of #82838 - Amanieu:rustdoc_asm, r=nagisa

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Allow rustdoc to handle asm! of foreign architectures

This allows rustdoc to process code containing `asm!` for architectures other than the current one. Since this never reaches codegen, we just replace target-specific registers and register classes with a dummy one.

Fixes #82869
This commit is contained in:
bors 2021-03-16 10:05:46 +00:00
commit f24ce9b014
7 changed files with 139 additions and 45 deletions
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3
compiler/rustc_codegen_llvm/src/asm.rs
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@ -528,6 +528,7 @@ fn reg_to_llvm(reg: InlineAsmRegOrRegClass, layout: Option<&TyAndLayout<'tcx>>)
InlineAsmRegClass::SpirV(SpirVInlineAsmRegClass::reg) => {
bug!("LLVM backend does not support SPIR-V")
}
InlineAsmRegClass::Err => unreachable!(),
}
.to_string(),
}
@ -594,6 +595,7 @@ fn modifier_to_llvm(
InlineAsmRegClass::SpirV(SpirVInlineAsmRegClass::reg) => {
bug!("LLVM backend does not support SPIR-V")
}
InlineAsmRegClass::Err => unreachable!(),
}
}
@ -637,6 +639,7 @@ fn dummy_output_type(cx: &CodegenCx<'ll, 'tcx>, reg: InlineAsmRegClass) -> &'ll
InlineAsmRegClass::SpirV(SpirVInlineAsmRegClass::reg) => {
bug!("LLVM backend does not support SPIR-V")
}
InlineAsmRegClass::Err => unreachable!(),
}
}