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Rollup merge of #103021 - GuillaumeGomez:constraint-pages, r=Amanieu

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Add links to relevant pages to find constraint information

I think it can be quite helpful to find this information more quickly.

r? `@Amanieu`
This commit is contained in:
Matthias Krüger 2022-10-14 00:45:20 +02:00 committed by GitHub
commit 3f12e4bd21
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4
compiler/rustc_codegen_llvm/src/asm.rs
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@ -551,6 +551,8 @@ fn reg_to_llvm(reg: InlineAsmRegOrRegClass, layout: Option<&TyAndLayout<'_>>) ->
format!("{{{}}}", reg.name())
}
}
// The constraints can be retrieved from
// https://llvm.org/docs/LangRef.html#supported-constraint-code-list
InlineAsmRegOrRegClass::RegClass(reg) => match reg {
InlineAsmRegClass::AArch64(AArch64InlineAsmRegClass::reg) => "r",
InlineAsmRegClass::AArch64(AArch64InlineAsmRegClass::vreg) => "w",
@ -624,6 +626,8 @@ fn modifier_to_llvm(
reg: InlineAsmRegClass,
modifier: Option<char>,
) -> Option<char> {
// The modifiers can be retrieved from
// https://llvm.org/docs/LangRef.html#asm-template-argument-modifiers
match reg {
InlineAsmRegClass::AArch64(AArch64InlineAsmRegClass::reg) => modifier,
InlineAsmRegClass::AArch64(AArch64InlineAsmRegClass::vreg)