[llvm] [X86][MC] Keep backward compatibility in inline asm for constraints (PR #73529)

[Shengchen Kan via llvm-commits]

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@@ -0,0 +1,24 @@
+; Check r16-r31 can not be used with 'q','r','l' constraint for backward compatibility.
+; RUN: not llc < %s -mtriple=x86_64-unknown-unknown -mattr=+egpr 2>&1 | FileCheck %s
+
+define dso_local void @q() {
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KanRobert wrote:

Done

https://github.com/llvm/llvm-project/pull/73529