[llvm] [GlobalISel] Diagnose inline assembly constraint lowering errors (PR #135782)

[Matt Arsenault via llvm-commits]

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@@ -231,6 +232,16 @@ bool InlineAsmLowering::lowerInlineAsm(
   TargetLowering::AsmOperandInfoVector TargetConstraints =
       TLI->ParseConstraints(DL, TRI, Call);
 
+  const auto ConstraintError = [&](const GISelAsmOperandInfo &Info, Twine Msg) {
+    LLVMContext &Ctx = MIRBuilder.getContext();
+    Ctx.diagnose(DiagnosticInfoInlineAsm(
+        Call, "invalid constraint '" + Info.ConstraintCode + "' in '" +
+                  MF.getName() + "': " + Msg));
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arsenm wrote:

Avoid using getName, it's broken for anonymous functions. The context should be reported by the caller based on the context instructions, you shouldn't need to include it here 

https://github.com/llvm/llvm-project/pull/135782