[lld] [lld][COFF][LTO] Implement /lldemit:asm option (PR #67079)

[Martin Storsjö via llvm-commits]

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@@ -213,6 +221,8 @@ std::vector<InputFile *> BitcodeCompiler::compile() {
     pruneCache(ctx.config.ltoCache, ctx.config.ltoCachePolicy, files);
 
   std::vector<InputFile *> ret;
+  bool emitASM = ctx.config.emit == EmitKind::ASM;
+  const char *Ext = emitASM ? ".asm" : ".obj";
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mstorsjo wrote:

Hmm, even if this is among link.exe style tools, the asm that we generate is `.s` GAS style assembly, so I think `.s` would be more accurate here?

https://github.com/llvm/llvm-project/pull/67079