[llvm][AsmPrinter] CodeView for UEFI (#138359)

Author: Prabhuk

llvm/lib/CodeGen/AsmPrinter/AsmPrinter.cpp

@@ -561,7 +561,8 @@ bool AsmPrinter::doInitialization(Module &M) {
 
   if (MAI->doesSupportDebugInformation()) {
     bool EmitCodeView = M.getCodeViewFlag();
-    if (EmitCodeView && TM.getTargetTriple().isOSWindows())
+    if (EmitCodeView &&
+        (TM.getTargetTriple().isOSWindows() || TM.getTargetTriple().isUEFI()))
       Handlers.push_back(std::make_unique<CodeViewDebug>(this));
     if (!EmitCodeView || M.getDwarfVersion()) {
       if (hasDebugInfo()) {

llvm/test/DebugInfo/COFF/asm.ll

@@ -2,6 +2,8 @@
 ; RUN: llc -mcpu=core2 -mtriple=i686-pc-win32 -o - -O0 < %s | llvm-mc -triple=i686-pc-win32 -filetype=obj | llvm-readobj -S --sr --codeview - | FileCheck --check-prefix=OBJ32 %s
 ; RUN: llc -mcpu=core2 -mtriple=x86_64-pc-win32 -O0 < %s | FileCheck --check-prefix=X64 %s
 ; RUN: llc -mcpu=core2 -mtriple=x86_64-pc-win32 -o - -O0 < %s | llvm-mc -triple=x86_64-pc-win32 -filetype=obj | llvm-readobj -S --sr --codeview - | FileCheck --check-prefix=OBJ64 %s
+; RUN: llc -mcpu=core2 -mtriple=x86_64-uefi -O0 < %s | FileCheck --check-prefix=X64 %s
+; RUN: llc -mcpu=core2 -mtriple=x86_64-uefi -o - -O0 < %s | llvm-mc -triple=x86_64-pc-win32 -filetype=obj | llvm-readobj -S --sr --codeview - | FileCheck --check-prefix=OBJ64 %s
 
 ; This LL file was generated by running clang on the following code:
 ; D:\asm.c: