[clang] [Clang][MIPS] Create correct linker arguments for Windows toolchains (PR #121041)

[Hervé Poussineau via cfe-commits]

https://github.com/hpoussin created 
https://github.com/llvm/llvm-project/pull/121041

None

From 63841bfbc4367d7ffca989d5cdecf74cdc32db2f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Herv=C3=A9=20Poussineau?= <hpous...@reactos.org>
Date: Fri, 10 Nov 2023 23:06:52 +0100
Subject: [PATCH] [Clang][MIPS] Create correct linker arguments for Windows
 toolchains

---
 clang/lib/CodeGen/CodeGenModule.cpp |  2 ++
 clang/lib/CodeGen/TargetInfo.h      |  3 +++
 clang/lib/CodeGen/Targets/Mips.cpp  | 23 +++++++++++++++++++++++
 clang/test/CodeGen/pragma-comment.c |  1 +
 4 files changed, 29 insertions(+)

diff --git a/clang/lib/CodeGen/CodeGenModule.cpp 
b/clang/lib/CodeGen/CodeGenModule.cpp
index c49f7631488285..2ec12eb8b7b04e 100644
--- a/clang/lib/CodeGen/CodeGenModule.cpp
+++ b/clang/lib/CodeGen/CodeGenModule.cpp
@@ -119,6 +119,8 @@ createTargetCodeGenInfo(CodeGenModule &CGM) {
   case llvm::Triple::mipsel:
     if (Triple.getOS() == llvm::Triple::NaCl)
       return createPNaClTargetCodeGenInfo(CGM);
+    else if (Triple.getOS() == llvm::Triple::Win32)
+      return createWindowsMIPSTargetCodeGenInfo(CGM, /*IsOS32=*/true);
     return createMIPSTargetCodeGenInfo(CGM, /*IsOS32=*/true);
 
   case llvm::Triple::mips64:
diff --git a/clang/lib/CodeGen/TargetInfo.h b/clang/lib/CodeGen/TargetInfo.h
index ab3142bdea684e..4a66683a3b91fd 100644
--- a/clang/lib/CodeGen/TargetInfo.h
+++ b/clang/lib/CodeGen/TargetInfo.h
@@ -522,6 +522,9 @@ createM68kTargetCodeGenInfo(CodeGenModule &CGM);
 std::unique_ptr<TargetCodeGenInfo>
 createMIPSTargetCodeGenInfo(CodeGenModule &CGM, bool IsOS32);
 
+std::unique_ptr<TargetCodeGenInfo>
+createWindowsMIPSTargetCodeGenInfo(CodeGenModule &CGM, bool IsOS32);
+
 std::unique_ptr<TargetCodeGenInfo>
 createMSP430TargetCodeGenInfo(CodeGenModule &CGM);
 
diff --git a/clang/lib/CodeGen/Targets/Mips.cpp 
b/clang/lib/CodeGen/Targets/Mips.cpp
index 06d9b6d4a57615..e7601564f67d1d 100644
--- a/clang/lib/CodeGen/Targets/Mips.cpp
+++ b/clang/lib/CodeGen/Targets/Mips.cpp
@@ -105,6 +105,24 @@ class MIPSTargetCodeGenInfo : public TargetCodeGenInfo {
     return SizeOfUnwindException;
   }
 };
+
+class WindowsMIPSTargetCodeGenInfo : public MIPSTargetCodeGenInfo {
+public:
+  WindowsMIPSTargetCodeGenInfo(CodeGenTypes &CGT, bool IsO32)
+        : MIPSTargetCodeGenInfo(CGT, IsO32) {}
+
+  void getDependentLibraryOption(llvm::StringRef Lib,
+                                 llvm::SmallString<24> &Opt) const override {
+    Opt = "/DEFAULTLIB:";
+    Opt += qualifyWindowsLibrary(Lib);
+  }
+
+  void getDetectMismatchOption(llvm::StringRef Name,
+                               llvm::StringRef Value,
+                               llvm::SmallString<32> &Opt) const override {
+    Opt = "/FAILIFMISMATCH:\"" + Name.str() + "=" + Value.str() + "\"";
+  }
+};
 }
 
 void MipsABIInfo::CoerceToIntArgs(
@@ -436,3 +454,8 @@ std::unique_ptr<TargetCodeGenInfo>
 CodeGen::createMIPSTargetCodeGenInfo(CodeGenModule &CGM, bool IsOS32) {
   return std::make_unique<MIPSTargetCodeGenInfo>(CGM.getTypes(), IsOS32);
 }
+
+std::unique_ptr<TargetCodeGenInfo>
+CodeGen::createWindowsMIPSTargetCodeGenInfo(CodeGenModule &CGM, bool IsOS32) {
+  return std::make_unique<WindowsMIPSTargetCodeGenInfo>(CGM.getTypes(), 
IsOS32);
+}
diff --git a/clang/test/CodeGen/pragma-comment.c 
b/clang/test/CodeGen/pragma-comment.c
index a4746f5c47bf6b..a966840f7c26fc 100644
--- a/clang/test/CodeGen/pragma-comment.c
+++ b/clang/test/CodeGen/pragma-comment.c
@@ -6,6 +6,7 @@
 // RUN: %clang_cc1 %s -triple x86_64-scei-ps4 -fms-extensions -emit-llvm -o - 
| FileCheck -check-prefix ELF %s --implicit-check-not llvm.linker.options
 // RUN: %clang_cc1 %s -triple x86_64-sie-ps5 -fms-extensions -emit-llvm -o - | 
FileCheck -check-prefix ELF %s --implicit-check-not llvm.linker.options
 // RUN: %clang_cc1 %s -triple aarch64-windows-msvc -fms-extensions -emit-llvm 
-o - | FileCheck %s
+// RUN: %clang_cc1 %s -triple mipsel-windows-msvc -fms-extensions -emit-llvm 
-o - | FileCheck %s
 
 #pragma comment(lib, "msvcrt.lib")
 #pragma comment(lib, "kernel32")

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