[llvm-dlltool] Handle MIPS architecture

Author: hpoussin

llvm/lib/ToolDrivers/llvm-dlltool/DlltoolDriver.cpp

@@ -76,6 +76,7 @@ MachineTypes getEmulation(StringRef S) {
       .Case("arm", IMAGE_FILE_MACHINE_ARMNT)
       .Case("arm64", IMAGE_FILE_MACHINE_ARM64)
       .Case("arm64ec", IMAGE_FILE_MACHINE_ARM64EC)
+      .Case("mipsel", IMAGE_FILE_MACHINE_R4000)
       .Default(IMAGE_FILE_MACHINE_UNKNOWN);
 }
 

llvm/test/tools/llvm-dlltool/machine-opt.def

@@ -6,6 +6,8 @@
 ; RUN: llvm-readobj %t.a | FileCheck --check-prefix=ARM %s
 ; RUN: llvm-dlltool -m arm64 -d %s -l %t.a
 ; RUN: llvm-readobj %t.a | FileCheck --check-prefix=ARM64 %s
+; RUN: llvm-dlltool -m mipsel -d %s -l %t.a
+; RUN: llvm-readobj %t.a | FileCheck --check-prefix=MIPSEL %s
 
 LIBRARY test.dll
 EXPORTS
@@ -15,3 +17,4 @@ TestFunction
 ; X86_64: Format: COFF-x86-64
 ; ARM: Format: COFF-ARM{{$}}
 ; ARM64: Format: COFF-ARM64
+; MIPSEL: Format: COFF-R4000