[llvm-lib] Handle MIPS architecture

Author: hpoussin

llvm/lib/Object/COFFImportFile.cpp

@@ -133,6 +133,8 @@ static uint16_t getImgRelRelocation(MachineTypes Machine) {
     return IMAGE_REL_ARM64_ADDR32NB;
   case IMAGE_FILE_MACHINE_I386:
     return IMAGE_REL_I386_DIR32NB;
+  case IMAGE_FILE_MACHINE_R4000:
+    return IMAGE_REL_MIPS_REFWORDNB;
   }
 }
 

llvm/lib/ToolDrivers/llvm-lib/LibDriver.cpp

@@ -168,6 +168,7 @@ static Expected<COFF::MachineTypes> getCOFFFileMachine(MemoryBufferRef MB) {
   uint16_t Machine = (*Obj)->getMachine();
   if (Machine != COFF::IMAGE_FILE_MACHINE_I386 &&
       Machine != COFF::IMAGE_FILE_MACHINE_AMD64 &&
+      Machine != COFF::IMAGE_FILE_MACHINE_R4000 &&
       Machine != COFF::IMAGE_FILE_MACHINE_ARMNT && !COFF::isAnyArm64(Machine)) {
     return createStringError(inconvertibleErrorCode(),
                              "unknown machine: " + std::to_string(Machine));
@@ -192,6 +193,8 @@ static Expected<COFF::MachineTypes> getBitcodeFileMachine(MemoryBufferRef MB) {
   case Triple::aarch64:
     return T.isWindowsArm64EC() ? COFF::IMAGE_FILE_MACHINE_ARM64EC
                                 : COFF::IMAGE_FILE_MACHINE_ARM64;
+  case Triple::mipsel:
+    return COFF::IMAGE_FILE_MACHINE_R4000;
   default:
     return createStringError(inconvertibleErrorCode(),
                              "unknown arch in target triple: " + *TripleStr);

llvm/test/tools/llvm-lib/machine.test

@@ -0,0 +1,13 @@
+RUN: rm -f %t.lib
+
+RUN: llvm-lib /out:%t.lib /machine:i386 2>&1 | FileCheck --check-prefix=EMPTYWARN %s
+RUN: llvm-lib /out:%t.lib /machine:amd64 2>&1 | FileCheck --check-prefix=EMPTYWARN %s
+
+RUN: llvm-lib /out:%t.lib /machine:mipsel 2>&1 | FileCheck --check-prefix=EMPTYWARN %s
+
+RUN: llvm-lib /out:%t.lib /machine:arm 2>&1 | FileCheck --check-prefix=EMPTYWARN %s
+RUN: llvm-lib /out:%t.lib /machine:arm64 2>&1 | FileCheck --check-prefix=EMPTYWARN %s
+RUN: llvm-lib /out:%t.lib /machine:arm64x 2>&1 | FileCheck --check-prefix=EMPTYWARN %s
+
+EMPTYWARN: warning: no input files, not writing output file
+