Recommit "[llvm-reduce] Add MIR support"

(Second try. Need to link against CodeGen and MC libs.)

The llvm-reduce tool has been extended to operate on MIR (import, clone and
export). Current limitation is that only a single machine function is
supported. A single reducer pass that operates on machine instructions (while
on SSA-form) has been added. Additional MIR specific reducer passes can be
added later as needed.

Differential Revision: https://reviews.llvm.org/D110527

1 files changed, 17 insertions, 2 deletions

diff --git a/llvm/tools/llvm-reduce/DeltaManager.cpp b/llvm/tools/llvm-reduce/DeltaManager.cpp
index dab4040..8dd16b0 100644
--- a/llvm/tools/llvm-reduce/DeltaManager.cpp
+++ b/llvm/tools/llvm-reduce/DeltaManager.cpp
@@ -24,6 +24,7 @@
 #include "deltas/ReduceGlobalVarInitializers.h"
 #include "deltas/ReduceGlobalVars.h"
 #include "deltas/ReduceInstructions.h"
+#include "deltas/ReduceInstructionsMIR.h"
 #include "deltas/ReduceMetadata.h"
 #include "deltas/ReduceModuleData.h"
 #include "deltas/ReduceOperandBundles.h"
@@ -59,9 +60,16 @@ static cl::opt<std::string>
   DELTA_PASS("attributes", reduceAttributesDeltaPass)                          \
   DELTA_PASS("module-data", reduceModuleDataDeltaPass)
 
+#define DELTA_PASSES_MIR                                                       \
+  DELTA_PASS("instructions", reduceInstructionsMIRDeltaPass)
+
 static void runAllDeltaPasses(TestRunner &Tester) {
 #define DELTA_PASS(NAME, FUNC) FUNC(Tester);
-  DELTA_PASSES
+  if (Tester.getProgram().isMIR()) {
+    DELTA_PASSES_MIR
+  } else {
+    DELTA_PASSES
+  }
 #undef DELTA_PASS
 }
 
@@ -71,7 +79,11 @@ static void runDeltaPassName(TestRunner &Tester, StringRef PassName) {
     FUNC(Tester);                                                              \
     return;                                                                    \
   }
-  DELTA_PASSES
+  if (Tester.getProgram().isMIR()) {
+    DELTA_PASSES_MIR
+  } else {
+    DELTA_PASSES
+  }
 #undef DELTA_PASS
   errs() << "unknown pass \"" << PassName << "\"";
   exit(1);
@@ -80,7 +92,10 @@ static void runDeltaPassName(TestRunner &Tester, StringRef PassName) {
 void llvm::printDeltaPasses(raw_ostream &OS) {
   OS << "Delta passes (pass to `--delta-passes=` as a comma separated list):\n";
 #define DELTA_PASS(NAME, FUNC) OS << "  " << NAME << "\n";
+  OS << " IR:\n";
   DELTA_PASSES
+  OS << " MIR:\n";
+  DELTA_PASSES_MIR
 #undef DELTA_PASS
 }