[SandboxIR] Implement a few Instruction member functions (#109820)

This patch implements a few sandboxir::Instruction predicate functions.

Author: vporpo

llvm/include/llvm/SandboxIR/SandboxIR.h

@@ -1935,6 +1935,22 @@ class Instruction : public sandboxir::User {
   /// \Returns this Instruction's opcode. Note that SandboxIR has its own opcode
   /// state to allow for new SandboxIR-specific instructions.
   Opcode getOpcode() const { return Opc; }
+
+  // TODO: Missing function getOpcodeName().
+
+  bool isTerminator() const {
+    return cast<llvm::Instruction>(Val)->isTerminator();
+  }
+  bool isUnaryOp() const { return cast<llvm::Instruction>(Val)->isUnaryOp(); }
+  bool isBinaryOp() const { return cast<llvm::Instruction>(Val)->isBinaryOp(); }
+  bool isIntDivRem() const {
+    return cast<llvm::Instruction>(Val)->isIntDivRem();
+  }
+  bool isShift() const { return cast<llvm::Instruction>(Val)->isShift(); }
+  bool isCast() const { return cast<llvm::Instruction>(Val)->isCast(); }
+
+  // TODO: More missing functions
+
   /// Detach this from its parent BasicBlock without deleting it.
   void removeFromParent();
   /// Detach this Value from its parent and delete it.

llvm/unittests/SandboxIR/SandboxIRTest.cpp

@@ -1769,6 +1769,7 @@ define void @foo(i8 %v1, ptr %ptr) {
   store volatile i8 %ld0, ptr %ptr
   %atomicrmw = atomicrmw add ptr %ptr, i8 %v1 acquire
   %udiv = udiv i8 %ld0, %v1
+  %urem = urem i8 %ld0, %v1
   call void @foo()
   ret void
 }
@@ -1861,6 +1862,18 @@ define void @foo(i8 %v1, ptr %ptr) {
 
   for (auto &LLVMI : *LLVMBB1) {
     auto &I = cast<sandboxir::Instruction>(*Ctx.getValue(&LLVMI));
+    // Check isTerminator().
+    EXPECT_EQ(LLVMI.isTerminator(), I.isTerminator());
+    // Check isUnaryOp().
+    EXPECT_EQ(LLVMI.isUnaryOp(), I.isUnaryOp());
+    // Check isBinaryOp().
+    EXPECT_EQ(LLVMI.isBinaryOp(), I.isBinaryOp());
+    // Check isIntDivRem().
+    EXPECT_EQ(LLVMI.isIntDivRem(), I.isIntDivRem());
+    // Check isShift().
+    EXPECT_EQ(LLVMI.isShift(), I.isShift());
+    // Check isCast().
+    EXPECT_EQ(LLVMI.isCast(), I.isCast());
     // Check isAssociative().
     EXPECT_EQ(LLVMI.isAssociative(), I.isAssociative());
     // Check isCommutative().