[EVM] Raise the maximum unfold limit from 3 instructions to 4.

Author: PavelKopyl

llvm/lib/Target/EVM/EVMConstantUnfolding.cpp

@@ -58,7 +58,7 @@ static cl::opt<float>
                                     "optimizing for speed"));
 
 static cl::opt<unsigned> InstrNumLimitUnfoldInto(
-    "evm-const-unfolding-inst-num-limit", cl::Hidden, cl::init(3),
+    "evm-const-unfolding-inst-num-limit", cl::Hidden, cl::init(4),
     cl::desc("Maximum number of instructions an original"
              "instruction can be unfolded into"));
 

llvm/test/CodeGen/EVM/constant-unfolding.ll

@@ -101,7 +101,10 @@ define void @test7() #1 {
 ; CHECK-LABEL: test7:
 ; CHECK:       ; %bb.0: ; %entry
 ; CHECK-NEXT:    JUMPDEST
-; CHECK-NEXT:    PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
+; CHECK-NEXT:    PUSH0
+; CHECK-NEXT:    NOT
+; CHECK-NEXT:    PUSH1 0x60
+; CHECK-NEXT:    SHR
 ; CHECK-NEXT:    PUSH0
 ; CHECK-NEXT:    RETURN
 entry: