[cleanup] Use combine to make uint64_t from two uint32_t

Change-Id: I946c9f0db1dcb91ab9414be2de8285444741ca3e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2293499
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Reviewed-by: Bill Budge <bbudge@chromium.org>
Cr-Commit-Position: refs/heads/master@{#68855}

src/compiler/backend/arm64/code-generator-arm64.cc

@@ -2560,9 +2560,9 @@ CodeGenerator::CodeGenResult CodeGenerator::AssembleArchInstruction(
         DCHECK(AreConsecutive(src0, src1));
       }
       int64_t imm1 =
-          (i.InputInt32(2) & mask) | ((i.InputInt32(3) & mask) << 32);
+          make_uint64(i.InputInt32(3) & mask, i.InputInt32(2) & mask);
       int64_t imm2 =
-          (i.InputInt32(4) & mask) | ((i.InputInt32(5) & mask) << 32);
+          make_uint64(i.InputInt32(5) & mask, i.InputInt32(4) & mask);
       UseScratchRegisterScope scope(tasm());
       VRegister temp = scope.AcquireV(kFormat16B);
       __ Movi(temp, imm2, imm1);

src/compiler/backend/x64/code-generator-x64.cc

@@ -759,10 +759,8 @@ void AdjustStackPointerForTailCall(TurboAssembler* assembler,
 
 void SetupSimdImmediateInRegister(TurboAssembler* assembler, uint32_t* imms,
                                   XMMRegister reg) {
-  uint64_t value = make_uint64(imms[1], imms[0]);
-  assembler->Move(reg, value);
-  value = (imms[2]) | (uint64_t{imms[3]} << 32);
-  assembler->movq(kScratchRegister, value);
+  assembler->Move(reg, make_uint64(imms[1], imms[0]));
+  assembler->movq(kScratchRegister, make_uint64(imms[3], imms[2]));
   assembler->Pinsrq(reg, kScratchRegister, int8_t{1});
 }