ppc: [liftoff] Fix AndU64 issue with signed value

Change-Id: Id8ac0df2ac107c1bfc68b852f47e5928b0fe098e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3076062Reviewed-by: Milad Fa <mfarazma@redhat.com>
Commit-Queue: Junliang Yan <junyan@redhat.com>
Cr-Commit-Position: refs/heads/master@{#76131}

src/codegen/ppc/macro-assembler-ppc.cc

@@ -2383,8 +2383,9 @@ void TurboAssembler::CheckPageFlag(
     Register scratch,  // scratch may be same register as object
     int mask, Condition cc, Label* condition_met) {
   DCHECK(cc == ne || cc == eq);
+  DCHECK(scratch != r0);
   ClearRightImm(scratch, object, Operand(kPageSizeBits));
-  LoadU64(scratch, MemOperand(scratch, BasicMemoryChunk::kFlagsOffset));
+  LoadU64(scratch, MemOperand(scratch, BasicMemoryChunk::kFlagsOffset), r0);
 
   mov(r0, Operand(mask));
   and_(r0, scratch, r0, SetRC);
@@ -2752,7 +2753,7 @@ void TurboAssembler::MulS32(Register dst, Register src, Register value, OEBit s,
 
 void TurboAssembler::AndU64(Register dst, Register src, const Operand& value,
                             Register scratch, RCBit r) {
-  if (is_int16(value.immediate()) && r == SetRC) {
+  if (is_uint16(value.immediate()) && r == SetRC) {
     andi(dst, src, value);
   } else {
     mov(scratch, value);

src/wasm/baseline/ppc/liftoff-assembler-ppc.h

@@ -228,7 +228,7 @@ void LiftoffAssembler::StoreTaggedPointer(Register dst_addr,
 
   Label write_barrier;
   Label exit;
-  CheckPageFlag(dst_addr, r0, MemoryChunk::kPointersFromHereAreInterestingMask,
+  CheckPageFlag(dst_addr, ip, MemoryChunk::kPointersFromHereAreInterestingMask,
                 ne, &write_barrier);
   b(&exit);
   bind(&write_barrier);
@@ -236,7 +236,7 @@ void LiftoffAssembler::StoreTaggedPointer(Register dst_addr,
   if (COMPRESS_POINTERS_BOOL) {
     DecompressTaggedPointer(src.gp(), src.gp());
   }
-  CheckPageFlag(src.gp(), r0, MemoryChunk::kPointersToHereAreInterestingMask,
+  CheckPageFlag(src.gp(), ip, MemoryChunk::kPointersToHereAreInterestingMask,
                 eq, &exit);
   mov(ip, Operand(offset_imm));
   add(ip, ip, dst_addr);