ppc/s390: replace LoadP with LoadU64

Change-Id: I636b9e8ab8ac89cbdf9814bc1bce2eaad2bcf030
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2892606Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Junliang Yan <junyan@redhat.com>
Cr-Commit-Position: refs/heads/master@{#74578}

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

@@ -148,9 +148,6 @@ class V8_EXPORT_PRIVATE TurboAssembler : public TurboAssemblerBase {
 
   // These exist to provide portability between 32 and 64bit
   void LoadU64(Register dst, const MemOperand& mem, Register scratch = no_reg);
-  void LoadP(Register dst, const MemOperand& mem, Register scratch = no_reg) {
-    LoadU64(dst, mem, no_reg);
-  }
   void LoadPU(Register dst, const MemOperand& mem, Register scratch = no_reg);
   void LoadWordArith(Register dst, const MemOperand& mem,
                      Register scratch = no_reg);

src/codegen/s390/macro-assembler-s390.h

@@ -776,9 +776,6 @@ class V8_EXPORT_PRIVATE TurboAssembler : public TurboAssemblerBase {
   void ResetRoundingMode();
 
   // These exist to provide portability between 32 and 64bit
-  void LoadP(Register dst, const MemOperand& mem, Register scratch = no_reg) {
-    LoadU64(dst, mem, scratch);
-  }
   void LoadMultipleP(Register dst1, Register dst2, const MemOperand& mem);
   void StoreMultipleP(Register dst1, Register dst2, const MemOperand& mem);
   void LoadMultipleW(Register dst1, Register dst2, const MemOperand& mem);

test/cctest/wasm/test-jump-table-assembler.cc

@@ -122,14 +122,14 @@ void CompileJumpTableThunk(Address thunk, Address jump_target) {
   __ Br(scratch);
 #elif V8_TARGET_ARCH_PPC64
   __ mov(scratch, Operand(stop_bit_address, RelocInfo::NONE));
-  __ LoadP(scratch, MemOperand(scratch));
+  __ LoadU64(scratch, MemOperand(scratch));
   __ cmpi(scratch, Operand::Zero());
   __ bne(&exit);
   __ mov(scratch, Operand(jump_target, RelocInfo::NONE));
   __ Jump(scratch);
 #elif V8_TARGET_ARCH_S390X
   __ mov(scratch, Operand(stop_bit_address, RelocInfo::NONE));
-  __ LoadP(scratch, MemOperand(scratch));
+  __ LoadU64(scratch, MemOperand(scratch));
   __ CmpP(scratch, Operand(0));
   __ bne(&exit);
   __ mov(scratch, Operand(jump_target, RelocInfo::NONE));