PPC/s390: [wasm] Use int type for small offsets

Port ba564604

Original Commit Message:

    The uint32_t type can easily be confused with the memory offsets that
    are currently 32 bit and will become 64 bit with the memory64 proposal.
    Since the offsets into the instance are always small anyway, the type of
    the integer does not really matter, and we should stick to the default
    'int'.

R=clemensb@chromium.org, joransiu@ca.ibm.com, junyan@redhat.com, midawson@redhat.com
BUG=
LOG=N

Change-Id: Icfc3b4172984c81355ca4b69b67433892cca7408
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2491107Reviewed-by: Junliang Yan <junyan@redhat.com>
Commit-Queue: Milad Fa <mfarazma@redhat.com>
Cr-Commit-Position: refs/heads/master@{#70720}

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

@@ -88,13 +88,11 @@ void LiftoffAssembler::LoadConstant(LiftoffRegister reg, WasmValue value,
   bailout(kUnsupportedArchitecture, "LoadConstant");
 }
 
-void LiftoffAssembler::LoadFromInstance(Register dst, uint32_t offset,
-                                        int size) {
+void LiftoffAssembler::LoadFromInstance(Register dst, int offset, int size) {
   bailout(kUnsupportedArchitecture, "LoadFromInstance");
 }
 
-void LiftoffAssembler::LoadTaggedPointerFromInstance(Register dst,
-                                                     uint32_t offset) {
+void LiftoffAssembler::LoadTaggedPointerFromInstance(Register dst, int offset) {
   bailout(kUnsupportedArchitecture, "LoadTaggedPointerFromInstance");
 }
 

src/wasm/baseline/s390/liftoff-assembler-s390.h

@@ -87,13 +87,11 @@ void LiftoffAssembler::LoadConstant(LiftoffRegister reg, WasmValue value,
   bailout(kUnsupportedArchitecture, "LoadConstant");
 }
 
-void LiftoffAssembler::LoadFromInstance(Register dst, uint32_t offset,
-                                        int size) {
+void LiftoffAssembler::LoadFromInstance(Register dst, int offset, int size) {
   bailout(kUnsupportedArchitecture, "LoadFromInstance");
 }
 
-void LiftoffAssembler::LoadTaggedPointerFromInstance(Register dst,
-                                                     uint32_t offset) {
+void LiftoffAssembler::LoadTaggedPointerFromInstance(Register dst, int offset) {
   bailout(kUnsupportedArchitecture, "LoadTaggedPointerFromInstance");
 }