[csa] Fix unmatching argument signedness on ComputeSeededHash

CodeStubAssembler::ComputeSeededHash is passing key as Int32 to
ComputeSeededIntegerHash, but ComputeSeededIntegerHash only accepts
Uint32 value.
This could cause problems on s390 and ppc because GCC expects any
value less than 8 bytes sign/zero-extending to 64-bits by the caller,
therefore, the static cast from uint32->uint64 will be treated as
no-op (expecting zero-ext instead), which leads to unexpected
behaviors.

Change-Id: Icd1eecaea1415e36c0c13eef513ff69cc418f247
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1940209Reviewed-by: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Milad Farazmand <miladfar@ca.ibm.com>
Cr-Commit-Position: refs/heads/master@{#65239}

src/codegen/code-stub-assembler.cc

@@ -7982,10 +7982,11 @@ Node* CodeStubAssembler::ComputeSeededHash(Node* key) {
 
   MachineType type_ptr = MachineType::Pointer();
   MachineType type_uint32 = MachineType::Uint32();
+  MachineType type_int32 = MachineType::Int32();
 
   Node* const result = CallCFunction(
       function_addr, type_uint32, std::make_pair(type_ptr, isolate_ptr),
-      std::make_pair(type_uint32, TruncateIntPtrToInt32(key)));
+      std::make_pair(type_int32, TruncateIntPtrToInt32(key)));
   return result;
 }
 

src/codegen/external-reference.cc

@@ -628,9 +628,9 @@ static Address JSReceiverCreateIdentityHash(Isolate* isolate, Address raw_key) {
 FUNCTION_REFERENCE(jsreceiver_create_identity_hash,
                    JSReceiverCreateIdentityHash)
 
-static uint32_t ComputeSeededIntegerHash(Isolate* isolate, uint32_t key) {
+static uint32_t ComputeSeededIntegerHash(Isolate* isolate, int32_t key) {
   DisallowHeapAllocation no_gc;
-  return ComputeSeededHash(key, HashSeed(isolate));
+  return ComputeSeededHash(static_cast<uint32_t>(key), HashSeed(isolate));
 }
 
 FUNCTION_REFERENCE(compute_integer_hash, ComputeSeededIntegerHash)