[fastcall] Fix a 32-bit compare on x64

Bug: chromium:1342020
Change-Id: Ie8e68d06509cb64088c3e88140f5ab0c6494c915
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3747865Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Commit-Queue: Tobias Tebbi <tebbi@chromium.org>
Auto-Submit: Maya Lekova <mslekova@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81610}

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

@@ -2060,7 +2060,7 @@ CodeGenerator::CodeGenResult CodeGenerator::AssembleArchInstruction(
         __ j(parity_even, &fail, Label::kNear);
         // If the input is INT32_MIN, then the conversion succeeds.
         __ j(equal, &done, Label::kNear);
-        __ cmpq(output_reg, Immediate(1));
+        __ cmpl(output_reg, Immediate(1));
         // If the conversion results in INT32_MIN, but the input was not
         // INT32_MIN, then the conversion fails.
         __ j(no_overflow, &done, Label::kNear);