MIPS: Fix long branches being emitted mistakenly in floating-point branches

src/mips64/macro-assembler-mips64.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <limits.h>  // For LONG_MIN, LONG_MAX.
 
 #if V8_TARGET_ARCH_MIPS64
 
 #include "src/base/division-by-constant.h"
 #include "src/bootstrapper.h"
@@ skipping 2361 matching lines @@
     return;
   }
 
   if (kArchVariant == kMips64r6) {
     sizeField = sizeField == D ? L : W;
   }
 
   DCHECK(nan || target);
   // Check for unordered (NaN) cases.
   if (nan) {
-    bool long_branch = nan->is_bound() ? is_near(nan) : is_trampoline_emitted();
+    bool long_branch =
+        nan->is_bound() ? !is_near(nan) : is_trampoline_emitted();
     if (kArchVariant != kMips64r6) {
       if (long_branch) {
         Label skip;
         c(UN, sizeField, cmp1, cmp2);
         bc1f(&skip);
         nop();
         BranchLong(nan, bd);
         bind(&skip);
       } else {
         c(UN, sizeField, cmp1, cmp2);
@@ skipping 19 matching lines @@
         bc1nez(nan, kDoubleCompareReg);
         if (bd == PROTECT) {
           nop();
         }
       }
     }
   }
 
   if (target) {
     bool long_branch =
-        target->is_bound() ? is_near(target) : is_trampoline_emitted();
+        target->is_bound() ? !is_near(target) : is_trampoline_emitted();
     if (long_branch) {
       Label skip;
       Condition neg_cond = NegateFpuCondition(cond);
       BranchShortF(sizeField, &skip, neg_cond, cmp1, cmp2, bd);
       BranchLong(target, bd);
       bind(&skip);
     } else {
       BranchShortF(sizeField, target, cond, cmp1, cmp2, bd);
     }
   }
@@ skipping 4974 matching lines @@
   if (mag.shift > 0) sra(result, result, mag.shift);
   srl(at, dividend, 31);
   Addu(result, result, Operand(at));
 }
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_MIPS64