Bug 1799014 - Fix f64x2./f32x4.max for AVX cpus. r=rhunt

Addresses wrong refactoring/optimization of the
minMaxFloat32x4AVX and minMaxFloat64x2AVX functions.

Testing of this case is covered by spec tests.
(Also to be addressed in bug 1797194)

Differential Revision: https://phabricator.services.mozilla.com/D161335

js/src/jit/x86-shared/MacroAssembler-x86-shared-SIMD.cpp

@@ -936,11 +936,12 @@ void MacroAssemblerX86Shared::minMaxFloat32x4AVX(bool isMin, FloatRegister lhs,
   if (isMin) {
     vminps(Operand(rhs), lhs, temp2);             // min lhs, rhs
     vminps(Operand(lhs), rhs, temp1);             // min rhs, lhs
+    vorps(temp1, temp2, output);                  // fix min(-0, 0) with OR
   } else {
     vmaxps(Operand(rhs), lhs, temp2);             // max lhs, rhs
     vmaxps(Operand(lhs), rhs, temp1);             // max rhs, lhs
+    vandps(temp1, temp2, output);                 // fix max(-0, 0) with AND
   }
-  vorps(temp1, temp2, output);                    // fix min(-0, 0) with OR
   vcmpunordps(Operand(rhsCopy), lhsCopy, temp1);  // lhs UNORD rhs
   vptest(temp1, temp1);                           // check if any unordered
   j(Assembler::Equal, &l);                        //   and exit if not
@@ -1028,11 +1029,12 @@ void MacroAssemblerX86Shared::minMaxFloat64x2AVX(bool isMin, FloatRegister lhs,
   if (isMin) {
     vminpd(Operand(rhs), lhs, temp2);             // min lhs, rhs
     vminpd(Operand(lhs), rhs, temp1);             // min rhs, lhs
+    vorpd(temp1, temp2, output);                  // fix min(-0, 0) with OR
   } else {
     vmaxpd(Operand(rhs), lhs, temp2);             // max lhs, rhs
     vmaxpd(Operand(lhs), rhs, temp1);             // max rhs, lhs
+    vandpd(temp1, temp2, output);                 // fix max(-0, 0) with AND
   }
-  vorpd(temp1, temp2, output);                    // fix min(-0, 0) with OR
   vcmpunordpd(Operand(rhsCopy), lhsCopy, temp1);  // lhs UNORD rhs
   vptest(temp1, temp1);                           // check if any unordered
   j(Assembler::Equal, &l);                        //   and exit if not