Fast Path Math.min/max_F/D

Re-enable the fast-pathing of Math.min/max for floating
points with the behaviours around +/-0.0 and NaN correctly
handled.

Signed-off-by: Luke Li <[email protected]>

Author: luke-li-2003

runtime/compiler/p/codegen/J9CodeGenerator.cpp

@@ -147,6 +147,12 @@ J9::Power::CodeGenerator::initialize()
       cg->setIsDualTLH();
       }
 
+   static bool disableInlineMath_MaxMin_FD = feGetEnv("TR_disableInlineMaxMin") != NULL;
+   if (!disableInlineMath_MaxMin_FD && comp->target().cpu.isAtLeast(OMR_PROCESSOR_PPC_P7))
+      {
+      cg->setSupportsInlineMath_MaxMin_FD();
+      }
+
    /*
     * "Statically" initialize the FE-specific tree evaluator functions.
     * This code only needs to execute once per JIT lifetime.

runtime/compiler/p/codegen/J9TreeEvaluator.cpp

@@ -12173,7 +12173,6 @@ J9::Power::CodeGenerator::inlineDirectCall(TR::Node *node, TR::Register *&result
             return true;
             }
          break;
-
       case TR::java_lang_Math_fma_D:
       case TR::java_lang_StrictMath_fma_D:
          resultReg = inlineFPTrg1Src3(node, TR::InstOpCode::fmadd, cg);