A64: Synchronize with r18581.

src/a64/simulator-a64.cc

Index: src/a64/simulator-a64.cc
diff --git a/src/a64/simulator-a64.cc b/src/a64/simulator-a64.cc
index ce18febecbc64f9517f664f18b5f3d0dea0ed0cc..6dc5d2f6aa27aa056941d33012f5fd01923afcea 100644
--- a/src/a64/simulator-a64.cc
+++ b/src/a64/simulator-a64.cc
@@ -2060,12 +2060,12 @@ void Simulator::VisitFPDataProcessing1Source(Instruction* instr) {
   switch (instr->Mask(FPDataProcessing1SourceMask)) {
     case FMOV_s: set_sreg(fd, sreg(fn)); break;
     case FMOV_d: set_dreg(fd, dreg(fn)); break;
-    case FABS_s: set_sreg(fd, fabs(sreg(fn))); break;
-    case FABS_d: set_dreg(fd, fabs(dreg(fn))); break;
+    case FABS_s: set_sreg(fd, std::fabs(sreg(fn))); break;
+    case FABS_d: set_dreg(fd, std::fabs(dreg(fn))); break;
     case FNEG_s: set_sreg(fd, -sreg(fn)); break;
     case FNEG_d: set_dreg(fd, -dreg(fn)); break;
-    case FSQRT_s: set_sreg(fd, sqrt(sreg(fn))); break;
-    case FSQRT_d: set_dreg(fd, sqrt(dreg(fn))); break;
+    case FSQRT_s: set_sreg(fd, std::sqrt(sreg(fn))); break;
+    case FSQRT_d: set_dreg(fd, std::sqrt(dreg(fn))); break;
     case FRINTA_s: set_sreg(fd, FPRoundInt(sreg(fn), FPTieAway)); break;
     case FRINTA_d: set_dreg(fd, FPRoundInt(dreg(fn), FPTieAway)); break;
     case FRINTN_s: set_sreg(fd, FPRoundInt(sreg(fn), FPTieEven)); break;