merge in lmp-mr1-release history after reset to lmp-mr1-dev

src/version.cc

diff --git a/src/version.cc b/src/version.cc
index 7584622..a6c529e 100644
--- a/src/version.cc
+++ b/src/version.cc
@@ -35,7 +35,7 @@
 #define MAJOR_VERSION     3
 #define MINOR_VERSION     29
 #define BUILD_NUMBER      88
-#define PATCH_LEVEL       15
+#define PATCH_LEVEL       17
 // Use 1 for candidates and 0 otherwise.
 // (Boolean macro values are not supported by all preprocessors.)
 #define IS_CANDIDATE_VERSION 0

src/x87/lithium-codegen-x87.cc

diff --git a/src/x87/lithium-codegen-x87.cc b/src/x87/lithium-codegen-x87.cc
index 00bbe5e..a5bc5ea 100644
--- a/src/x87/lithium-codegen-x87.cc
+++ b/src/x87/lithium-codegen-x87.cc
@@ -2272,6 +2272,8 @@
   if (instr->op() != Token::MOD) {
     X87PrepareBinaryOp(left, right, result);
   }
+  // Set the precision control to double-precision.
+  __ X87SetFPUCW(0x027F);
   switch (instr->op()) {
     case Token::ADD:
       __ fadd_i(1);
@@ -2306,12 +2308,8 @@
       break;
   }
 
-  // Only always explicitly storing to memory to force the round-down for double
-  // arithmetic.
-  __ lea(esp, Operand(esp, -kDoubleSize));
-  __ fstp_d(Operand(esp, 0));
-  __ fld_d(Operand(esp, 0));
-  __ lea(esp, Operand(esp, kDoubleSize));
+  // Restore the default value of control word.
+  __ X87SetFPUCW(0x037F);
 }
 
 
@@ -4062,8 +4060,8 @@
     __ mov(esi, Operand(ebp, StandardFrameConstants::kContextOffset));
     __ push(temp_result);
     __ CallRuntimeSaveDoubles(Runtime::kMathSqrtRT);
-    RecordSafepointWithRegisters(
-        instr->pointer_map(), 0, Safepoint::kNoLazyDeopt);
+    RecordSafepointWithRegisters(instr->pointer_map(), 1,
+                                 Safepoint::kNoLazyDeopt);
     __ StoreToSafepointRegisterSlot(temp_result, eax);
   }
   X87PrepareToWrite(result_reg);
@@ -4277,7 +4275,7 @@
     __ mov(esi, Operand(ebp, StandardFrameConstants::kContextOffset));
     __ push(temp_result);
     __ CallRuntimeSaveDoubles(Runtime::kMathExpRT);
-    RecordSafepointWithRegisters(instr->pointer_map(), 0,
+    RecordSafepointWithRegisters(instr->pointer_map(), 1,
                                  Safepoint::kNoLazyDeopt);
     __ StoreToSafepointRegisterSlot(temp_result, eax);
   }

src/x87/macro-assembler-x87.cc

diff --git a/src/x87/macro-assembler-x87.cc b/src/x87/macro-assembler-x87.cc
index 47a46d4..a1fa331 100644
--- a/src/x87/macro-assembler-x87.cc
+++ b/src/x87/macro-assembler-x87.cc
@@ -767,6 +767,13 @@
 }
 
 
+void MacroAssembler::X87SetFPUCW(int cw) {
+  push(Immediate(cw));
+  fldcw(MemOperand(esp, 0));
+  add(esp, Immediate(kPointerSize));
+}
+
+
 void MacroAssembler::AssertNumber(Register object) {
   if (emit_debug_code()) {
     Label ok;

src/x87/macro-assembler-x87.h

diff --git a/src/x87/macro-assembler-x87.h b/src/x87/macro-assembler-x87.h
index ed0b7c1..c9e9087 100644
--- a/src/x87/macro-assembler-x87.h
+++ b/src/x87/macro-assembler-x87.h
@@ -425,6 +425,7 @@
   void FXamSign();
   void X87CheckIA();
   void X87SetRC(int rc);
+  void X87SetFPUCW(int cw);
 
   void ClampUint8(Register reg);
   void ClampTOSToUint8(Register result_reg);