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author | Ben Murdoch <benm@google.com> | 2014-11-12 02:36:07 +0000 |
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committer | Ben Murdoch <benm@google.com> | 2014-11-12 02:36:07 +0000 |
commit | 2bdb5c84b88fe64a13ed5a17a5e482190c6cd9c9 (patch) | |
tree | fec81dbd00c5d184896bb4d0001746b62bb013d2 | |
parent | e9d7eff67019473a0a0d97267ac2d148fd8e08c8 (diff) | |
parent | 32157030fdea5773288de46e84f118d22def5fd2 (diff) | |
download | v8-2bdb5c84b88fe64a13ed5a17a5e482190c6cd9c9.tar.gz |
Merge from Chromium at DEPS revision 39.0.2171.59
This commit was generated by merge_to_master.py.
Change-Id: Icc82dfd5fe6115ae33a4895c0a56147ef871e4bd
-rw-r--r-- | src/version.cc | 2 | ||||
-rw-r--r-- | src/x87/lithium-codegen-x87.cc | 16 | ||||
-rw-r--r-- | src/x87/macro-assembler-x87.cc | 7 | ||||
-rw-r--r-- | src/x87/macro-assembler-x87.h | 1 |
4 files changed, 16 insertions, 10 deletions
diff --git a/src/version.cc b/src/version.cc index 75846224d..a6c529e36 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 diff --git a/src/x87/lithium-codegen-x87.cc b/src/x87/lithium-codegen-x87.cc index 00bbe5e72..a5bc5eae0 100644 --- a/src/x87/lithium-codegen-x87.cc +++ b/src/x87/lithium-codegen-x87.cc @@ -2272,6 +2272,8 @@ void LCodeGen::DoArithmeticD(LArithmeticD* instr) { 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 @@ void LCodeGen::DoArithmeticD(LArithmeticD* instr) { 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 @@ void LCodeGen::DoMathSqrt(LMathSqrt* instr) { __ 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 @@ void LCodeGen::DoMathExp(LMathExp* instr) { __ 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); } diff --git a/src/x87/macro-assembler-x87.cc b/src/x87/macro-assembler-x87.cc index 47a46d4e3..a1fa3317d 100644 --- a/src/x87/macro-assembler-x87.cc +++ b/src/x87/macro-assembler-x87.cc @@ -767,6 +767,13 @@ void MacroAssembler::X87SetRC(int rc) { } +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; diff --git a/src/x87/macro-assembler-x87.h b/src/x87/macro-assembler-x87.h index ed0b7c174..c9e9087f9 100644 --- a/src/x87/macro-assembler-x87.h +++ b/src/x87/macro-assembler-x87.h @@ -425,6 +425,7 @@ class MacroAssembler: public Assembler { void FXamSign(); void X87CheckIA(); void X87SetRC(int rc); + void X87SetFPUCW(int cw); void ClampUint8(Register reg); void ClampTOSToUint8(Register result_reg); |