Revision: 19175
Author: [email protected]
Date: Fri Feb 7 00:55:04 2014 UTC
Log: MIPS: Avoid embedding x86 NaN constant in MacroAssembler code
when snapshot is created.
BUG=
TEST=test262/15.4.4.15-8-b-ii-4
[email protected]
Review URL: https://codereview.chromium.org/156803003
Patch from Balazs Kilvady <[email protected]>.
http://code.google.com/p/v8/source/detail?r=19175
Modified:
/branches/bleeding_edge/src/mips/macro-assembler-mips.cc
=======================================
--- /branches/bleeding_edge/src/mips/macro-assembler-mips.cc Thu Feb 6
01:10:06 2014 UTC
+++ /branches/bleeding_edge/src/mips/macro-assembler-mips.cc Fri Feb 7
00:55:04 2014 UTC
@@ -3439,10 +3439,9 @@
Branch(&have_double_value, eq, mantissa_reg, Operand(zero_reg));
bind(&is_nan);
// Load canonical NaN for storing into the double array.
- uint64_t nan_int64 = BitCast<uint64_t>(
- FixedDoubleArray::canonical_not_the_hole_nan_as_double());
- li(mantissa_reg, Operand(static_cast<uint32_t>(nan_int64)));
- li(exponent_reg, Operand(static_cast<uint32_t>(nan_int64 >> 32)));
+ LoadRoot(at, Heap::kNanValueRootIndex);
+ lw(mantissa_reg, FieldMemOperand(at, HeapNumber::kValueOffset));
+ lw(exponent_reg, FieldMemOperand(at, HeapNumber::kValueOffset + 4));
jmp(&have_double_value);
bind(&smi_value);
--
--
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