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MIPS: Fix loading Float64 constants in turbofan.

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TEST=ctest/test-run-machops/RunFloat64SubImm1,
     RunFloat64SubImm2, RunFloat64MulImm, RunFloat64Compare

BUG=
R=paul.lind@imgtec.com

Review URL: https://codereview.chromium.org/646923003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24536 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
This commit is contained in:
dusan.milosavljevic@imgtec.com 2014-10-10 18:00:58 +00:00
parent 9595c6104e
commit 8e092181ae
2 changed files with 6 additions and 4 deletions
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9
src/mips/macro-assembler-mips.cc
View File

@ -23,7 +23,8 @@ namespace internal {
MacroAssembler::MacroAssembler(Isolate* arg_isolate, void* buffer, int size)
: Assembler(arg_isolate, buffer, size),
generating_stub_(false),
has_frame_(false) {
has_frame_(false),
has_double_zero_reg_set_(false) {
if (isolate() != NULL) {
code_object_ = Handle<Object>(isolate()->heap()->undefined_value(),
isolate());
@ -1530,10 +1531,9 @@ void MacroAssembler::Move(FPURegister dst, double imm) {
static const DoubleRepresentation zero(0.0);
DoubleRepresentation value_rep(imm);
// Handle special values first.
bool force_load = dst.is(kDoubleRegZero);
if (value_rep == zero && !force_load) {
if (value_rep == zero && has_double_zero_reg_set_) {
mov_d(dst, kDoubleRegZero);
} else if (value_rep == minus_zero && !force_load) {
} else if (value_rep == minus_zero && has_double_zero_reg_set_) {
neg_d(dst, kDoubleRegZero);
} else {
uint32_t lo, hi;
@ -1554,6 +1554,7 @@ void MacroAssembler::Move(FPURegister dst, double imm) {
} else {
Mthc1(zero_reg, dst);
}
if (dst.is(kDoubleRegZero)) has_double_zero_reg_set_ = true;
}
}

1
src/mips/macro-assembler-mips.h
View File

@ -1665,6 +1665,7 @@ const Operand& rt = Operand(zero_reg), BranchDelaySlot bd = PROTECT
bool generating_stub_;
bool has_frame_;
bool has_double_zero_reg_set_;
// This handle will be patched with the code object on installation.
Handle<Object> code_object_;