AuroraMiddleware/v8
1
0
Fork 0
Code Issues 2 Pull Requests Releases Wiki Activity

MIPS: Fixed some soft-float bugs.

Browse Source 
TEST=cctest/test-api/ExternalUnsignedIntArray

BUG=

Review URL: https://codereview.chromium.org/13165007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@14101 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
This commit is contained in:
plind44@gmail.com 2013-04-01 16:06:52 +00:00
parent e53986d203
commit d15321f2f8
1 changed files with 10 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
src/mips/lithium-codegen-mips.cc
View File

@ -4578,10 +4578,11 @@ void LCodeGen::DoNumberTagU(LNumberTagU* instr) {
// Convert unsigned integer with specified number of leading zeroes in binary
// representation to IEEE 754 double.
// Integer to convert is passed in register hiword.
// Integer to convert is passed in register src.
// Resulting double is returned in registers hiword:loword.
// This functions does not work correctly for 0.
static void GenerateUInt2Double(MacroAssembler* masm,
Register src,
Register hiword,
Register loword,
Register scratch,
@ -4595,12 +4596,12 @@ static void GenerateUInt2Double(MacroAssembler* masm,
kBitsPerInt - mantissa_shift_for_hi_word;
masm->li(scratch, Operand(biased_exponent << HeapNumber::kExponentShift));
if (mantissa_shift_for_hi_word > 0) {
masm->sll(loword, hiword, mantissa_shift_for_lo_word);
masm->srl(hiword, hiword, mantissa_shift_for_hi_word);
masm->sll(loword, src, mantissa_shift_for_lo_word);
masm->srl(hiword, src, mantissa_shift_for_hi_word);
masm->Or(hiword, scratch, hiword);
} else {
masm->mov(loword, zero_reg);
masm->sll(hiword, hiword, mantissa_shift_for_hi_word);
masm->sll(hiword, src, mantissa_shift_for_hi_word);
masm->Or(hiword, scratch, hiword);
}
@ -4651,17 +4652,17 @@ void LCodeGen::DoDeferredNumberTagI(LInstruction* instr,
__ mtc1(src, dbl_scratch);
__ Cvt_d_uw(dbl_scratch, dbl_scratch, f22);
} else {
Label no_leading_zero, done;
Label no_leading_zero, convert_done;
__ And(at, src, Operand(0x80000000));
__ Branch(&no_leading_zero, ne, at, Operand(zero_reg));
// Integer has one leading zeros.
GenerateUInt2Double(masm(), sfpd_hi, sfpd_lo, t0, 1);
__ Branch(&done);
GenerateUInt2Double(masm(), src, sfpd_hi, sfpd_lo, t0, 1);
__ Branch(&convert_done);
__ bind(&no_leading_zero);
GenerateUInt2Double(masm(), sfpd_hi, sfpd_lo, t0, 0);
__ Branch(&done);
GenerateUInt2Double(masm(), src, sfpd_hi, sfpd_lo, t0, 0);
__ bind(&convert_done);
}
}