diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Target/X86/X86ISelLowering.cpp | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp index 24b0629..4ab5fe7 100644 --- a/lib/Target/X86/X86ISelLowering.cpp +++ b/lib/Target/X86/X86ISelLowering.cpp @@ -4703,30 +4703,30 @@ SDValue X86TargetLowering::LowerUINT_TO_FP(SDValue Op, SelectionDAG &DAG) { static const __m128i exp = { 0x4330000045300000ULL, 0 }; static const __m128d bias = { 0x1.0p84, 0x1.0p52 }; - //copy ints to xmm registers + // copy ints to xmm registers __m128i xh = _mm_cvtsi32_si128( hi ); __m128i xl = _mm_cvtsi32_si128( lo ); - //combine into low half of a single xmm register + // combine into low half of a single xmm register __m128i x = _mm_unpacklo_epi32( xh, xl ); __m128d d; double sd; - //merge in appropriate exponents to give the integer bits the + // merge in appropriate exponents to give the integer bits the // right magnitude x = _mm_unpacklo_epi32( x, exp ); - //subtract away the biases to deal with the IEEE-754 double precision - //implicit 1 + // subtract away the biases to deal with the IEEE-754 double precision + // implicit 1 d = _mm_sub_pd( (__m128d) x, bias ); - //All conversions up to here are exact. The correctly rounded result is + // All conversions up to here are exact. The correctly rounded result is // calculated using the - //current rounding mode using the following horizontal add. + // current rounding mode using the following horizontal add. d = _mm_add_sd( d, _mm_unpackhi_pd( d, d ) ); _mm_store_sd( &sd, d ); //since we are returning doubles in XMM, this - //store doesn't really need to be here (except maybe to zero the other - //double) + // store doesn't really need to be here (except maybe to zero the other + // double) return sd; } */ |