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PACK FLOAT16 seems correct.

This commit is contained in:
Ben Vanik 2014-06-10 21:36:13 -07:00
parent 713cfcb429
commit 4089f405af
1 changed files with 0 additions and 2 deletions
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2
src/alloy/backend/x64/x64_sequences.cc
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@ -4730,14 +4730,12 @@ EMITTER(PACK, MATCH(I<OPCODE_PACK, V128<>, V128<>>)) {
static void EmitFLOAT16_2(X64Emitter& e, const EmitArgType& i) { static void EmitFLOAT16_2(X64Emitter& e, const EmitArgType& i) {
// http://blogs.msdn.com/b/chuckw/archive/2012/09/11/directxmath-f16c-and-fma.aspx // http://blogs.msdn.com/b/chuckw/archive/2012/09/11/directxmath-f16c-and-fma.aspx
// dest = [(src1.x | src1.y), 0, 0, 0] // dest = [(src1.x | src1.y), 0, 0, 0]
e.db(0xCC);
e.vcvtps2ph(e.xmm0, i.src1, B00000011); e.vcvtps2ph(e.xmm0, i.src1, B00000011);
e.vxorps(i.dest, i.dest); e.vxorps(i.dest, i.dest);
e.vpblendw(i.dest, e.xmm0, B00000011); e.vpblendw(i.dest, e.xmm0, B00000011);
} }
static void EmitFLOAT16_4(X64Emitter& e, const EmitArgType& i) { static void EmitFLOAT16_4(X64Emitter& e, const EmitArgType& i) {
// dest = [(src1.x | src1.y), (src1.z | src1.w), 0, 0] // dest = [(src1.x | src1.y), (src1.z | src1.w), 0, 0]
e.db(0xCC);
e.vcvtps2ph(e.xmm0, i.src1, B00000011); e.vcvtps2ph(e.xmm0, i.src1, B00000011);
e.vxorps(i.dest, i.dest); e.vxorps(i.dest, i.dest);
e.vpblendw(i.dest, e.xmm0, B00001111); e.vpblendw(i.dest, e.xmm0, B00001111);