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Fixes 32bit element selection for SHUFP

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Ryan Houdek authored and Stefanos Kornilios Mitsis Poiitidis committed 2020-03-06 07:56:18 +02:00
1 parent cde683eff4
commit 9870547d50
1 file changed
+10 -2
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Source/Interface/Core/OpcodeDispatcher.cpp
+10 -2
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@@ -2554,11 +2554,19 @@ void OpDispatchBuilder::SHUFOp(OpcodeArgs) {
Srcs[i] = Src2;
}
// 32bit:
// [31:0] = Src1[Selection]
// [63:32] = Src1[Selection]
// [95:64] = Src2[Selection]
// [127:96] = Src2[Selection]
// 64bit:
// [63:0] = Src1[Selection]
// [127:64] = Src2[Selection]
uint8_t SelectionMask = NumElements - 1;
uint8_t ShiftAmount = __builtin_popcount(SelectionMask);
for (uint8_t Element = 0; Element < NumElements; ++Element) {
Dest = _VInsElement(Size, ElementSize, Element, Shuffle & 0b1, Dest, Srcs[Element]);
Shuffle >>= 1;
Dest = _VInsElement(Size, ElementSize, Element, Shuffle & SelectionMask, Dest, Srcs[Element]);
Shuffle >>= ShiftAmount;
}
StoreResult(FPRClass, Op, Dest, -1);