================
@@ -4555,22 +4471,59 @@ bool InterpretBuiltin(InterpState &S, CodePtr OpPC,
const CallExpr *Call,
case X86::BI__builtin_ia32_pshufb128:
case X86::BI__builtin_ia32_pshufb256:
case X86::BI__builtin_ia32_pshufb512:
- return interp__builtin_ia32_pshufb(S, OpPC, Call);
+ return interp__builtin_ia32_shuffle_generic(
+ S, OpPC, Call, [](unsigned DstIdx, unsigned ShuffleMask) {
+ uint8_t Ctlb = static_cast<uint8_t>(ShuffleMask);
+ if (Ctlb & 0x80)
+ return std::make_pair(0, -1);
+
+ unsigned LaneBase = (DstIdx / 16) * 16;
+ unsigned SrcOffset = Ctlb & 0x0F;
+ unsigned SrcIdx = LaneBase + SrcOffset;
+ return std::make_pair(0, static_cast<int>(SrcIdx));
+ });
case X86::BI__builtin_ia32_pshuflw:
case X86::BI__builtin_ia32_pshuflw256:
case X86::BI__builtin_ia32_pshuflw512:
- return interp__builtin_ia32_pshuf(S, OpPC, Call, false);
+ return interp__builtin_ia32_shuffle_generic(
+ S, OpPC, Call, [](unsigned DstIdx, unsigned ShuffleMask) {
+ unsigned LaneBase = (DstIdx / 8) * 8;
+ unsigned LaneIdx = DstIdx % 8;
+ if (LaneIdx < 4) {
+ unsigned Sel = (ShuffleMask >> (2 * LaneIdx)) & 0x3;
+ return std::make_pair(0, static_cast<int>(LaneBase + Sel));
+ }
+
+ return std::make_pair(0, static_cast<int>(DstIdx));
+ });
case X86::BI__builtin_ia32_pshufhw:
case X86::BI__builtin_ia32_pshufhw256:
case X86::BI__builtin_ia32_pshufhw512:
- return interp__builtin_ia32_pshuf(S, OpPC, Call, true);
+ return interp__builtin_ia32_shuffle_generic(
+ S, OpPC, Call, [](unsigned DstIdx, unsigned ShuffleMask) {
+ unsigned LaneBase = (DstIdx / 8) * 8;
+ unsigned LaneIdx = DstIdx % 8;
+ if (LaneIdx >= 4) {
+ unsigned Sel = (ShuffleMask >> (2 * (LaneIdx - 4))) & 0x3;
+ return std::make_pair(0, static_cast<int>(LaneBase + 4 + Sel));
+ }
+
+ return std::make_pair(0, static_cast<int>(DstIdx));
+ }
+ });
----------------
TelGome wrote:
Sorry, I'm not very familiar with the clang-format. I've checked the code and
removed the extra brace.
https://github.com/llvm/llvm-project/pull/167236
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