Merge pull request #18235 from unknownbrackets/ir-vdet

irjit: Handle VDet
hrydgard · Sep 25, 2023 · 9f62a3f · 9f62a3f
2 parents 5145698 + e104a28
commit 9f62a3f
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Showing 2 changed files with 15 additions and 2 deletions.
diff --git a/Core/MIPS/IR/IRCompVFPU.cpp b/Core/MIPS/IR/IRCompVFPU.cpp
@@ -1771,7 +1771,20 @@ namespace MIPSComp {
 		// d[0] = s[0]*t[1] - s[1]*t[0]
 		// Note: this operates on two vectors, not a 2x2 matrix.
 
-		DISABLE;
+		VectorSize sz = GetVecSize(op);
+		if (sz != V_Pair)
+			DISABLE;
+
+		u8 sregs[4], dregs[4], tregs[4];
+		GetVectorRegsPrefixS(sregs, sz, _VS);
+		GetVectorRegsPrefixT(tregs, sz, _VT);
+		GetVectorRegsPrefixD(dregs, V_Single, _VD);
+
+		ir.Write(IROp::FMul, IRVTEMP_0, sregs[1], tregs[0]);
+		ir.Write(IROp::FMul, dregs[0], sregs[0], tregs[1]);
+		ir.Write(IROp::FSub, dregs[0], dregs[0], IRVTEMP_0);
+
+		ApplyPrefixD(dregs, V_Single, _VD);
 	}
 
 	void IRFrontend::Comp_Vi2x(MIPSOpcode op) {

diff --git a/Core/MIPS/MIPSIntVFPU.cpp b/Core/MIPS/MIPSIntVFPU.cpp
@@ -1446,7 +1446,7 @@ namespace MIPSInt
 			d[0] += s[2] * t[2] + s[3] * t[3];
 		}
 
-		ApplyPrefixD(d, sz);
+		ApplyPrefixD(d, V_Single);
 		WriteVector(d, V_Single, vd);
 		PC += 4;
 		EatPrefixes();