[PATCH v2 3/5] BPF: Add NEG operation

[Richard Henderson via llvm-commits]

Signed-off-by: Richard Henderson <rth at twiddle.net>
---
 lib/Target/BPF/BPFInstrInfo.td | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/lib/Target/BPF/BPFInstrInfo.td b/lib/Target/BPF/BPFInstrInfo.td
index 7899193..5b9bba6 100644
--- a/lib/Target/BPF/BPFInstrInfo.td
+++ b/lib/Target/BPF/BPFInstrInfo.td
@@ -166,6 +166,18 @@ let Constraints = "$dst = $srcd" in {
     defm SLL : ALU<0x6, "sll", shl>;
     defm SRL : ALU<0x7, "srl", srl>;
     defm SRA : ALU<0xc, "sra", sra>;
+
+    def NEG_r
+      : F_COF<7 /* BPF_ALU64 */, 8 /* BPF_NEG */, 0,
+              (outs GPR:$dst), (ins GPR:$srcd),
+              "neg\t$dst",
+              [(set GPR:$dst, (ineg GPR:$srcd))]> {
+      bits<4> dst;
+      let BPFDst = dst;
+      let BPFSrc = 0;
+      let BPFOff = 0;
+      let BPFImm = 0;
+    }
   }
   let isCommutable = 1 in {
     defm MUL : ALU<0x2, "mul", mul>;
-- 
2.5.5