Initial implementation of OPCODE_IF/ELSE/ENDIF instructions.
diff --git a/src/mesa/shader/prog_instruction.c b/src/mesa/shader/prog_instruction.c
index 1379018..3de71b8 100644
--- a/src/mesa/shader/prog_instruction.c
+++ b/src/mesa/shader/prog_instruction.c
@@ -130,11 +130,14 @@
    { OPCODE_DP4,    "DP4",   2 },
    { OPCODE_DPH,    "DPH",   2 },
    { OPCODE_DST,    "DST",   2 },
+   { OPCODE_ELSE,   "ELSE",  0 },
    { OPCODE_END,    "END",   0 },
+   { OPCODE_ENDIF,  "ENDIF", 0 },
    { OPCODE_EX2,    "EX2",   1 },
    { OPCODE_EXP,    "EXP",   1 },
    { OPCODE_FLR,    "FLR",   1 },
    { OPCODE_FRC,    "FRC",   1 },
+   { OPCODE_IF,     "IF",    0 },
    { OPCODE_INT,    "INT",   1 },
    { OPCODE_KIL,    "KIL",   1 },
    { OPCODE_KIL_NV, "KIL",   0 },