From: Matt Turner <mattst88@gmail.com>
Date: Wed, 10 Apr 2013 00:56:19 +0000 (-0700)
Subject: i965: Add support for emitting and disassembling bit instructions.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=fa958182b7e7a9a177ec45ffd39d42f15ca756b3;p=mesa.git

i965: Add support for emitting and disassembling bit instructions.

Specifically
   bfe - for bitfieldExtract()
   bfi1 and bfi2 - for bitfieldInsert()
   bfrev - for bitfieldReverse()
   cbit - for bitCount()
   fbh - for findMSB()
   fbl - for findLSB()

Reviewed-by: Chris Forbes <chrisf@ijw.co.nz>
---

diff --git a/src/mesa/drivers/dri/i965/brw_defines.h b/src/mesa/drivers/dri/i965/brw_defines.h
index b0075202171..e37805d4ad6 100644
--- a/src/mesa/drivers/dri/i965/brw_defines.h
+++ b/src/mesa/drivers/dri/i965/brw_defines.h
@@ -647,6 +647,10 @@ enum opcode {
    BRW_OPCODE_CMPN =	17,
    BRW_OPCODE_F32TO16 = 19,
    BRW_OPCODE_F16TO32 = 20,
+   BRW_OPCODE_BFREV =	23,
+   BRW_OPCODE_BFE =	24,
+   BRW_OPCODE_BFI1 =	25,
+   BRW_OPCODE_BFI2 =	26,
    BRW_OPCODE_JMPI =	32,
    BRW_OPCODE_IF =	34,
    BRW_OPCODE_IFF =	35,
@@ -676,6 +680,9 @@ enum opcode {
    BRW_OPCODE_MAC =	72,
    BRW_OPCODE_MACH =	73,
    BRW_OPCODE_LZD =	74,
+   BRW_OPCODE_FBH =	75,
+   BRW_OPCODE_FBL =	76,
+   BRW_OPCODE_CBIT =	77,
    BRW_OPCODE_SAD2 =	80,
    BRW_OPCODE_SADA2 =	81,
    BRW_OPCODE_DP4 =	84,
diff --git a/src/mesa/drivers/dri/i965/brw_disasm.c b/src/mesa/drivers/dri/i965/brw_disasm.c
index 3e7c613eb05..18e6c9d78fc 100644
--- a/src/mesa/drivers/dri/i965/brw_disasm.c
+++ b/src/mesa/drivers/dri/i965/brw_disasm.c
@@ -43,6 +43,10 @@ const struct opcode_desc opcode_descs[128] = {
     [BRW_OPCODE_LZD] = { .name = "lzd", .nsrc = 1, .ndst = 1 },
     [BRW_OPCODE_F32TO16] = { .name = "f32to16", .nsrc = 1, .ndst = 1 },
     [BRW_OPCODE_F16TO32] = { .name = "f16to32", .nsrc = 1, .ndst = 1 },
+    [BRW_OPCODE_BFREV] = { .name = "bfrev", .nsrc = 1, .ndst = 1},
+    [BRW_OPCODE_FBH] = { .name = "fbh", .nsrc = 1, .ndst = 1},
+    [BRW_OPCODE_FBL] = { .name = "fbl", .nsrc = 1, .ndst = 1},
+    [BRW_OPCODE_CBIT] = { .name = "cbit", .nsrc = 1, .ndst = 1},
 
     [BRW_OPCODE_MUL] = { .name = "mul", .nsrc = 2, .ndst = 1 },
     [BRW_OPCODE_MAC] = { .name = "mac", .nsrc = 2, .ndst = 1 },
@@ -70,6 +74,9 @@ const struct opcode_desc opcode_descs[128] = {
     [BRW_OPCODE_ASR] = { .name = "asr", .nsrc = 2, .ndst = 1 },
     [BRW_OPCODE_CMP] = { .name = "cmp", .nsrc = 2, .ndst = 1 },
     [BRW_OPCODE_CMPN] = { .name = "cmpn", .nsrc = 2, .ndst = 1 },
+    [BRW_OPCODE_BFE] = { .name = "bfe", .nsrc = 3, .ndst = 1},
+    [BRW_OPCODE_BFI1] = { .name = "bfe1", .nsrc = 2, .ndst = 1},
+    [BRW_OPCODE_BFI2] = { .name = "bfe2", .nsrc = 3, .ndst = 1},
 
     [BRW_OPCODE_SEND] = { .name = "send", .nsrc = 1, .ndst = 1 },
     [BRW_OPCODE_SENDC] = { .name = "sendc", .nsrc = 1, .ndst = 1 },
diff --git a/src/mesa/drivers/dri/i965/brw_eu.h b/src/mesa/drivers/dri/i965/brw_eu.h
index 9683b1314da..ce8843d8a6e 100644
--- a/src/mesa/drivers/dri/i965/brw_eu.h
+++ b/src/mesa/drivers/dri/i965/brw_eu.h
@@ -176,6 +176,13 @@ ALU2(LINE)
 ALU2(PLN)
 ALU3(MAD)
 ALU3(LRP)
+ALU1(BFREV)
+ALU3(BFE)
+ALU2(BFI1)
+ALU3(BFI2)
+ALU1(FBH)
+ALU1(FBL)
+ALU1(CBIT)
 
 ROUND(RNDZ)
 ROUND(RNDE)
diff --git a/src/mesa/drivers/dri/i965/brw_eu_emit.c b/src/mesa/drivers/dri/i965/brw_eu_emit.c
index bd02270a173..31d97ca5c28 100644
--- a/src/mesa/drivers/dri/i965/brw_eu_emit.c
+++ b/src/mesa/drivers/dri/i965/brw_eu_emit.c
@@ -957,6 +957,13 @@ ALU2(LINE)
 ALU2(PLN)
 ALU3(MAD)
 ALU3(LRP)
+ALU1(BFREV)
+ALU3(BFE)
+ALU2(BFI1)
+ALU3(BFI2)
+ALU1(FBH)
+ALU1(FBL)
+ALU1(CBIT)
 
 ROUND(RNDZ)
 ROUND(RNDE)