[Mesa-dev] [PATCH 22/23] intel/ir: Drop hard-coded correspondence between IR and HW opcodes.
Francisco Jerez
currojerez at riseup.net
Tue Jun 12 02:26:14 UTC 2018
Having the IR opcodes locked to their hardware representation is risky
because it causes opcodes as different as BRC and IFF to compare equal
at the IR level (luckily the back-end only ever uses one opcode from
each group, right now), and it prevents us from supporting
instructions that change their hardware representation across
generations, which will become a serious problem in the future.
---
src/intel/compiler/brw_eu_defines.h | 174 +++++++++++++++++-------------------
src/intel/compiler/brw_shader.cpp | 2 +-
2 files changed, 83 insertions(+), 93 deletions(-)
diff --git a/src/intel/compiler/brw_eu_defines.h b/src/intel/compiler/brw_eu_defines.h
index ff1a3ac2075..02c6090d35d 100644
--- a/src/intel/compiler/brw_eu_defines.h
+++ b/src/intel/compiler/brw_eu_defines.h
@@ -188,98 +188,88 @@ enum PACKED gen10_align1_3src_dst_horizontal_stride {
/** @} */
enum opcode {
- /* These are the actual hardware opcodes. */
- BRW_OPCODE_ILLEGAL = 0,
- BRW_OPCODE_MOV = 1,
- BRW_OPCODE_SEL = 2,
- BRW_OPCODE_MOVI = 3, /**< G45+ */
- BRW_OPCODE_NOT = 4,
- BRW_OPCODE_AND = 5,
- BRW_OPCODE_OR = 6,
- BRW_OPCODE_XOR = 7,
- BRW_OPCODE_SHR = 8,
- BRW_OPCODE_SHL = 9,
- BRW_OPCODE_DIM = 10, /**< Gen7.5 only */ /* Reused */
- BRW_OPCODE_SMOV = 10, /**< Gen8+ */ /* Reused */
- /* Reserved - 11 */
- BRW_OPCODE_ASR = 12,
- /* Reserved - 13-15 */
- BRW_OPCODE_CMP = 16,
- BRW_OPCODE_CMPN = 17,
- BRW_OPCODE_CSEL = 18, /**< Gen8+ */
- BRW_OPCODE_F32TO16 = 19, /**< Gen7 only */
- BRW_OPCODE_F16TO32 = 20, /**< Gen7 only */
- /* Reserved - 21-22 */
- BRW_OPCODE_BFREV = 23, /**< Gen7+ */
- BRW_OPCODE_BFE = 24, /**< Gen7+ */
- BRW_OPCODE_BFI1 = 25, /**< Gen7+ */
- BRW_OPCODE_BFI2 = 26, /**< Gen7+ */
- /* Reserved - 27-31 */
- BRW_OPCODE_JMPI = 32,
- BRW_OPCODE_BRD = 33, /**< Gen7+ */
- BRW_OPCODE_IF = 34,
- BRW_OPCODE_IFF = 35, /**< Pre-Gen6 */ /* Reused */
- BRW_OPCODE_BRC = 35, /**< Gen7+ */ /* Reused */
- BRW_OPCODE_ELSE = 36,
- BRW_OPCODE_ENDIF = 37,
- BRW_OPCODE_DO = 38, /**< Pre-Gen6 */ /* Reused */
- BRW_OPCODE_CASE = 38, /**< Gen6 only */ /* Reused */
- BRW_OPCODE_WHILE = 39,
- BRW_OPCODE_BREAK = 40,
- BRW_OPCODE_CONTINUE = 41,
- BRW_OPCODE_HALT = 42,
- BRW_OPCODE_CALLA = 43, /**< Gen7.5+ */
- BRW_OPCODE_MSAVE = 44, /**< Pre-Gen6 */ /* Reused */
- BRW_OPCODE_CALL = 44, /**< Gen6+ */ /* Reused */
- BRW_OPCODE_MREST = 45, /**< Pre-Gen6 */ /* Reused */
- BRW_OPCODE_RET = 45, /**< Gen6+ */ /* Reused */
- BRW_OPCODE_PUSH = 46, /**< Pre-Gen6 */ /* Reused */
- BRW_OPCODE_FORK = 46, /**< Gen6 only */ /* Reused */
- BRW_OPCODE_GOTO = 46, /**< Gen8+ */ /* Reused */
- BRW_OPCODE_POP = 47, /**< Pre-Gen6 */
- BRW_OPCODE_WAIT = 48,
- BRW_OPCODE_SEND = 49,
- BRW_OPCODE_SENDC = 50,
- BRW_OPCODE_SENDS = 51, /**< Gen9+ */
- BRW_OPCODE_SENDSC = 52, /**< Gen9+ */
- /* Reserved 53-55 */
- BRW_OPCODE_MATH = 56, /**< Gen6+ */
- /* Reserved 57-63 */
- BRW_OPCODE_ADD = 64,
- BRW_OPCODE_MUL = 65,
- BRW_OPCODE_AVG = 66,
- BRW_OPCODE_FRC = 67,
- BRW_OPCODE_RNDU = 68,
- BRW_OPCODE_RNDD = 69,
- BRW_OPCODE_RNDE = 70,
- BRW_OPCODE_RNDZ = 71,
- BRW_OPCODE_MAC = 72,
- BRW_OPCODE_MACH = 73,
- BRW_OPCODE_LZD = 74,
- BRW_OPCODE_FBH = 75, /**< Gen7+ */
- BRW_OPCODE_FBL = 76, /**< Gen7+ */
- BRW_OPCODE_CBIT = 77, /**< Gen7+ */
- BRW_OPCODE_ADDC = 78, /**< Gen7+ */
- BRW_OPCODE_SUBB = 79, /**< Gen7+ */
- BRW_OPCODE_SAD2 = 80,
- BRW_OPCODE_SADA2 = 81,
- /* Reserved 82-83 */
- BRW_OPCODE_DP4 = 84,
- BRW_OPCODE_DPH = 85,
- BRW_OPCODE_DP3 = 86,
- BRW_OPCODE_DP2 = 87,
- /* Reserved 88 */
- BRW_OPCODE_LINE = 89,
- BRW_OPCODE_PLN = 90, /**< G45+ */
- BRW_OPCODE_MAD = 91, /**< Gen6+ */
- BRW_OPCODE_LRP = 92, /**< Gen6+ */
- BRW_OPCODE_MADM = 93, /**< Gen8+ */
- /* Reserved 94-124 */
- BRW_OPCODE_NENOP = 125, /**< G45 only */
- BRW_OPCODE_NOP = 126,
- /* Reserved 127 */
-
- NUM_BRW_OPCODES = 128,
+ /* These are the actual hardware instructions. */
+ BRW_OPCODE_ILLEGAL,
+ BRW_OPCODE_MOV,
+ BRW_OPCODE_SEL,
+ BRW_OPCODE_MOVI, /**< G45+ */
+ BRW_OPCODE_NOT,
+ BRW_OPCODE_AND,
+ BRW_OPCODE_OR,
+ BRW_OPCODE_XOR,
+ BRW_OPCODE_SHR,
+ BRW_OPCODE_SHL,
+ BRW_OPCODE_DIM, /**< Gen7.5 only */
+ BRW_OPCODE_SMOV, /**< Gen8+ */
+ BRW_OPCODE_ASR,
+ BRW_OPCODE_CMP,
+ BRW_OPCODE_CMPN,
+ BRW_OPCODE_CSEL, /**< Gen8+ */
+ BRW_OPCODE_F32TO16, /**< Gen7 only */
+ BRW_OPCODE_F16TO32, /**< Gen7 only */
+ BRW_OPCODE_BFREV, /**< Gen7+ */
+ BRW_OPCODE_BFE, /**< Gen7+ */
+ BRW_OPCODE_BFI1, /**< Gen7+ */
+ BRW_OPCODE_BFI2, /**< Gen7+ */
+ BRW_OPCODE_JMPI,
+ BRW_OPCODE_BRD, /**< Gen7+ */
+ BRW_OPCODE_IF,
+ BRW_OPCODE_IFF, /**< Pre-Gen6 */
+ BRW_OPCODE_BRC, /**< Gen7+ */
+ BRW_OPCODE_ELSE,
+ BRW_OPCODE_ENDIF,
+ BRW_OPCODE_DO, /**< Pre-Gen6 */
+ BRW_OPCODE_CASE, /**< Gen6 only */
+ BRW_OPCODE_WHILE,
+ BRW_OPCODE_BREAK,
+ BRW_OPCODE_CONTINUE,
+ BRW_OPCODE_HALT,
+ BRW_OPCODE_CALLA, /**< Gen7.5+ */
+ BRW_OPCODE_MSAVE, /**< Pre-Gen6 */
+ BRW_OPCODE_CALL, /**< Gen6+ */
+ BRW_OPCODE_MREST, /**< Pre-Gen6 */
+ BRW_OPCODE_RET, /**< Gen6+ */
+ BRW_OPCODE_PUSH, /**< Pre-Gen6 */
+ BRW_OPCODE_FORK, /**< Gen6 only */
+ BRW_OPCODE_GOTO, /**< Gen8+ */
+ BRW_OPCODE_POP, /**< Pre-Gen6 */
+ BRW_OPCODE_WAIT,
+ BRW_OPCODE_SEND,
+ BRW_OPCODE_SENDC,
+ BRW_OPCODE_SENDS, /**< Gen9+ */
+ BRW_OPCODE_SENDSC, /**< Gen9+ */
+ BRW_OPCODE_MATH, /**< Gen6+ */
+ BRW_OPCODE_ADD,
+ BRW_OPCODE_MUL,
+ BRW_OPCODE_AVG,
+ BRW_OPCODE_FRC,
+ BRW_OPCODE_RNDU,
+ BRW_OPCODE_RNDD,
+ BRW_OPCODE_RNDE,
+ BRW_OPCODE_RNDZ,
+ BRW_OPCODE_MAC,
+ BRW_OPCODE_MACH,
+ BRW_OPCODE_LZD,
+ BRW_OPCODE_FBH, /**< Gen7+ */
+ BRW_OPCODE_FBL, /**< Gen7+ */
+ BRW_OPCODE_CBIT, /**< Gen7+ */
+ BRW_OPCODE_ADDC, /**< Gen7+ */
+ BRW_OPCODE_SUBB, /**< Gen7+ */
+ BRW_OPCODE_SAD2,
+ BRW_OPCODE_SADA2,
+ BRW_OPCODE_DP4,
+ BRW_OPCODE_DPH,
+ BRW_OPCODE_DP3,
+ BRW_OPCODE_DP2,
+ BRW_OPCODE_LINE,
+ BRW_OPCODE_PLN, /**< G45+ */
+ BRW_OPCODE_MAD, /**< Gen6+ */
+ BRW_OPCODE_LRP, /**< Gen6+ */
+ BRW_OPCODE_MADM, /**< Gen8+ */
+ BRW_OPCODE_NENOP, /**< G45 only */
+ BRW_OPCODE_NOP,
+
+ NUM_BRW_OPCODES,
/* These are compiler backend opcodes that get translated into other
* instructions.
diff --git a/src/intel/compiler/brw_shader.cpp b/src/intel/compiler/brw_shader.cpp
index b7fb06ddbd9..f75b86c1b66 100644
--- a/src/intel/compiler/brw_shader.cpp
+++ b/src/intel/compiler/brw_shader.cpp
@@ -156,7 +156,7 @@ const char *
brw_instruction_name(const struct gen_device_info *devinfo, enum opcode op)
{
switch (op) {
- case BRW_OPCODE_ILLEGAL ... BRW_OPCODE_NOP:
+ case 0 ... NUM_BRW_OPCODES - 1:
/* The DO instruction doesn't exist on Gen6+, but we use it to mark the
* start of a loop in the IR.
*/
--
2.16.1
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