gallium: remove TGSI FENCE opcodes

use MEMBAR instead

Reviewed-by: Roland Scheidegger <sroland@vmware.com>

5 files changed, 13 insertions, 56 deletions

diff --git a/src/gallium/auxiliary/tgsi/tgsi_info.c b/src/gallium/auxiliary/tgsi/tgsi_info.c
index 38c4a81d03..396e190017 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_info.c
+++ b/src/gallium/auxiliary/tgsi/tgsi_info.c
@@ -201,9 +201,9 @@ static const struct tgsi_opcode_info opcode_info[TGSI_OPCODE_LAST] =
    { 1, 1, 0, 0, 0, 0, 0, COMP, "ISSG", TGSI_OPCODE_ISSG },
    { 1, 2, 0, 0, 0, 0, 0, OTHR, "LOAD", TGSI_OPCODE_LOAD },
    { 1, 2, 0, 1, 0, 0, 0, OTHR, "STORE", TGSI_OPCODE_STORE },
-   { 1, 0, 0, 0, 0, 0, 0, OTHR, "MFENCE", TGSI_OPCODE_MFENCE },
-   { 1, 0, 0, 0, 0, 0, 0, OTHR, "LFENCE", TGSI_OPCODE_LFENCE },
-   { 1, 0, 0, 0, 0, 0, 0, OTHR, "SFENCE", TGSI_OPCODE_SFENCE },
+   { 1, 0, 0, 0, 0, 0, 0, OTHR, "", 163 }, /* removed */
+   { 1, 0, 0, 0, 0, 0, 0, OTHR, "", 164 }, /* removed */
+   { 1, 0, 0, 0, 0, 0, 0, OTHR, "", 165 }, /* removed */
    { 0, 0, 0, 0, 0, 0, 0, OTHR, "BARRIER", TGSI_OPCODE_BARRIER },
 
    { 1, 3, 0, 1, 0, 0, 0, OTHR, "ATOMUADD", TGSI_OPCODE_ATOMUADD },
diff --git a/src/gallium/docs/source/tgsi.rst b/src/gallium/docs/source/tgsi.rst
index 83ef785394..be1f411b91 100644
--- a/src/gallium/docs/source/tgsi.rst
+++ b/src/gallium/docs/source/tgsi.rst
@@ -2635,36 +2635,6 @@ These opcodes are intended for communication between threads running
 within the same compute grid.  For now they're only valid in compute
 programs.
 
-.. opcode:: MFENCE - Memory fence
-
-  Syntax: ``MFENCE resource``
-
-  Example: ``MFENCE RES[0]``
-
-  This opcode forces strong ordering between any memory access
-  operations that affect the specified resource.  This means that
-  previous loads and stores (and only those) will be performed and
-  visible to other threads before the program execution continues.
-
-
-.. opcode:: LFENCE - Load memory fence
-
-  Syntax: ``LFENCE resource``
-
-  Example: ``LFENCE RES[0]``
-
-  Similar to MFENCE, but it only affects the ordering of memory loads.
-
-
-.. opcode:: SFENCE - Store memory fence
-
-  Syntax: ``SFENCE resource``
-
-  Example: ``SFENCE RES[0]``
-
-  Similar to MFENCE, but it only affects the ordering of memory stores.
-
-
 .. opcode:: BARRIER - Thread group barrier
 
   ``BARRIER``
diff --git a/src/gallium/drivers/nouveau/codegen/nv50_ir_from_tgsi.cpp b/src/gallium/drivers/nouveau/codegen/nv50_ir_from_tgsi.cpp
index 0b1f550334..23c7d106e3 100644
--- a/src/gallium/drivers/nouveau/codegen/nv50_ir_from_tgsi.cpp
+++ b/src/gallium/drivers/nouveau/codegen/nv50_ir_from_tgsi.cpp
@@ -994,9 +994,6 @@ static nv50_ir::operation translateOpcode(uint opcode)
 static uint16_t opcodeToSubOp(uint opcode)
 {
    switch (opcode) {
-   case TGSI_OPCODE_LFENCE:   return NV50_IR_SUBOP_MEMBAR(L, GL);
-   case TGSI_OPCODE_SFENCE:   return NV50_IR_SUBOP_MEMBAR(S, GL);
-   case TGSI_OPCODE_MFENCE:   return NV50_IR_SUBOP_MEMBAR(M, GL);
    case TGSI_OPCODE_ATOMUADD: return NV50_IR_SUBOP_ATOM_ADD;
    case TGSI_OPCODE_ATOMXCHG: return NV50_IR_SUBOP_ATOM_EXCH;
    case TGSI_OPCODE_ATOMCAS:  return NV50_IR_SUBOP_ATOM_CAS;
@@ -3783,13 +3780,6 @@ Converter::handleInstruction(const struct tgsi_full_instruction *insn)
       geni->fixed = 1;
       geni->subOp = NV50_IR_SUBOP_BAR_SYNC;
       break;
-   case TGSI_OPCODE_MFENCE:
-   case TGSI_OPCODE_LFENCE:
-   case TGSI_OPCODE_SFENCE:
-      geni = mkOp(OP_MEMBAR, TYPE_NONE, NULL);
-      geni->fixed = 1;
-      geni->subOp = tgsi::opcodeToSubOp(tgsi.getOpcode());
-      break;
    case TGSI_OPCODE_MEMBAR:
    {
       uint32_t level = tgsi.getSrc(0).getValueU32(0, info);
diff --git a/src/gallium/drivers/r600/r600_shader.c b/src/gallium/drivers/r600/r600_shader.c
index 74f5add119..d4eece3e72 100644
--- a/src/gallium/drivers/r600/r600_shader.c
+++ b/src/gallium/drivers/r600/r600_shader.c
@@ -9231,9 +9231,9 @@ static const struct r600_shader_tgsi_instruction r600_shader_tgsi_instruction[]
 	[TGSI_OPCODE_ISSG]	= { 0, tgsi_issg},
 	[TGSI_OPCODE_LOAD]	= { ALU_OP0_NOP, tgsi_unsupported},
 	[TGSI_OPCODE_STORE]	= { ALU_OP0_NOP, tgsi_unsupported},
-	[TGSI_OPCODE_MFENCE]	= { ALU_OP0_NOP, tgsi_unsupported},
-	[TGSI_OPCODE_LFENCE]	= { ALU_OP0_NOP, tgsi_unsupported},
-	[TGSI_OPCODE_SFENCE]	= { ALU_OP0_NOP, tgsi_unsupported},
+	[163]	= { ALU_OP0_NOP, tgsi_unsupported},
+	[164]	= { ALU_OP0_NOP, tgsi_unsupported},
+	[165]	= { ALU_OP0_NOP, tgsi_unsupported},
 	[TGSI_OPCODE_BARRIER]	= { ALU_OP0_NOP, tgsi_unsupported},
 	[TGSI_OPCODE_ATOMUADD]	= { ALU_OP0_NOP, tgsi_unsupported},
 	[TGSI_OPCODE_ATOMXCHG]	= { ALU_OP0_NOP, tgsi_unsupported},
@@ -9429,9 +9429,9 @@ static const struct r600_shader_tgsi_instruction eg_shader_tgsi_instruction[] =
 	[TGSI_OPCODE_ISSG]	= { 0, tgsi_issg},
 	[TGSI_OPCODE_LOAD]	= { ALU_OP0_NOP, tgsi_unsupported},
 	[TGSI_OPCODE_STORE]	= { ALU_OP0_NOP, tgsi_unsupported},
-	[TGSI_OPCODE_MFENCE]	= { ALU_OP0_NOP, tgsi_unsupported},
-	[TGSI_OPCODE_LFENCE]	= { ALU_OP0_NOP, tgsi_unsupported},
-	[TGSI_OPCODE_SFENCE]	= { ALU_OP0_NOP, tgsi_unsupported},
+	[163]	= { ALU_OP0_NOP, tgsi_unsupported},
+	[164]	= { ALU_OP0_NOP, tgsi_unsupported},
+	[165]	= { ALU_OP0_NOP, tgsi_unsupported},
 	[TGSI_OPCODE_BARRIER]	= { ALU_OP0_GROUP_BARRIER, tgsi_barrier},
 	[TGSI_OPCODE_ATOMUADD]	= { ALU_OP0_NOP, tgsi_unsupported},
 	[TGSI_OPCODE_ATOMXCHG]	= { ALU_OP0_NOP, tgsi_unsupported},
@@ -9652,9 +9652,9 @@ static const struct r600_shader_tgsi_instruction cm_shader_tgsi_instruction[] =
 	[TGSI_OPCODE_ISSG]	= { 0, tgsi_issg},
 	[TGSI_OPCODE_LOAD]	= { ALU_OP0_NOP, tgsi_unsupported},
 	[TGSI_OPCODE_STORE]	= { ALU_OP0_NOP, tgsi_unsupported},
-	[TGSI_OPCODE_MFENCE]	= { ALU_OP0_NOP, tgsi_unsupported},
-	[TGSI_OPCODE_LFENCE]	= { ALU_OP0_NOP, tgsi_unsupported},
-	[TGSI_OPCODE_SFENCE]	= { ALU_OP0_NOP, tgsi_unsupported},
+	[163]	= { ALU_OP0_NOP, tgsi_unsupported},
+	[164]	= { ALU_OP0_NOP, tgsi_unsupported},
+	[165]	= { ALU_OP0_NOP, tgsi_unsupported},
 	[TGSI_OPCODE_BARRIER]	= { ALU_OP0_GROUP_BARRIER, tgsi_barrier},
 	[TGSI_OPCODE_ATOMUADD]	= { ALU_OP0_NOP, tgsi_unsupported},
 	[TGSI_OPCODE_ATOMXCHG]	= { ALU_OP0_NOP, tgsi_unsupported},
diff --git a/src/gallium/include/pipe/p_shader_tokens.h b/src/gallium/include/pipe/p_shader_tokens.h
index 502446dc85..2254d3fdb7 100644
--- a/src/gallium/include/pipe/p_shader_tokens.h
+++ b/src/gallium/include/pipe/p_shader_tokens.h
@@ -506,10 +506,7 @@ struct tgsi_property_data {
 
 #define TGSI_OPCODE_LOAD                161
 #define TGSI_OPCODE_STORE               162
-
-#define TGSI_OPCODE_MFENCE              163
-#define TGSI_OPCODE_LFENCE              164
-#define TGSI_OPCODE_SFENCE              165
+/* gap */
 #define TGSI_OPCODE_BARRIER             166
 
 #define TGSI_OPCODE_ATOMUADD            167