tgsi: rename the TGSI fragment kill opcodes

TGSI_OPCODE_KIL and KILP had confusing names.  The former was conditional
kill (if any src component < 0).  The later was unconditional kill.
At one time KILP was supposed to work with NV-style condition
codes/predicates but we never had that in TGSI.

This patch renames both opcodes:
  TGSI_OPCODE_KIL -> KILL_IF   (kill if src.xyzw < 0)
  TGSI_OPCODE_KILP -> KILL     (unconditional kill)

Note: I didn't just transpose the opcode names to help ensure that I
didn't miss updating any code anywhere.

I believe I've updated all the relevant code and comments but I'm
not 100% sure that some drivers had this right in the first place.
For example, the radeon driver might have llvm.AMDGPU.kill and
llvm.AMDGPU.kilp mixed up.  Driver authors should review their code.

Reviewed-by: Jose Fonseca <jfonseca@vmware.com>

5 files changed, 14 insertions, 14 deletions

diff --git a/src/gallium/auxiliary/tgsi/tgsi_exec.c b/src/gallium/auxiliary/tgsi/tgsi_exec.c
index 035b105..bed0852 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_exec.c
+++ b/src/gallium/auxiliary/tgsi/tgsi_exec.c
@@ -1578,8 +1578,8 @@ store_dest(struct tgsi_exec_machine *mach,
  * Kill fragment if any of the four values is less than zero.
  */
 static void
-exec_kil(struct tgsi_exec_machine *mach,
-         const struct tgsi_full_instruction *inst)
+exec_kill_if(struct tgsi_exec_machine *mach,
+             const struct tgsi_full_instruction *inst)
 {
    uint uniquemask;
    uint chan_index;
@@ -1617,7 +1617,7 @@ exec_kil(struct tgsi_exec_machine *mach,
  * Unconditional fragment kill/discard.
  */
 static void
-exec_kilp(struct tgsi_exec_machine *mach,
+exec_kill(struct tgsi_exec_machine *mach,
           const struct tgsi_full_instruction *inst)
 {
    uint kilmask; /* bit 0 = pixel 0, bit 1 = pixel 1, etc */
@@ -3624,12 +3624,12 @@ exec_instruction(
       exec_vector_unary(mach, inst, micro_ddy, TGSI_EXEC_DATA_FLOAT, TGSI_EXEC_DATA_FLOAT);
       break;
 
-   case TGSI_OPCODE_KILP:
-      exec_kilp (mach, inst);
+   case TGSI_OPCODE_KILL:
+      exec_kill (mach, inst);
       break;
 
-   case TGSI_OPCODE_KIL:
-      exec_kil (mach, inst);
+   case TGSI_OPCODE_KILL_IF:
+      exec_kill_if (mach, inst);
       break;
 
    case TGSI_OPCODE_PK2H:
diff --git a/src/gallium/auxiliary/tgsi/tgsi_info.c b/src/gallium/auxiliary/tgsi/tgsi_info.c
index 99b1c66..7e93028 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_info.c
+++ b/src/gallium/auxiliary/tgsi/tgsi_info.c
@@ -76,7 +76,7 @@ static const struct tgsi_opcode_info opcode_info[TGSI_OPCODE_LAST] =
    { 1, 1, 0, 0, 0, 0, REPL, "COS", TGSI_OPCODE_COS },
    { 1, 1, 0, 0, 0, 0, COMP, "DDX", TGSI_OPCODE_DDX },
    { 1, 1, 0, 0, 0, 0, COMP, "DDY", TGSI_OPCODE_DDY },
-   { 0, 0, 0, 0, 0, 0, NONE, "KILP", TGSI_OPCODE_KILP },
+   { 0, 0, 0, 0, 0, 0, NONE, "KILL", TGSI_OPCODE_KILL },
    { 1, 1, 0, 0, 0, 0, COMP, "PK2H", TGSI_OPCODE_PK2H },
    { 1, 1, 0, 0, 0, 0, COMP, "PK2US", TGSI_OPCODE_PK2US },
    { 1, 1, 0, 0, 0, 0, COMP, "PK4B", TGSI_OPCODE_PK4B },
@@ -153,7 +153,7 @@ static const struct tgsi_opcode_info opcode_info[TGSI_OPCODE_LAST] =
    { 0, 1, 0, 0, 0, 0, NONE, "CALLNZ", TGSI_OPCODE_CALLNZ },
    { 0, 1, 0, 0, 0, 0, NONE, "", 114 },     /* removed */
    { 0, 1, 0, 0, 0, 0, NONE, "BREAKC", TGSI_OPCODE_BREAKC },
-   { 0, 1, 0, 0, 0, 0, NONE, "KIL", TGSI_OPCODE_KIL },
+   { 0, 1, 0, 0, 0, 0, NONE, "KILL_IF", TGSI_OPCODE_KILL_IF },
    { 0, 0, 0, 0, 0, 0, NONE, "END", TGSI_OPCODE_END },
    { 0, 0, 0, 0, 0, 0, NONE, "", 118 },     /* removed */
    { 1, 1, 0, 0, 0, 0, COMP, "F2I", TGSI_OPCODE_F2I },
diff --git a/src/gallium/auxiliary/tgsi/tgsi_opcode_tmp.h b/src/gallium/auxiliary/tgsi/tgsi_opcode_tmp.h
index a6bcbb0..b87c4b1 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_opcode_tmp.h
+++ b/src/gallium/auxiliary/tgsi/tgsi_opcode_tmp.h
@@ -92,7 +92,7 @@ OP12(DPH)
 OP11(COS)
 OP11(DDX)
 OP11(DDY)
-OP00(KILP)
+OP00(KILL)
 OP11(PK2H)
 OP11(PK2US)
 OP11(PK4B)
@@ -156,7 +156,7 @@ OP00(NOP)
 OP11(NRM4)
 OP01(CALLNZ)
 OP01(BREAKC)
-OP01(KIL)
+OP01(KILL_IF)
 OP00(END)
 OP11(F2I)
 OP12(IDIV)
diff --git a/src/gallium/auxiliary/tgsi/tgsi_scan.c b/src/gallium/auxiliary/tgsi/tgsi_scan.c
index a07df5c..1fe1a07 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_scan.c
+++ b/src/gallium/auxiliary/tgsi/tgsi_scan.c
@@ -263,8 +263,8 @@ tgsi_scan_shader(const struct tgsi_token *tokens,
       }
    }
 
-   info->uses_kill = (info->opcode_count[TGSI_OPCODE_KIL] ||
-                      info->opcode_count[TGSI_OPCODE_KILP]);
+   info->uses_kill = (info->opcode_count[TGSI_OPCODE_KILL_IF] ||
+                      info->opcode_count[TGSI_OPCODE_KILL]);
 
    /* extract simple properties */
    for (i = 0; i < info->num_properties; ++i) {
diff --git a/src/gallium/auxiliary/tgsi/tgsi_scan.h b/src/gallium/auxiliary/tgsi/tgsi_scan.h
index b62c462..cfa2b8e 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_scan.h
+++ b/src/gallium/auxiliary/tgsi/tgsi_scan.h
@@ -70,7 +70,7 @@ struct tgsi_shader_info
    boolean writes_z;  /**< does fragment shader write Z value? */
    boolean writes_stencil; /**< does fragment shader write stencil value? */
    boolean writes_edgeflag; /**< vertex shader outputs edgeflag */
-   boolean uses_kill;  /**< KIL or KILP instruction used? */
+   boolean uses_kill;  /**< KILL or KILL_IF instruction used? */
    boolean uses_instanceid;
    boolean uses_vertexid;
    boolean uses_primid;