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 <[email protected]>

1 files changed, 5 insertions, 5 deletions

diff --git a/src/gallium/auxiliary/util/u_pstipple.c b/src/gallium/auxiliary/util/u_pstipple.c
index 68804ae98c6..640305f9ec4 100644
--- a/src/gallium/auxiliary/util/u_pstipple.c
+++ b/src/gallium/auxiliary/util/u_pstipple.c
@@ -75,7 +75,7 @@ util_pstipple_update_stipple_texture(struct pipe_context *pipe,
    /*
     * Load alpha texture.
     * Note: 0 means keep the fragment, 255 means kill it.
-    * We'll negate the texel value and use KILP which kills if value
+    * We'll negate the texel value and use KILL_IF which kills if value
     * is negative.
     */
    for (i = 0; i < 32; i++) {
@@ -252,7 +252,7 @@ free_bit(uint bitfield)
  *   declare new registers
  *   MUL texTemp, INPUT[wincoord], 1/32;
  *   TEX texTemp, texTemp, sampler;
- *   KIL -texTemp;   # if -texTemp < 0, KILL fragment
+ *   KILL_IF -texTemp;   # if -texTemp < 0, kill fragment
  *   [...original code...]
  */
 static void
@@ -340,7 +340,7 @@ pstip_transform_inst(struct tgsi_transform_context *ctx,
 
 
       /* 
-       * Insert new MUL/TEX/KILP instructions at start of program
+       * Insert new MUL/TEX/KILL_IF instructions at start of program
        * Take gl_FragCoord, divide by 32 (stipple size), sample the
        * texture and kill fragment if needed.
        *
@@ -379,9 +379,9 @@ pstip_transform_inst(struct tgsi_transform_context *ctx,
       newInst.Src[1].Register.Index = pctx->freeSampler;
       ctx->emit_instruction(ctx, &newInst);
 
-      /* KIL -texTemp;   # if -texTemp < 0, KILL fragment */
+      /* KILL_IF -texTemp;   # if -texTemp < 0, kill fragment */
       newInst = tgsi_default_full_instruction();
-      newInst.Instruction.Opcode = TGSI_OPCODE_KIL;
+      newInst.Instruction.Opcode = TGSI_OPCODE_KILL_IF;
       newInst.Instruction.NumDstRegs = 0;
       newInst.Instruction.NumSrcRegs = 1;
       newInst.Src[0].Register.File = TGSI_FILE_TEMPORARY;