i965: avoid memsetting all the BRW_WM_MAX_INSN arrays for every compile.

For an app that's blowing out the state cache, like sauerbraten, the
memset of the giant arrays ended up taking 11% of the CPU even when only a
"few" of the entries got used.  With this, the WM program compile drops back
down to 1% of CPU time.

Bug #24981 (bisected to BRW_WM_MAX_INSN increase).

1 files changed, 4 insertions, 4 deletions

diff --git a/src/mesa/drivers/dri/i965/brw_wm.h b/src/mesa/drivers/dri/i965/brw_wm.h
index 1fa2f1c06c..7db212e392 100644
--- a/src/mesa/drivers/dri/i965/brw_wm.h
+++ b/src/mesa/drivers/dri/i965/brw_wm.h
@@ -202,7 +202,7 @@ struct brw_wm_compile {
     * simplifying and adding instructions for interpolation and
     * framebuffer writes.
     */
-   struct prog_instruction prog_instructions[BRW_WM_MAX_INSN];
+   struct prog_instruction *prog_instructions;
    GLuint nr_fp_insns;
    GLuint fp_temp;
    GLuint fp_interp_emitted;
@@ -213,7 +213,7 @@ struct brw_wm_compile {
    struct prog_src_register pixel_w;
 
 
-   struct brw_wm_value vreg[BRW_WM_MAX_VREG];
+   struct brw_wm_value *vreg;
    GLuint nr_vreg;
 
    struct brw_wm_value creg[BRW_WM_MAX_PARAM];
@@ -230,10 +230,10 @@ struct brw_wm_compile {
    struct brw_wm_ref undef_ref;
    struct brw_wm_value undef_value;
 
-   struct brw_wm_ref refs[BRW_WM_MAX_REF];
+   struct brw_wm_ref *refs;
    GLuint nr_refs;
 
-   struct brw_wm_instruction instruction[BRW_WM_MAX_INSN];
+   struct brw_wm_instruction *instruction;
    GLuint nr_insns;
 
    struct brw_wm_constref constref[BRW_WM_MAX_CONST];