Mesa (master): i965/fs: Rename num_vars to num_vgrfs in live interval analysis.

[Eric Anholt]

Module: Mesa
Branch: master
Commit: 5af8388110595f6324d697f0b468047c779f1079
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=5af8388110595f6324d697f0b468047c779f1079

Author: Kenneth Graunke <kenneth at whitecape.org>
Date:   Tue Aug  6 01:12:54 2013 -0700

i965/fs: Rename num_vars to num_vgrfs in live interval analysis.

num_vars was shorthand for the number of virtual GRFs.  num_vgrfs is a
bit clearer.  Plus, the next patch will introduce "vars" which are
distinct from vgrfs.

Signed-off-by: Kenneth Graunke <kenneth at whitecape.org>
Reviewed-by: Eric Anholt <eric at anholt.net>

---

 .../drivers/dri/i965/brw_fs_live_variables.cpp     |   13 ++++++-------
 src/mesa/drivers/dri/i965/brw_fs_live_variables.h  |    2 +-
 2 files changed, 7 insertions(+), 8 deletions(-)

diff --git a/src/mesa/drivers/dri/i965/brw_fs_live_variables.cpp b/src/mesa/drivers/dri/i965/brw_fs_live_variables.cpp
index 18ba30a..8abed8f 100644
--- a/src/mesa/drivers/dri/i965/brw_fs_live_variables.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs_live_variables.cpp
@@ -138,7 +138,7 @@ fs_live_variables::fs_live_variables(fs_visitor *v, cfg_t *cfg)
 {
    mem_ctx = ralloc_context(cfg->mem_ctx);
 
-   num_vars = v->virtual_grf_count;
+   num_vgrfs = v->virtual_grf_count;
    bd = rzalloc_array(mem_ctx, struct block_data, cfg->num_blocks);
 
    bitset_words = BITSET_WORDS(v->virtual_grf_count);
@@ -163,19 +163,18 @@ fs_live_variables::~fs_live_variables()
 void
 fs_visitor::calculate_live_intervals()
 {
-   int num_vars = this->virtual_grf_count;
-
    if (this->live_intervals_valid)
       return;
 
-   int *start = ralloc_array(mem_ctx, int, num_vars);
-   int *end = ralloc_array(mem_ctx, int, num_vars);
+   int num_vgrfs = this->virtual_grf_count;
+   int *start = ralloc_array(mem_ctx, int, num_vgrfs);
+   int *end = ralloc_array(mem_ctx, int, num_vgrfs);
    ralloc_free(this->virtual_grf_start);
    ralloc_free(this->virtual_grf_end);
    this->virtual_grf_start = start;
    this->virtual_grf_end = end;
 
-   for (int i = 0; i < num_vars; i++) {
+   for (int i = 0; i < num_vgrfs; i++) {
       start[i] = MAX_INSTRUCTION;
       end[i] = -1;
    }
@@ -243,7 +242,7 @@ fs_visitor::calculate_live_intervals()
    fs_live_variables livevars(this, &cfg);
 
    for (int b = 0; b < cfg.num_blocks; b++) {
-      for (int i = 0; i < num_vars; i++) {
+      for (int i = 0; i < num_vgrfs; i++) {
 	 if (BITSET_TEST(livevars.bd[b].livein, i)) {
 	    start[i] = MIN2(start[i], cfg.blocks[b]->start_ip);
 	    end[i] = MAX2(end[i], cfg.blocks[b]->start_ip);
diff --git a/src/mesa/drivers/dri/i965/brw_fs_live_variables.h b/src/mesa/drivers/dri/i965/brw_fs_live_variables.h
index e227439..c518755 100644
--- a/src/mesa/drivers/dri/i965/brw_fs_live_variables.h
+++ b/src/mesa/drivers/dri/i965/brw_fs_live_variables.h
@@ -65,7 +65,7 @@ public:
    cfg_t *cfg;
    void *mem_ctx;
 
-   int num_vars;
+   int num_vgrfs;
    int bitset_words;
 
    /** Per-basic-block information on live variables */