Mesa (master): i965/fs: Print the maximum register pressure.

[Matt Turner]

Module: Mesa
Branch: master
Commit: 413622fbefb63c54d331ce5d708479ab847e6709
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=413622fbefb63c54d331ce5d708479ab847e6709

Author: Matt Turner <mattst88 at gmail.com>
Date:   Sat Dec 14 18:37:16 2013 -0800

i965/fs: Print the maximum register pressure.

Reviewed-by: Matt Turner <mattst88 at gmail.com>
Reviewed-by: Jordan Justen <jordan.l.justen at intel.com>

---

 src/mesa/drivers/dri/i965/brw_fs.cpp |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/mesa/drivers/dri/i965/brw_fs.cpp b/src/mesa/drivers/dri/i965/brw_fs.cpp
index 181a939..4a96126 100644
--- a/src/mesa/drivers/dri/i965/brw_fs.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs.cpp
@@ -2946,13 +2946,15 @@ fs_visitor::dump_instructions()
 {
    calculate_register_pressure();
 
-   int ip = 0;
+   int ip = 0, max_pressure = 0;
    foreach_list(node, &this->instructions) {
       backend_instruction *inst = (backend_instruction *)node;
+      max_pressure = MAX2(max_pressure, regs_live_at_ip[ip]);
       printf("{%3d} %4d: ", regs_live_at_ip[ip], ip);
       dump_instruction(inst);
       ++ip;
    }
+   printf("Maximum %3d registers live at once.\n", max_pressure);
 }
 
 void