nir: Add a flag to lower_io to force "sample" interpolation

[mesa.git] / src / mesa / drivers / dri / i965 / brw_fs_live_variables.cpp

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 02dc77744276cf61eeb4805990a405e61383443a..c449672a519b55fac6987c257a194eae92df699e 100644 (file)
--- a/src/mesa/drivers/dri/i965/brw_fs_live_variables.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs_live_variables.cpp
@@ -41,12 +41,12 @@ using namespace brw;
  * but we currently do not.  It is easier for the consumers of this
  * information to work with whole VGRFs.
  *
- * However, we internally track use/def information at the per-component
- * (reg_offset) level for greater accuracy.  Large VGRFs may be accessed
- * piecemeal over many (possibly non-adjacent) instructions.  In this case,
- * examining a single instruction is insufficient to decide whether a whole
- * VGRF is ultimately used or defined.  Tracking individual components
- * allows us to easily assemble this information.
+ * However, we internally track use/def information at the per-GRF level for
+ * greater accuracy.  Large VGRFs may be accessed piecemeal over many
+ * (possibly non-adjacent) instructions.  In this case, examining a single
+ * instruction is insufficient to decide whether a whole VGRF is ultimately
+ * used or defined.  Tracking individual components allows us to easily
+ * assemble this information.
  *
  * See Muchnick's Advanced Compiler Design and Implementation, section
  * 14.1 (p444).
@@ -118,7 +118,7 @@ fs_live_variables::setup_def_use()
             if (reg.file != VGRF)
                continue;
 
-            for (int j = 0; j < inst->regs_read(i); j++) {
+            for (unsigned j = 0; j < regs_read(inst, i); j++) {
                setup_one_read(bd, inst, ip, reg);
                reg.offset += REG_SIZE;
             }
@@ -129,7 +129,7 @@ fs_live_variables::setup_def_use()
          /* Set def[] for this instruction */
          if (inst->dst.file == VGRF) {
             fs_reg reg = inst->dst;
-            for (int j = 0; j < inst->regs_written; j++) {
+            for (unsigned j = 0; j < regs_written(inst); j++) {
                setup_one_write(bd, inst, ip, reg);
                reg.offset += REG_SIZE;
             }