i965/reg: Make brw_sr0_reg take a subnr and return a vec1 reg

The state register sr0 is really a collection of dwords not a SIMD8
anything.  It's much more convenient for brw_sr0_reg to return the
particular dword you're looking for rather than a giant blob you have to
massage into what you want.

Signed-off-by: Jason Ekstrand <[email protected]>
[ Francisco Jerez: Trivial simplification of brw_ud1_reg(). ]
Reviewed-by: Francisco Jerez <[email protected]>

2 files changed, 9 insertions, 13 deletions

diff --git a/src/mesa/drivers/dri/i965/brw_fs.cpp b/src/mesa/drivers/dri/i965/brw_fs.cpp
index d026bbd517f..5c44007ba88 100644
--- a/src/mesa/drivers/dri/i965/brw_fs.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs.cpp
@@ -6185,7 +6185,7 @@ fs_visitor::run_cs()
    if (devinfo->is_haswell && prog_data->total_shared > 0) {
       /* Move SLM index from g0.0[27:24] to sr0.1[11:8] */
       const fs_builder abld = bld.exec_all().group(1, 0);
-      abld.MOV(retype(suboffset(brw_sr0_reg(), 1), BRW_REGISTER_TYPE_UW),
+      abld.MOV(retype(brw_sr0_reg(1), BRW_REGISTER_TYPE_UW),
                suboffset(retype(brw_vec1_grf(0, 0), BRW_REGISTER_TYPE_UW), 1));
    }
 
diff --git a/src/mesa/drivers/dri/i965/brw_reg.h b/src/mesa/drivers/dri/i965/brw_reg.h
index d6f22ed5a12..b71c63b62df 100644
--- a/src/mesa/drivers/dri/i965/brw_reg.h
+++ b/src/mesa/drivers/dri/i965/brw_reg.h
@@ -567,6 +567,12 @@ brw_uw1_reg(enum brw_reg_file file, unsigned nr, unsigned subnr)
 }
 
 static inline struct brw_reg
+brw_ud1_reg(enum brw_reg_file file, unsigned nr, unsigned subnr)
+{
+   return retype(brw_vec1_reg(file, nr, subnr), BRW_REGISTER_TYPE_UD);
+}
+
+static inline struct brw_reg
 brw_imm_reg(enum brw_reg_type type)
 {
    return brw_reg(BRW_IMMEDIATE_VALUE,
@@ -789,19 +795,9 @@ brw_notification_reg(void)
 }
 
 static inline struct brw_reg
-brw_sr0_reg(void)
+brw_sr0_reg(unsigned subnr)
 {
-   return brw_reg(BRW_ARCHITECTURE_REGISTER_FILE,
-                  BRW_ARF_STATE,
-                  0,
-                  0,
-                  0,
-                  BRW_REGISTER_TYPE_UD,
-                  BRW_VERTICAL_STRIDE_8,
-                  BRW_WIDTH_8,
-                  BRW_HORIZONTAL_STRIDE_1,
-                  BRW_SWIZZLE_XYZW,
-                  WRITEMASK_XYZW);
+   return brw_ud1_reg(BRW_ARCHITECTURE_REGISTER_FILE, BRW_ARF_STATE, subnr);
 }
 
 static inline struct brw_reg