[Mesa-dev] [PATCH v4 10/15] mesa/st/glsl_to_tgsi: move evaluation of read mask up in the call hierarchy

[Gert Wollny]

In preparation of the array live range tracking the evaluation of the read
mask is moved out the register live range tracking to the enclosing call
of the generalized read access tracking.

Signed-off-by: Gert Wollny <gw.fossdev at gmail.com>
---
 src/mesa/state_tracker/st_glsl_to_tgsi_temprename.cpp | 15 ++++++++-------
 1 file changed, 8 insertions(+), 7 deletions(-)

diff --git a/src/mesa/state_tracker/st_glsl_to_tgsi_temprename.cpp b/src/mesa/state_tracker/st_glsl_to_tgsi_temprename.cpp
index e80138e312..121552a721 100644
--- a/src/mesa/state_tracker/st_glsl_to_tgsi_temprename.cpp
+++ b/src/mesa/state_tracker/st_glsl_to_tgsi_temprename.cpp
@@ -494,13 +494,8 @@ void temp_access::record_write(int line, prog_scope *scope, int writemask)
       comp[3].record_write(line, scope);
 }
 
-void temp_access::record_read(int line, prog_scope *scope, int swizzle)
+void temp_access::record_read(int line, prog_scope *scope, int readmask)
 {
-   int readmask = 0;
-   for (int idx = 0; idx < 4; ++idx) {
-      int swz = GET_SWZ(swizzle, idx);
-      readmask |= (1 << swz) & 0xF;
-   }
    update_access_mask(readmask);
 
    if (readmask & WRITEMASK_X)
@@ -940,8 +935,14 @@ access_recorder::~access_recorder()
 void access_recorder::record_read(const st_src_reg& src, int line,
                                   prog_scope *scope)
 {
+   int readmask = 0;
+   for (int idx = 0; idx < 4; ++idx) {
+      int swz = GET_SWZ(src.swizzle, idx);
+      readmask |= (1 << swz) & 0xF;
+   }
+
    if (src.file == PROGRAM_TEMPORARY)
-      temp_acc[src.index].record_read(line, scope, src.swizzle);
+      temp_acc[src.index].record_read(line, scope, readmask);
 
    if (src.reladdr)
       record_read(*src.reladdr, line, scope);
-- 
2.16.4