mesa/st/glsl_to_tgsi: move evaluation of read mask up in the call hierarchy

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@gmail.com>
Acked-by: Dave Airlie <airlied@redhat.com>

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 bc0b2f2..24c3fbe 100644 (file)
--- 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);