aboutsummaryrefslogtreecommitdiff
path: root/mesalib/src/glsl/opt_constant_propagation.cpp
diff options
context:
space:
mode:
authormarha <marha@users.sourceforge.net>2011-07-07 08:34:33 +0200
committermarha <marha@users.sourceforge.net>2011-07-07 08:34:33 +0200
commit47a6ae678489d7082b5d7da35d1a92b4233fb5eb (patch)
treebebaf8b6b97255c4363a6b4fc9499763c22dfb11 /mesalib/src/glsl/opt_constant_propagation.cpp
parent92c298bd203bf001b159752fe31ea701fbc0eae6 (diff)
downloadvcxsrv-47a6ae678489d7082b5d7da35d1a92b4233fb5eb.tar.gz
vcxsrv-47a6ae678489d7082b5d7da35d1a92b4233fb5eb.tar.bz2
vcxsrv-47a6ae678489d7082b5d7da35d1a92b4233fb5eb.zip
mesa xkbcomp git update 7 Juli 2011
Diffstat (limited to 'mesalib/src/glsl/opt_constant_propagation.cpp')
-rw-r--r--mesalib/src/glsl/opt_constant_propagation.cpp17
1 files changed, 14 insertions, 3 deletions
diff --git a/mesalib/src/glsl/opt_constant_propagation.cpp b/mesalib/src/glsl/opt_constant_propagation.cpp
index 4425f4211..af77e4906 100644
--- a/mesalib/src/glsl/opt_constant_propagation.cpp
+++ b/mesalib/src/glsl/opt_constant_propagation.cpp
@@ -51,11 +51,23 @@ public:
this->var = var;
this->write_mask = write_mask;
this->constant = constant;
+ this->initial_values = write_mask;
+ }
+
+ acp_entry(const acp_entry *src)
+ {
+ this->var = src->var;
+ this->write_mask = src->write_mask;
+ this->constant = src->constant;
+ this->initial_values = src->initial_values;
}
ir_variable *var;
ir_constant *constant;
unsigned write_mask;
+
+ /** Mask of values initially available in the constant. */
+ unsigned initial_values;
};
@@ -172,7 +184,7 @@ ir_constant_propagation_visitor::handle_rvalue(ir_rvalue **rvalue)
for (int j = 0; j < 4; j++) {
if (j == channel)
break;
- if (found->write_mask & (1 << j))
+ if (found->initial_values & (1 << j))
rhs_channel++;
}
@@ -285,8 +297,7 @@ ir_constant_propagation_visitor::handle_if_block(exec_list *instructions)
/* Populate the initial acp with a constant of the original */
foreach_iter(exec_list_iterator, iter, *orig_acp) {
acp_entry *a = (acp_entry *)iter.get();
- this->acp->push_tail(new(this->mem_ctx) acp_entry(a->var, a->write_mask,
- a->constant));
+ this->acp->push_tail(new(this->mem_ctx) acp_entry(a));
}
visit_list_elements(this, instructions);