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vc4: Reuse uniform_data/contents indices when making uniforms.

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This allows vc4_opt_cse.c to CSE-away operations involving the same
uniform values.

total instructions in shared programs: 37341 -> 36906 (-1.16%)
instructions in affected programs:     10233 -> 9798 (-4.25%)
total uniforms in shared programs: 10523 -> 10320 (-1.93%)
uniforms in affected programs:     2467 -> 2264 (-8.23%)
This commit is contained in:
Eric Anholt 2014-10-24 17:16:59 +01:00
parent 18ccda7b86
commit 8c7ac377b7
1 changed files with 7 additions and 0 deletions
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7
src/gallium/drivers/vc4/vc4_program.c
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@ -114,6 +114,13 @@ add_uniform(struct vc4_compile *c,
enum quniform_contents contents,
uint32_t data)
{
for (int i = 0; i < c->num_uniforms; i++) {
if (c->uniform_contents[i] == contents &&
c->uniform_data[i] == data) {
return (struct qreg) { QFILE_UNIF, i };
}
}
uint32_t uniform = c->num_uniforms++;
struct qreg u = { QFILE_UNIF, uniform };