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i965/fs: Relax type check in cmod propagation.

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The thing we want to avoid is int/float comparisons, but int/unsigned
comparisons with 0 are equivalent.

total instructions in shared programs: 6194829 -> 6193996 (-0.01%)
instructions in affected programs:     117192 -> 116359 (-0.71%)
helped:                                471

Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>
This commit is contained in:
Matt Turner
2015-03-26 10:09:54 -07:00
parent 781badee7a
commit a03d0ba78f
1 changed files with 3 additions and 1 deletions
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src/mesa/drivers/dri/i965/brw_fs_cmod_propagation.cpp
+3 -1
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@@ -111,7 +111,9 @@ opt_cmod_propagation_local(bblock_t *block)
break;
/* Comparisons operate differently for ints and floats */
if (scan_inst->dst.type != inst->dst.type)
if (scan_inst->dst.type != inst->dst.type &&
(scan_inst->dst.type == BRW_REGISTER_TYPE_F ||
inst->dst.type == BRW_REGISTER_TYPE_F))
break;
/* If the instruction generating inst's source also wrote the