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i965/fs: Handle explicit flag sources in flags_read()

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The implementations of the ARB_shader_ballot intrinsics will explicitly
read the flag as a source register.

Reviewed-by: Matt Turner <mattst88@gmail.com>
This commit is contained in:
Francisco Jerez
2017-06-22 16:42:34 -07:00
committed by Matt Turner
parent 3e7b8f6cd4
commit f1b7c47913
1 changed files with 5 additions and 4 deletions
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9
src/intel/compiler/brw_fs.cpp
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@@ -880,9 +880,6 @@ namespace {
unsigned
fs_inst::flags_read(const gen_device_info *devinfo) const
{
/* XXX - This doesn't consider explicit uses of the flag register as source
* region.
*/
if (predicate == BRW_PREDICATE_ALIGN1_ANYV ||
predicate == BRW_PREDICATE_ALIGN1_ALLV) {
/* The vertical predication modes combine corresponding bits from
@@ -893,7 +890,11 @@ fs_inst::flags_read(const gen_device_info *devinfo) const
} else if (predicate) {
return flag_mask(this);
} else {
return 0;
unsigned mask = 0;
for (int i = 0; i < sources; i++) {
mask |= flag_mask(src[i], size_read(i));
}
return mask;
}
}