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| author | Francisco Jerez <currojerez@riseup.net> | 2016-03-06 19:03:56 -0800 |
|---|---|---|
| committer | Francisco Jerez <currojerez@riseup.net> | 2016-03-14 14:58:19 -0700 |
| commit | b0546057220ac2906913bfd283aaefa6c4cb6038 (patch) | |
| tree | c22e35e7b1b7cb5cf9c68e816fe4ca2b5c2fe44b /src/mesa/drivers/dri/i965/brw_fs_saturate_propagation.cpp | |
| parent | 7d7990cf657550be4d038a0424ffdc0ef7fd8faa (diff) | |
| download | external_mesa3d-b0546057220ac2906913bfd283aaefa6c4cb6038.zip external_mesa3d-b0546057220ac2906913bfd283aaefa6c4cb6038.tar.gz external_mesa3d-b0546057220ac2906913bfd283aaefa6c4cb6038.tar.bz2 | |
i965/fs: Restrict inequality that can only hold equal in saturate propagation.
Should have no functional change. The IP value of an instruction that
reads src_var cannot possibly be after the end of the live interval of
the variable it's reading from, by the definition of live interval.
Might save future readers a momentary WTF while trying to understand
this code.
Reviewed-by: Matt Turner <mattst88@gmail.com>
Diffstat (limited to 'src/mesa/drivers/dri/i965/brw_fs_saturate_propagation.cpp')
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_fs_saturate_propagation.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_fs_saturate_propagation.cpp b/src/mesa/drivers/dri/i965/brw_fs_saturate_propagation.cpp index dc2b0c8..f59fdbd 100644 --- a/src/mesa/drivers/dri/i965/brw_fs_saturate_propagation.cpp +++ b/src/mesa/drivers/dri/i965/brw_fs_saturate_propagation.cpp @@ -73,7 +73,7 @@ opt_saturate_propagation_local(fs_visitor *v, bblock_t *block) if (scan_inst->saturate) { inst->saturate = false; progress = true; - } else if (src_end_ip <= ip || inst->dst.equals(inst->src[0])) { + } else if (src_end_ip == ip || inst->dst.equals(inst->src[0])) { if (scan_inst->can_do_saturate()) { if (scan_inst->dst.type != inst->dst.type) { scan_inst->dst.type = inst->dst.type; |