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authorKenneth Graunke <kenneth@whitecape.org>2015-09-02 16:39:27 -0700
committerKenneth Graunke <kenneth@whitecape.org>2015-09-03 21:12:54 -0700
commit2ace64fd598816fd1be9877962734242fc27b87b (patch)
tree95bc00d6f81cadf845e701253323fee6970ce52c /src
parent5fa5a012b163bad80d01a65e2947510f15e1be6b (diff)
i965: Fix copy propagation type changes.
commit 472ef9a02f2e5c5d0caa2809cb736a0f4f0d4693 introduced code to change the types of SEL and MOV instructions for moves that simply "copy bits around". It didn't account for type conversion moves, however. So it would happily turn this: mov(8) vgrf6:D, -vgrf5:D mov(8) vgrf7:F, vgrf6:UD into this: mov(8) vgrf6:D, -vgrf5:D mov(8) vgrf7:D, -vgrf5:D which erroneously drops the conversion to float. Cc: "11.0 10.6" <mesa-stable@lists.freedesktop.org> Signed-off-by: Kenneth Graunke <kenneth@whitecape.org> Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com> Reviewed-by: Matt Turner <mattst88@gmail.com>
Diffstat (limited to 'src')
-rw-r--r--src/mesa/drivers/dri/i965/brw_fs_copy_propagation.cpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_fs_copy_propagation.cpp b/src/mesa/drivers/dri/i965/brw_fs_copy_propagation.cpp
index 5445ad55670..230b0caec47 100644
--- a/src/mesa/drivers/dri/i965/brw_fs_copy_propagation.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs_copy_propagation.cpp
@@ -279,6 +279,7 @@ static bool
can_change_source_types(fs_inst *inst)
{
return !inst->src[0].abs && !inst->src[0].negate &&
+ inst->dst.type == inst->src[0].type &&
(inst->opcode == BRW_OPCODE_MOV ||
(inst->opcode == BRW_OPCODE_SEL &&
inst->predicate != BRW_PREDICATE_NONE &&