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nv50/ir: propagate modifier to right arg when const-folding mad

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An immediate has to be the second arg of an ADD operation. However we
were mistakenly propagating the modifier of the non-folded value to the
folded immediate argument.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=91117
Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Cc: "10.5 10.6" <mesa-stable@lists.freedesktop.org>
(cherry picked from commit ad62ec8316)
This commit is contained in:
Ilia Mirkin 2015-06-26 15:01:22 -04:00 • committed by Emil Velikov
parent 3c4570e3fc
commit 16b6fa972d
1 changed files with 4 additions and 1 deletions
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5
src/gallium/drivers/nouveau/codegen/nv50_ir_peephole.cpp
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@ -572,9 +572,12 @@ ConstantFolding::expr(Instruction *i,
case OP_FMA: {
i->op = OP_ADD;
/* Move the immediate to the second arg, otherwise the ADD operation
* won't be emittable
*/
i->setSrc(1, i->getSrc(0));
i->src(1).mod = i->src(2).mod;
i->setSrc(0, i->getSrc(2));
i->src(0).mod = i->src(2).mod;
i->setSrc(2, NULL);
ImmediateValue src0;