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nv50/ir: disable tryCollapseChainedMULs in ConstantFolding for precise instructions

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fixes dEQP-GLES2.functional.shaders.invariance.mediump.loop_3

CC: <mesa-stable@lists.freedesktop.org>
Signed-off-by: Karol Herbst <kherbst@redhat.com>
Reviewed-by: Ilia Mirkin <imirkin@alum.mit.edu>
(cherry picked from commit 30b5c9eda2)
This commit is contained in:
Karol Herbst 2019-01-17 23:32:19 +01:00 • committed by Emil Velikov
parent ea2bf29ed9
commit 98a661f2b1
1 changed files with 1 additions and 1 deletions
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2
src/gallium/drivers/nouveau/codegen/nv50_ir_peephole.cpp
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@ -1044,7 +1044,7 @@ ConstantFolding::opnd(Instruction *i, ImmediateValue &imm0, int s)
break;
}
case OP_MUL:
if (i->dType == TYPE_F32)
if (i->dType == TYPE_F32 && !i->precise)
tryCollapseChainedMULs(i, s, imm0);
if (i->subOp == NV50_IR_SUBOP_MUL_HIGH) {