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nvc0/ir: fix TargetNVC0::insnCanLoadOffset()

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Previously, TargetNVC0::insnCanLoadOffset() returned whether the offset
could be set to a specific value. The IndirectPropagation pass expected
it to return whether the offset could be increased by a specific value,
which is what TargetNV50::insnCanLoadOffset() does.

Fixes: 37b67db6ae
	("nvc0/ir: be careful about propagating very large offsets into const load")

Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Karol Herbst <kherbst@redhat.com>
Signed-off-by: Karol Herbst <kherbst@redhat.com>
(cherry picked from commit 6bb0f87c60)
This commit is contained in:
Rhys Perry 2018-06-28 14:26:33 +01:00 • committed by Dylan Baker
parent 2fa4b4dfc0
commit fb39f5d2e8
1 changed files with 1 additions and 0 deletions
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1
src/gallium/drivers/nouveau/codegen/nv50_ir_target_nvc0.cpp
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@ -415,6 +415,7 @@ bool
TargetNVC0::insnCanLoadOffset(const Instruction *insn, int s, int offset) const
{
const ValueRef& ref = insn->src(s);
offset += insn->src(s).get()->reg.data.offset;
if (ref.getFile() == FILE_MEMORY_CONST &&
(insn->op != OP_LOAD || insn->subOp != NV50_IR_SUBOP_LDC_IS))
return offset >= -0x8000 && offset < 0x8000;