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nir: Don't allow copying SSA destinations

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Reviewed-by: Connor Abbott <cwabbott0@gmail.com>
This commit is contained in:
Jason Ekstrand 2015-07-01 16:00:08 -07:00
parent 197a19f9ed
commit 89bd5ee64c
1 changed files with 11 additions and 11 deletions
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22
src/glsl/nir/nir.c
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@ -147,18 +147,18 @@ void nir_src_copy(nir_src *dest, const nir_src *src, void *mem_ctx)
void nir_dest_copy(nir_dest *dest, const nir_dest *src, void *mem_ctx)
{
dest->is_ssa = src->is_ssa;
if (src->is_ssa) {
dest->ssa = src->ssa;
/* Copying an SSA definition makes no sense whatsoever. */
assert(!src->is_ssa);
dest->is_ssa = false;
dest->reg.base_offset = src->reg.base_offset;
dest->reg.reg = src->reg.reg;
if (src->reg.indirect) {
dest->reg.indirect = ralloc(mem_ctx, nir_src);
nir_src_copy(dest->reg.indirect, src->reg.indirect, mem_ctx);
} else {
dest->reg.base_offset = src->reg.base_offset;
dest->reg.reg = src->reg.reg;
if (src->reg.indirect) {
dest->reg.indirect = ralloc(mem_ctx, nir_src);
nir_src_copy(dest->reg.indirect, src->reg.indirect, mem_ctx);
} else {
dest->reg.indirect = NULL;
}
dest->reg.indirect = NULL;
}
}