Mesa (master): nir: Invalidate live SSA def information when making new SSA defs.

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Module: Mesa
Branch: master
Commit: 5d2b2b59c451915c0b11184ae47c0673fdff3146
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=5d2b2b59c451915c0b11184ae47c0673fdff3146

Author: Eric Anholt <eric at anholt.net>
Date:   Wed Aug 26 13:09:09 2020 -0700

nir: Invalidate live SSA def information when making new SSA defs.

Noted by @jekstrand in review of the SSA live index changes.

Reviewed-by: Jason Ekstrand <jason at jlekstrand.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6408>

---

 src/compiler/nir/nir.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/compiler/nir/nir.c b/src/compiler/nir/nir.c
index a94ccf09be1..24515f05cb8 100644
--- a/src/compiler/nir/nir.c
+++ b/src/compiler/nir/nir.c
@@ -801,6 +801,8 @@ add_ssa_def_cb(nir_ssa_def *def, void *state)
          nir_cf_node_get_function(&instr->block->cf_node);
 
       def->index = impl->ssa_alloc++;
+
+      impl->valid_metadata &= ~nir_metadata_live_ssa_defs;
    }
 
    return true;
@@ -1503,6 +1505,8 @@ nir_ssa_def_init(nir_instr *instr, nir_ssa_def *def,
          nir_cf_node_get_function(&instr->block->cf_node);
 
       def->index = impl->ssa_alloc++;
+
+      impl->valid_metadata &= ~nir_metadata_live_ssa_defs;
    } else {
       def->index = UINT_MAX;
    }