Module: Mesa
Branch: staging/22.0
Commit: 4656dbee084bed9b19e7e1d11fe4ea346962ed5d
URL:    
http://cgit.freedesktop.org/mesa/mesa/commit/?id=4656dbee084bed9b19e7e1d11fe4ea346962ed5d

Author: Connor Abbott <[email protected]>
Date:   Mon Jan 10 18:16:05 2022 +0100

ir3/ra: Sanitize parallel copy flags better

For pcopies we only care about the register's type, i.e. whether its a
half-register and whether it's an array (plus its size). Copying over
other flags like IR3_REG_RELATIV just leads to sadness and validator
assertions.

Fixes: 0ffcb19b9d9 ("ir3: Rewrite register allocation")
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14107>
(cherry picked from commit ab0ed4ff3f2eed6610597a0f0b42b8ca829790f9)

---

 .pick_status.json          |  2 +-
 src/freedreno/ir3/ir3_ra.c | 14 ++++++++------
 2 files changed, 9 insertions(+), 7 deletions(-)

diff --git a/.pick_status.json b/.pick_status.json
index 6912cbabdea..461c2f6f50a 100644
--- a/.pick_status.json
+++ b/.pick_status.json
@@ -868,7 +868,7 @@
         "description": "ir3/ra: Sanitize parallel copy flags better",
         "nominated": true,
         "nomination_type": 1,
-        "resolution": 0,
+        "resolution": 1,
         "main_sha": null,
         "because_sha": "0ffcb19b9d9fbe902224542047c389a661fbf816"
     },
diff --git a/src/freedreno/ir3/ir3_ra.c b/src/freedreno/ir3/ir3_ra.c
index 2897163b2f9..58ffcc36825 100644
--- a/src/freedreno/ir3/ir3_ra.c
+++ b/src/freedreno/ir3/ir3_ra.c
@@ -1332,7 +1332,8 @@ insert_parallel_copy_instr(struct ra_ctx *ctx, struct 
ir3_instruction *instr)
       struct ra_parallel_copy *entry = &ctx->parallel_copies[i];
       struct ir3_register *reg =
          ir3_dst_create(pcopy, INVALID_REG,
-                        entry->interval->interval.reg->flags & ~IR3_REG_SSA);
+                        entry->interval->interval.reg->flags &
+                        (IR3_REG_HALF | IR3_REG_ARRAY));
       reg->size = entry->interval->interval.reg->size;
       reg->wrmask = entry->interval->interval.reg->wrmask;
       assign_reg(pcopy, reg, ra_interval_get_num(entry->interval));
@@ -1342,7 +1343,8 @@ insert_parallel_copy_instr(struct ra_ctx *ctx, struct 
ir3_instruction *instr)
       struct ra_parallel_copy *entry = &ctx->parallel_copies[i];
       struct ir3_register *reg =
          ir3_src_create(pcopy, INVALID_REG,
-                        entry->interval->interval.reg->flags & ~IR3_REG_SSA);
+                        entry->interval->interval.reg->flags &
+                        (IR3_REG_HALF | IR3_REG_ARRAY));
       reg->size = entry->interval->interval.reg->size;
       reg->wrmask = entry->interval->interval.reg->wrmask;
       assign_reg(pcopy, reg, ra_physreg_to_num(entry->src, reg->flags));
@@ -1778,8 +1780,9 @@ insert_liveout_copy(struct ir3_block *block, physreg_t 
dst, physreg_t src,
       pcopy->dsts[pcopy->dsts_count++] = old_pcopy->dsts[i];
    }
 
-   struct ir3_register *dst_reg =
-      ir3_dst_create(pcopy, INVALID_REG, reg->flags & ~IR3_REG_SSA);
+   unsigned flags = reg->flags & (IR3_REG_HALF | IR3_REG_ARRAY);
+
+   struct ir3_register *dst_reg = ir3_dst_create(pcopy, INVALID_REG, flags);
    dst_reg->wrmask = reg->wrmask;
    dst_reg->size = reg->size;
    assign_reg(pcopy, dst_reg, ra_physreg_to_num(dst, reg->flags));
@@ -1788,8 +1791,7 @@ insert_liveout_copy(struct ir3_block *block, physreg_t 
dst, physreg_t src,
       pcopy->srcs[pcopy->srcs_count++] = old_pcopy->srcs[i];
    }
 
-   struct ir3_register *src_reg =
-      ir3_src_create(pcopy, INVALID_REG, reg->flags & ~IR3_REG_SSA);
+   struct ir3_register *src_reg = ir3_src_create(pcopy, INVALID_REG, flags);
    src_reg->wrmask = reg->wrmask;
    src_reg->size = reg->size;
    assign_reg(pcopy, src_reg, ra_physreg_to_num(src, reg->flags));

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