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gm107/ir/lib: fix sched in div u32 builtin 

Imad needs to set a read barrier.

With significant big work groups I was getting wrong results for div u32. Turns
out the issue was with the sched opcodes.

Signed-off-by: Karol Herbst <kherbst@redhat.com>
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
This commit is contained in:
Karol Herbst 2018-04-22 22:23:13 +02:00
parent 0d5ce25c1c
commit e4f675dc42
2 changed files with 4 additions and 4 deletions
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4
src/gallium/drivers/nouveau/codegen/lib/gm107.asm
View File

@ -27,11 +27,11 @@ gm107_div_u32:
imul u32 u32 $r3 $r1 $r2
imad u32 u32 hi $r2 $r2 $r3 $r2
imul u32 u32 $r3 $r1 $r2
sched (st 0x6 wr 0x0 wt 0x1) (st 0x6 wr 0x0 wt 0x1) (st 0x6 wr 0x0 wt 0x1)
sched (st 0x6 wr 0x0 wt 0x1) (st 0x6 wr 0x0 wt 0x1) (st 0x6 wr 0x0 rd 0x1 wt 0x1)
imad u32 u32 hi $r2 $r2 $r3 $r2
imul u32 u32 $r3 $r1 $r2
imad u32 u32 hi $r2 $r2 $r3 $r2
sched (st 0x6) (st 0x6 wr 0x0 rd 0x1 wt 0x1) (st 0xf wr 0x0 rd 0x1 wt 0x2)
sched (st 0x6 wt 0x2) (st 0x6 wr 0x0 rd 0x1 wt 0x1) (st 0xf wr 0x0 rd 0x1 wt 0x2)
mov $r3 $r0 0xf
imul u32 u32 hi $r0 $r0 $r2
i2i u32 u32 $r2 neg $r1

4
src/gallium/drivers/nouveau/codegen/lib/gm107.asm.h
View File

@ -16,11 +16,11 @@ uint64_t gm107_builtin_code[] = {
0x5c38000000270103,
0x5a40010000370202,
0x5c38000000270103,
0x003c1801e0c00f06,
0x00241801e0c00f06,
0x5a40010000370202,
0x5c38000000270103,
0x5a40010000370202,
0x00443c0120c007e6,
0x00443c0120c017e6,
0x5c98078000070003,
0x5c38008000270000,
0x5ce0200000170a02,