opt_split_alu_of_phi moves ALU instruction to the end of continue block.
But if the continue block ends with a jump instruction (an explicit
"continue" instruction) then the ALU must be inserted before the jump,
as it is illegal to add instructions after the jump.
CC: Ian Romanick <ian.d.roman...@intel.com>
Fixes: 0881e90c099 ("nir: Split ALU instructions in loops that read phis")
---
src/compiler/nir/nir_opt_if.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/src/compiler/nir/nir_opt_if.c b/src/compiler/nir/nir_opt_if.c
index 9afb901be14..932af9e37ab 100644
--- a/src/compiler/nir/nir_opt_if.c
+++ b/src/compiler/nir/nir_opt_if.c
@@ -488,7 +488,7 @@ opt_split_alu_of_phi(nir_builder *b, nir_loop *loop)
*
* Insert the new instruction at the end of the continue block.
*/
- b->cursor = nir_after_block(continue_block);
+ b->cursor = nir_after_block_before_jump(continue_block);
nir_ssa_def *const alu_copy =
clone_alu_and_replace_src_defs(b, alu, continue_srcs);
--
2.20.1
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