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nir: move ALU instruction before the jump instruction

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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.romanick@intel.com>
Fixes: 0881e90c09 ("nir: Split ALU instructions in loops that read phis")
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
This commit is contained in:
Juan A. Suarez Romero 2019-02-12 08:54:43 +00:00
parent a43596df62
commit 69be9934a7
1 changed files with 1 additions and 1 deletions
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2
src/compiler/nir/nir_opt_if.c
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@ -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);