Module: Mesa Branch: master Commit: 254360d96cab8a5868d4f7b795c4b2816295f468 URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=254360d96cab8a5868d4f7b795c4b2816295f468
Author: Rhys Perry <[email protected]> Date: Wed Apr 7 19:45:57 2021 +0100 nir/lower_idiv: make lowered divisions exact I can't imagine any reasonable optimization which could break this, but since it's lowered from an integer instructions, we shouldn't do anything which could change the result. Signed-off-by: Rhys Perry <[email protected]> Reviewed-by: Jason Ekstrand <[email protected]> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10081> --- src/compiler/nir/nir_lower_idiv.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/src/compiler/nir/nir_lower_idiv.c b/src/compiler/nir/nir_lower_idiv.c index c477fd53e85..1f1c940e22f 100644 --- a/src/compiler/nir/nir_lower_idiv.c +++ b/src/compiler/nir/nir_lower_idiv.c @@ -247,6 +247,8 @@ lower_idiv(nir_builder *b, nir_instr *instr, void *_data) nir_ssa_def *numer = nir_ssa_for_alu_src(b, alu, 0); nir_ssa_def *denom = nir_ssa_for_alu_src(b, alu, 1); + b->exact = true; + if (numer->bit_size < 32) return convert_instr_small(b, alu->op, numer, denom, options); else if (options->imprecise_32bit_lowering) _______________________________________________ mesa-commit mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/mesa-commit
