nir: fix nir_ishl_imm
Both GLSL & SPIRV have undefined values for shift > bitsize. But SM5
says :
"This instruction performs a component-wise shift of each 32-bit
value in src0 left by an unsigned integer bit count provided by
the LSB 5 bits (0-31 range) in src1, inserting 0."
Better to not hard code the wrong behavior in NIR.
Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Fixes: e227bb9fd5 ("nir/builder: add ishl_imm helper")
Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@colllabora.com>
Reviewed-by: Faith Ekstrand <faith.ekstrand@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/21720>
(cherry picked from commit a278eeb71974a89b6dd7c0fa3dbfe97183aeb657)
2 files changed
