diff options
| author | Kenneth Graunke <[email protected]> | 2020-04-22 15:03:03 -0700 |
|---|---|---|
| committer | Kenneth Graunke <[email protected]> | 2020-04-22 17:03:18 -0700 |
| commit | 220f0e10d8c27684b1c91c5291bdf8a8012e2a1a (patch) | |
| tree | 5920d76098d4dedeae87aa34cf912983949398c8 /src/intel | |
| parent | be33cf8ad04855d37a7f756ba46c1ee49461b908 (diff) | |
intel/compiler: Don't copy prop source mods into PICK_HIGH_32BIT
VEC4_OPCODE_PICK_HIGH_32BIT performs 32-bit UD access on a 64-bit DF
value. abs and negate make sense on DF, but break entirely when
trying to access pieces of the value as unsigned integer dwords.
Fixes an fsign Piglit test on Ivybridge:
tests/spec/arb_gpu_shader_fp64/execution/built-in-functions/vs-sign-neg-abs
It had regressed when I removed nir_lower_to_source_modifiers, as that
caused us to start generating different code which provoked this bug.
Fixes: b7c47c4f7cf ("intel/compiler: Drop nir_lower_to_source_mods() and related handling.")
Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/2817
Reviewed-by: Jason Ekstrand <[email protected]>
Reviewed-by: Alyssa Rosenzweig <[email protected]>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4691>
Diffstat (limited to 'src/intel')
| -rw-r--r-- | src/intel/compiler/brw_vec4_copy_propagation.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/intel/compiler/brw_vec4_copy_propagation.cpp b/src/intel/compiler/brw_vec4_copy_propagation.cpp index 597e75c8b89..8fb5d1c2451 100644 --- a/src/intel/compiler/brw_vec4_copy_propagation.cpp +++ b/src/intel/compiler/brw_vec4_copy_propagation.cpp @@ -381,7 +381,8 @@ try_copy_propagate(const struct gen_device_info *devinfo, return false; if (has_source_modifiers && - inst->opcode == SHADER_OPCODE_GEN4_SCRATCH_WRITE) + (inst->opcode == SHADER_OPCODE_GEN4_SCRATCH_WRITE || + inst->opcode == VEC4_OPCODE_PICK_HIGH_32BIT)) return false; unsigned composed_swizzle = brw_compose_swizzle(inst->src[arg].swizzle, |