From: Dave Airlie <airl...@redhat.com>
We won't have a var to load from, so don't try to the processing
required if we don't need it.
This avoids crashes in:
dEQP-VK.spirv_assembly.instruction.compute.variable_pointers.compute.workgroup_two_buffers
Signed-off-by: Dave Airlie <airl...@redhat.com>
---
src/amd/common/ac_nir_to_llvm.c | 27 ++++++++++++++++++---------
1 file changed, 18 insertions(+), 9 deletions(-)
diff --git a/src/amd/common/ac_nir_to_llvm.c b/src/amd/common/ac_nir_to_llvm.c
index f24b63bb158..cc795324cc5 100644
--- a/src/amd/common/ac_nir_to_llvm.c
+++ b/src/amd/common/ac_nir_to_llvm.c
@@ -1861,23 +1861,32 @@ static LLVMValueRef visit_load_var(struct
ac_nir_context *ctx,
nir_variable *var =
nir_deref_instr_get_variable(nir_instr_as_deref(instr->src[0].ssa->parent_instr));
LLVMValueRef values[8];
- int idx = var->data.driver_location;
+ int idx = 0;
int ve = instr->dest.ssa.num_components;
- unsigned comp = var->data.location_frac;
+ unsigned comp = 0;
LLVMValueRef indir_index;
LLVMValueRef ret;
unsigned const_index;
- unsigned stride = var->data.compact ? 1 : 4;
- bool vs_in = ctx->stage == MESA_SHADER_VERTEX &&
- var->data.mode == nir_var_shader_in;
-
- get_deref_offset(ctx,
nir_instr_as_deref(instr->src[0].ssa->parent_instr), vs_in, NULL, NULL,
- &const_index, &indir_index);
+ unsigned stride = 4;
+ int mode = nir_var_shared;
+
+ if (var) {
+ bool vs_in = ctx->stage == MESA_SHADER_VERTEX &&
+ var->data.mode == nir_var_shader_in;
+ if (var->data.compact)
+ stride = 1;
+ idx = var->data.driver_location;
+ comp = var->data.location_frac;
+ mode = var->data.mode;
+
+ get_deref_offset(ctx,
nir_instr_as_deref(instr->src[0].ssa->parent_instr), vs_in, NULL, NULL,
+ &const_index, &indir_index);
+ }
if (instr->dest.ssa.bit_size == 64)
ve *= 2;
- switch (var->data.mode) {
+ switch (mode) {
case nir_var_shader_in:
if (ctx->stage == MESA_SHADER_TESS_CTRL ||
ctx->stage == MESA_SHADER_TESS_EVAL) {
--
2.17.2
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