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ac: rework emit_barrier() to not segfault on radeonsi

Browse source 
nir_to_llvm_context will always be NULL for radeonsi so we need
work around this.

Reviewed-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
This commit is contained in:
Timothy Arceri 2018-01-08 17:41:24 +11:00
parent 19f3141e6a
commit f04d2ca0d9
1 changed files with 8 additions and 9 deletions
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17
src/amd/common/ac_nir_to_llvm.c
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@ -3831,19 +3831,18 @@ static void emit_membar(struct nir_to_llvm_context *ctx,
ac_build_waitcnt(&ctx->ac, waitcnt);
}
static void emit_barrier(struct nir_to_llvm_context *ctx)
static void emit_barrier(struct ac_llvm_context *ac, gl_shader_stage stage)
{
/* SI only (thanks to a hw bug workaround):
* The real barrier instruction isn’t needed, because an entire patch
* always fits into a single wave.
*/
if (ctx->options->chip_class == SI &&
ctx->stage == MESA_SHADER_TESS_CTRL) {
ac_build_waitcnt(&ctx->ac, LGKM_CNT & VM_CNT);
if (ac->chip_class == SI && stage == MESA_SHADER_TESS_CTRL) {
ac_build_waitcnt(ac, LGKM_CNT & VM_CNT);
return;
}
ac_build_intrinsic(&ctx->ac, "llvm.amdgcn.s.barrier",
ctx->ac.voidt, NULL, 0, AC_FUNC_ATTR_CONVERGENT);
ac_build_intrinsic(ac, "llvm.amdgcn.s.barrier",
ac->voidt, NULL, 0, AC_FUNC_ATTR_CONVERGENT);
}
static void emit_discard_if(struct ac_nir_context *ctx,
@ -4336,7 +4335,7 @@ static void visit_intrinsic(struct ac_nir_context *ctx,
emit_membar(ctx->nctx, instr);
break;
case nir_intrinsic_barrier:
emit_barrier(ctx->nctx);
emit_barrier(&ctx->ac, ctx->stage);
break;
case nir_intrinsic_var_atomic_add:
case nir_intrinsic_var_atomic_imin:
@ -6179,7 +6178,7 @@ write_tess_factors(struct nir_to_llvm_context *ctx)
LLVMValueRef lds_base, lds_inner, lds_outer, byteoffset, buffer;
LLVMValueRef out[6], vec0, vec1, tf_base, inner[4], outer[4];
int i;
emit_barrier(ctx);
emit_barrier(&ctx->ac, ctx->stage);
switch (ctx->options->key.tcs.primitive_mode) {
case GL_ISOLINES:
@ -6728,7 +6727,7 @@ LLVMModuleRef ac_translate_nir_to_llvm(LLVMTargetMachineRef tm,
}
if (i)
emit_barrier(&ctx);
emit_barrier(&ctx.ac, ctx.stage);
ac_setup_rings(&ctx);