diff options
| -rw-r--r-- | src/gallium/drivers/radeonsi/si_shader.c | 29 |
1 files changed, 26 insertions, 3 deletions
diff --git a/src/gallium/drivers/radeonsi/si_shader.c b/src/gallium/drivers/radeonsi/si_shader.c index a8749e4ee94..cd6725ecdfc 100644 --- a/src/gallium/drivers/radeonsi/si_shader.c +++ b/src/gallium/drivers/radeonsi/si_shader.c @@ -1116,12 +1116,35 @@ static LLVMValueRef get_sample_id(struct radeon_llvm_context *radeon_bld) SI_PARAM_ANCILLARY, 8, 4); } +/** + * Set range metadata on an instruction. This can only be used on load and + * call instructions. If you know an instruction can only produce the values + * 0, 1, 2, you would do set_range_metadata(value, 0, 3); + * \p lo is the minimum value inclusive. + * \p hi is the maximum value exclusive. + */ +static void set_range_metadata(LLVMValueRef value, unsigned lo, unsigned hi) +{ + const char *range_md_string = "range"; + LLVMValueRef range_md, md_args[2]; + LLVMTypeRef type = LLVMTypeOf(value); + LLVMContextRef context = LLVMGetTypeContext(type); + unsigned md_range_id = LLVMGetMDKindIDInContext(context, + range_md_string, strlen(range_md_string)); + + md_args[0] = LLVMConstInt(type, lo, false); + md_args[1] = LLVMConstInt(type, hi, false); + range_md = LLVMMDNodeInContext(context, md_args, 2); + LLVMSetMetadata(value, md_range_id, range_md); +} + static LLVMValueRef get_thread_id(struct si_shader_context *ctx) { struct gallivm_state *gallivm = &ctx->radeon_bld.gallivm; - - return lp_build_intrinsic(gallivm->builder, "llvm.SI.tid", ctx->i32, - NULL, 0, LLVMReadNoneAttribute); + LLVMValueRef tid = lp_build_intrinsic(gallivm->builder, "llvm.SI.tid", + ctx->i32, NULL, 0, LLVMReadNoneAttribute); + set_range_metadata(tid, 0, 64); + return tid; } /** |