AlexIndustrial/mesa
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

amd: Use inverse ballot intrinsic if available

Browse Source 
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/25123>
This commit is contained in:
Connor Abbott
2019-02-01 12:36:56 +01:00
committed by Marge Bot
parent 4282386311
commit c93bcb32fe
3 changed files with 30 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/amd/llvm/ac_nir_to_llvm.c
+9
View File
@@ -3057,6 +3057,15 @@ static bool visit_intrinsic(struct ac_nir_context *ctx, nir_intrinsic_instr *ins
result = LLVMBuildZExt(ctx->ac.builder, result, dest_type, "");
}
break;
case nir_intrinsic_inverse_ballot: {
LLVMValueRef src = get_src(ctx, instr->src[0]);
if (instr->src[0].ssa->bit_size > ctx->ac.wave_size) {
LLVMTypeRef src_type = LLVMIntTypeInContext(ctx->ac.context, ctx->ac.wave_size);
src = LLVMBuildTrunc(ctx->ac.builder, src, src_type, "");
}
result = ac_build_intrinsic(&ctx->ac, "llvm.amdgcn.inverse.ballot", ctx->ac.i1, &src, 1, 0);
break;
}
case nir_intrinsic_read_invocation:
result =
ac_build_readlane(&ctx->ac, get_src(ctx, instr->src[0]), get_src(ctx, instr->src[1]));