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ac/llvm: add support for device clock on GFX11

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Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/19267>
This commit is contained in:
Samuel Pitoiset 2022-10-21 00:37:28 +00:00
parent 1c005e72f4
commit 3a3df9acda
1 changed files with 7 additions and 0 deletions
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7
src/amd/llvm/ac_llvm_build.c
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@ -473,6 +473,13 @@ void ac_build_optimization_barrier(struct ac_llvm_context *ctx, LLVMValueRef *pg
LLVMValueRef ac_build_shader_clock(struct ac_llvm_context *ctx, nir_scope scope)
{
if (ctx->gfx_level >= GFX11 && scope == NIR_SCOPE_DEVICE) {
const char *name = "llvm.amdgcn.s.sendmsg.rtn.i64";
LLVMValueRef arg = LLVMConstInt(ctx->i32, 0x83 /* realtime */, 0);
LLVMValueRef tmp = ac_build_intrinsic(ctx, name, ctx->i64, &arg, 1, 0);
return LLVMBuildBitCast(ctx->builder, tmp, ctx->v2i32, "");
}
const char *subgroup = "llvm.readcyclecounter";
const char *name = scope == NIR_SCOPE_DEVICE ? "llvm.amdgcn.s.memrealtime" : subgroup;