ac: add ac_build_llvm8_tbuffer_load() helper

It uses the new LLVM intrinsics.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>

diff --git a/src/amd/common/ac_llvm_build.c b/src/amd/common/ac_llvm_build.c
index d06eb7df50c202bb87ef1969177980af71e24a7a..3acf41728ac396e4b420ecc6b428d6204494601e 100644 (file)
--- a/src/amd/common/ac_llvm_build.c
+++ b/src/amd/common/ac_llvm_build.c
@@ -1364,6 +1364,44 @@ ac_build_tbuffer_load_short(struct ac_llvm_context *ctx,
        return LLVMBuildTrunc(ctx->builder, res, ctx->i16, "");
 }
 
+LLVMValueRef
+ac_build_llvm8_tbuffer_load(struct ac_llvm_context *ctx,
+                           LLVMValueRef rsrc,
+                           LLVMValueRef vindex,
+                           LLVMValueRef voffset,
+                           LLVMValueRef soffset,
+                           unsigned num_channels,
+                           unsigned dfmt,
+                           unsigned nfmt,
+                           bool glc,
+                           bool slc,
+                           bool can_speculate,
+                           bool structurized)
+{
+       LLVMValueRef args[6];
+       int idx = 0;
+       args[idx++] = LLVMBuildBitCast(ctx->builder, rsrc, ctx->v4i32, "");
+       if (structurized)
+               args[idx++] = vindex ? vindex : ctx->i32_0;
+       args[idx++] = voffset ? voffset : ctx->i32_0;
+       args[idx++] = soffset ? soffset : ctx->i32_0;
+       args[idx++] = LLVMConstInt(ctx->i32, dfmt | (nfmt << 4), 0);
+       args[idx++] = LLVMConstInt(ctx->i32, (glc ? 1 : 0) + (slc ? 2 : 0), 0);
+       unsigned func = CLAMP(num_channels, 1, 3) - 1;
+
+       LLVMTypeRef types[] = {ctx->i32, ctx->v2i32, ctx->v4i32};
+       const char *type_names[] = {"i32", "v2i32", "v4i32"};
+       const char *indexing_kind = structurized ? "struct" : "raw";
+       char name[256];
+
+       snprintf(name, sizeof(name), "llvm.amdgcn.%s.tbuffer.load.%s",
+                indexing_kind, type_names[func]);
+
+       return ac_build_intrinsic(ctx, name, types[func], args,
+                                 idx,
+                                 ac_get_load_intr_attribs(can_speculate));
+}
+
 /**
  * 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

diff --git a/src/amd/common/ac_llvm_build.h b/src/amd/common/ac_llvm_build.h
index 7f8e2398a2550a990796461757488b202ae9d71f..00d59a9e36965972fbcd4e789248894dd7a342b3 100644 (file)
--- a/src/amd/common/ac_llvm_build.h
+++ b/src/amd/common/ac_llvm_build.h
@@ -298,6 +298,20 @@ ac_build_tbuffer_load_short(struct ac_llvm_context *ctx,
                                LLVMValueRef immoffset,
                                LLVMValueRef glc);
 
+LLVMValueRef
+ac_build_llvm8_tbuffer_load(struct ac_llvm_context *ctx,
+                           LLVMValueRef rsrc,
+                           LLVMValueRef vindex,
+                           LLVMValueRef voffset,
+                           LLVMValueRef soffset,
+                           unsigned num_channels,
+                           unsigned dfmt,
+                           unsigned nfmt,
+                           bool glc,
+                           bool slc,
+                           bool can_speculate,
+                           bool structurized);
+
 LLVMValueRef
 ac_get_thread_id(struct ac_llvm_context *ctx);