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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>
This commit is contained in:
Samuel Pitoiset 2019-02-14 14:42:29 +01:00
parent 9762a9f893
commit f0223143a8
2 changed files with 52 additions and 0 deletions
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38
src/amd/common/ac_llvm_build.c
View File

@ -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

14
src/amd/common/ac_llvm_build.h
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@ -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);