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radeonsi/ac: move frag interp emission code to shared llvm code.

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This code should be used in radv, so move it to a shared location
in advance of doing that.

Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Dave Airlie
2017-02-01 14:47:45 +10:00
parent b940b2fd16
commit dc68b920df
3 changed files with 98 additions and 87 deletions
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71
src/amd/common/ac_llvm_util.c
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@@ -512,3 +512,74 @@ ac_dump_module(LLVMModuleRef module)
fprintf(stderr, "%s", str);
LLVMDisposeMessage(str);
}
LLVMValueRef
ac_build_fs_interp(struct ac_llvm_context *ctx,
LLVMValueRef llvm_chan,
LLVMValueRef attr_number,
LLVMValueRef params,
LLVMValueRef i,
LLVMValueRef j)
{
LLVMValueRef args[5];
LLVMValueRef p1;
if (HAVE_LLVM < 0x0400) {
LLVMValueRef ij[2];
ij[0] = LLVMBuildBitCast(ctx->builder, i, ctx->i32, "");
ij[1] = LLVMBuildBitCast(ctx->builder, j, ctx->i32, "");
args[0] = llvm_chan;
args[1] = attr_number;
args[2] = params;
args[3] = ac_build_gather_values(ctx, ij, 2);
return ac_emit_llvm_intrinsic(ctx, "llvm.SI.fs.interp",
ctx->f32, args, 4,
AC_FUNC_ATTR_READNONE);
}
args[0] = i;
args[1] = llvm_chan;
args[2] = attr_number;
args[3] = params;
p1 = ac_emit_llvm_intrinsic(ctx, "llvm.amdgcn.interp.p1",
ctx->f32, args, 4, AC_FUNC_ATTR_READNONE);
args[0] = p1;
args[1] = j;
args[2] = llvm_chan;
args[3] = attr_number;
args[4] = params;
return ac_emit_llvm_intrinsic(ctx, "llvm.amdgcn.interp.p2",
ctx->f32, args, 5, AC_FUNC_ATTR_READNONE);
}
LLVMValueRef
ac_build_fs_interp_mov(struct ac_llvm_context *ctx,
LLVMValueRef parameter,
LLVMValueRef llvm_chan,
LLVMValueRef attr_number,
LLVMValueRef params)
{
LLVMValueRef args[4];
if (HAVE_LLVM < 0x0400) {
args[0] = llvm_chan;
args[1] = attr_number;
args[2] = params;
return ac_emit_llvm_intrinsic(ctx,
"llvm.SI.fs.constant",
ctx->f32, args, 3,
AC_FUNC_ATTR_READNONE);
}
args[0] = parameter;
args[1] = llvm_chan;
args[2] = attr_number;
args[3] = params;
return ac_emit_llvm_intrinsic(ctx, "llvm.amdgcn.interp.mov",
ctx->f32, args, 4, AC_FUNC_ATTR_READNONE);
}