[Mesa-dev] [PATCH 3/4] radeonsi: use llvm.amdgcn.cube* if available

[Marek Olšák]

From: Marek Olšák <marek.ol...@amd.com>

---
 .../drivers/radeon/radeon_setup_tgsi_llvm.c        | 32 +++++++++++++++++++---
 1 file changed, 28 insertions(+), 4 deletions(-)

diff --git a/src/gallium/drivers/radeon/radeon_setup_tgsi_llvm.c 
b/src/gallium/drivers/radeon/radeon_setup_tgsi_llvm.c
index cd9ac26..e7354de 100644
--- a/src/gallium/drivers/radeon/radeon_setup_tgsi_llvm.c
+++ b/src/gallium/drivers/radeon/radeon_setup_tgsi_llvm.c
@@ -901,6 +901,32 @@ static void kil_emit(const struct lp_build_tgsi_action 
*action,
        }
 }
 
+static LLVMValueRef build_cube_intrinsic(struct gallivm_state *gallivm,
+                                        LLVMValueRef in[4])
+{
+       if (HAVE_LLVM >= 0x0309) {
+               LLVMTypeRef f32 = LLVMTypeOf(in[0]);
+               LLVMValueRef out[4];
+
+               out[0] = lp_build_intrinsic(gallivm->builder, 
"llvm.amdgcn.cubetc",
+                                           f32, in, 3, LLVMReadNoneAttribute);
+               out[1] = lp_build_intrinsic(gallivm->builder, 
"llvm.amdgcn.cubesc",
+                                           f32, in, 3, LLVMReadNoneAttribute);
+               out[2] = lp_build_intrinsic(gallivm->builder, 
"llvm.amdgcn.cubema",
+                                           f32, in, 3, LLVMReadNoneAttribute);
+               out[3] = lp_build_intrinsic(gallivm->builder, 
"llvm.amdgcn.cubeid",
+                                           f32, in, 3, LLVMReadNoneAttribute);
+
+               return lp_build_gather_values(gallivm, out, 4);
+       } else {
+               LLVMValueRef vec = lp_build_gather_values(gallivm, in, 4);
+
+               return lp_build_intrinsic(gallivm->builder, "llvm.AMDGPU.cube",
+                                         LLVMTypeOf(vec), &vec, 1,
+                                         LLVMReadNoneAttribute);
+       }
+}
+
 static void radeon_llvm_cube_to_2d_coords(struct lp_build_tgsi_context 
*bld_base,
                                          LLVMValueRef *in, LLVMValueRef *out)
 {
@@ -909,12 +935,10 @@ static void radeon_llvm_cube_to_2d_coords(struct 
lp_build_tgsi_context *bld_base
        LLVMTypeRef type = bld_base->base.elem_type;
        LLVMValueRef coords[4];
        LLVMValueRef mad_args[3];
-       LLVMValueRef v, cube_vec;
+       LLVMValueRef v;
        unsigned i;
 
-       cube_vec = lp_build_gather_values(bld_base->base.gallivm, in, 4);
-       v = lp_build_intrinsic(builder, "llvm.AMDGPU.cube", 
LLVMVectorType(type, 4),
-                            &cube_vec, 1, LLVMReadNoneAttribute);
+       v = build_cube_intrinsic(gallivm, in);
 
        for (i = 0; i < 4; ++i)
                coords[i] = LLVMBuildExtractElement(builder, v,
-- 
2.7.4

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