radeonsi: replace SI.packf16 with amdgcn.cvt.pkrtz

3 files changed, 21 insertions, 5 deletions

diff --git a/src/amd/common/ac_llvm_build.c b/src/amd/common/ac_llvm_build.c
index 187c2cb05e2..42965b6a544 100644
--- a/src/amd/common/ac_llvm_build.c
+++ b/src/amd/common/ac_llvm_build.c
@@ -1080,3 +1080,21 @@ LLVMValueRef ac_emit_image_opcode(struct ac_llvm_context *ctx,
 				      AC_FUNC_ATTR_READNONE |
 				      AC_FUNC_ATTR_LEGACY);
 }
+
+LLVMValueRef ac_emit_cvt_pkrtz_f16(struct ac_llvm_context *ctx,
+				   LLVMValueRef args[2])
+{
+	if (HAVE_LLVM >= 0x0500) {
+		LLVMTypeRef v2f16 =
+			LLVMVectorType(LLVMHalfTypeInContext(ctx->context), 2);
+		LLVMValueRef res =
+			ac_emit_llvm_intrinsic(ctx, "llvm.amdgcn.cvt.pkrtz",
+					       v2f16, args, 2,
+					       AC_FUNC_ATTR_READNONE);
+		return LLVMBuildBitCast(ctx->builder, res, ctx->i32, "");
+	}
+
+	return ac_emit_llvm_intrinsic(ctx, "llvm.SI.packf16", ctx->i32, args, 2,
+				      AC_FUNC_ATTR_READNONE |
+				      AC_FUNC_ATTR_LEGACY);
+}
diff --git a/src/amd/common/ac_llvm_build.h b/src/amd/common/ac_llvm_build.h
index f57acc20663..e6bb90fd7ab 100644
--- a/src/amd/common/ac_llvm_build.h
+++ b/src/amd/common/ac_llvm_build.h
@@ -233,6 +233,8 @@ struct ac_image_args {
 
 LLVMValueRef ac_emit_image_opcode(struct ac_llvm_context *ctx,
 				  struct ac_image_args *a);
+LLVMValueRef ac_emit_cvt_pkrtz_f16(struct ac_llvm_context *ctx,
+				   LLVMValueRef args[2]);
 
 #ifdef __cplusplus
 }
diff --git a/src/gallium/drivers/radeonsi/si_shader.c b/src/gallium/drivers/radeonsi/si_shader.c
index 5dc53fcf750..efb39bf0da3 100644
--- a/src/gallium/drivers/radeonsi/si_shader.c
+++ b/src/gallium/drivers/radeonsi/si_shader.c
@@ -1822,11 +1822,7 @@ static void si_llvm_init_export_args(struct lp_build_tgsi_context *bld_base,
 			};
 			LLVMValueRef packed;
 
-			packed = lp_build_intrinsic(base->gallivm->builder,
-						    "llvm.SI.packf16",
-						    ctx->i32, pack_args, 2,
-						    LP_FUNC_ATTR_READNONE |
-						    LP_FUNC_ATTR_LEGACY);
+			packed = ac_emit_cvt_pkrtz_f16(&ctx->ac, pack_args);
 			args->out[chan] =
 				LLVMBuildBitCast(base->gallivm->builder,
 						 packed, ctx->f32, "");