Mesa (master): ac: add 8-bit support to ac_build_bit_count()

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Module: Mesa
Branch: master
Commit: 89cf8ca0ae8b5c9db4af34ebbfc5552366b70c30
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=89cf8ca0ae8b5c9db4af34ebbfc5552366b70c30

Author: Samuel Pitoiset <samuel.pitoiset at gmail.com>
Date:   Mon Apr  1 16:18:07 2019 +0200

ac: add 8-bit support to ac_build_bit_count()

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

---

 src/amd/common/ac_llvm_build.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/amd/common/ac_llvm_build.c b/src/amd/common/ac_llvm_build.c
index fe280b31368..6d26ab31a66 100644
--- a/src/amd/common/ac_llvm_build.c
+++ b/src/amd/common/ac_llvm_build.c
@@ -2555,6 +2555,13 @@ LLVMValueRef ac_build_bit_count(struct ac_llvm_context *ctx, LLVMValueRef src0)
 
 		result = LLVMBuildZExt(ctx->builder, result, ctx->i32, "");
 		break;
+	case 8:
+		result = ac_build_intrinsic(ctx, "llvm.ctpop.i8", ctx->i8,
+					    (LLVMValueRef []) { src0 }, 1,
+					    AC_FUNC_ATTR_READNONE);
+
+		result = LLVMBuildZExt(ctx->builder, result, ctx->i32, "");
+		break;
 	default:
 		unreachable(!"invalid bitsize");
 		break;