From: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Date: Fri, 14 Sep 2018 10:52:37 +0000 (+0200)
Subject: ac: add 16-bit support to ac_find_lsb()
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=94dd08eb7c5eb5dbb38a997ffbd3105be2d20d52;p=mesa.git

ac: add 16-bit support to ac_find_lsb()

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

diff --git a/src/amd/common/ac_llvm_build.c b/src/amd/common/ac_llvm_build.c
index 905146c9f28..6955df48e00 100644
--- a/src/amd/common/ac_llvm_build.c
+++ b/src/amd/common/ac_llvm_build.c
@@ -2499,14 +2499,25 @@ LLVMValueRef ac_find_lsb(struct ac_llvm_context *ctx,
 	const char *intrin_name;
 	LLVMTypeRef type;
 	LLVMValueRef zero;
-	if (src0_bitsize == 64) {
+
+	switch (src0_bitsize) {
+	case 64:
 		intrin_name = "llvm.cttz.i64";
 		type = ctx->i64;
 		zero = ctx->i64_0;
-	} else {
+		break;
+	case 32:
 		intrin_name = "llvm.cttz.i32";
 		type = ctx->i32;
 		zero = ctx->i32_0;
+		break;
+	case 16:
+		intrin_name = "llvm.cttz.i16";
+		type = ctx->i16;
+		zero = ctx->i16_0;
+		break;
+	default:
+		unreachable(!"invalid bitsize");
 	}
 
 	LLVMValueRef params[2] = {