[Mesa-dev] [PATCH 6/9] ac: add 16-bit support to ac_find_lsb()

[Samuel Pitoiset]

Signed-off-by: Samuel Pitoiset <samuel.pitoi...@gmail.com>
---
 src/amd/common/ac_llvm_build.c | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/src/amd/common/ac_llvm_build.c b/src/amd/common/ac_llvm_build.c
index 905146c9f2..6955df48e0 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] = {
-- 
2.19.0

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