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ac: add 16-bit support to ac_find_lsb()

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Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
This commit is contained in:
Samuel Pitoiset 2018-09-14 12:52:37 +02:00
parent 5a6c8ca3e8
commit 94dd08eb7c
1 changed files with 13 additions and 2 deletions
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15
src/amd/common/ac_llvm_build.c
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@ -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] = {