From: Dave Airlie <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
---
src/gallium/drivers/radeonsi/si_shader_tgsi_alu.c | 24 ++---------------------
1 file changed, 2 insertions(+), 22 deletions(-)
diff --git a/src/gallium/drivers/radeonsi/si_shader_tgsi_alu.c
b/src/gallium/drivers/radeonsi/si_shader_tgsi_alu.c
index 879deb1..e03d053 100644
--- a/src/gallium/drivers/radeonsi/si_shader_tgsi_alu.c
+++ b/src/gallium/drivers/radeonsi/si_shader_tgsi_alu.c
@@ -555,30 +555,10 @@ static void emit_umsb(const struct lp_build_tgsi_action
*action,
struct lp_build_tgsi_context *bld_base,
struct lp_build_emit_data *emit_data)
{
- struct gallivm_state *gallivm = bld_base->base.gallivm;
- LLVMBuilderRef builder = gallivm->builder;
- LLVMValueRef args[2] = {
- emit_data->args[0],
- /* Don't generate code for handling zero: */
- LLVMConstInt(LLVMInt1TypeInContext(gallivm->context), 1, 0)
- };
-
- LLVMValueRef msb =
- lp_build_intrinsic(builder, "llvm.ctlz.i32",
- emit_data->dst_type, args, ARRAY_SIZE(args),
- LP_FUNC_ATTR_READNONE);
-
- /* The HW returns the last bit index from MSB, but TGSI wants
- * the index from LSB. Invert it by doing "31 - msb". */
- msb = LLVMBuildSub(builder, lp_build_const_int32(gallivm, 31),
- msb, "");
+ struct si_shader_context *ctx = si_shader_context(bld_base);
- /* Check for zero: */
emit_data->output[emit_data->chan] =
- LLVMBuildSelect(builder,
- LLVMBuildICmp(builder, LLVMIntEQ, args[0],
- bld_base->uint_bld.zero, ""),
- lp_build_const_int32(gallivm, -1), msb, "");
+ ac_emit_umsb(&ctx->ac, emit_data->args[0], emit_data->dst_type);
}
/* Find the last bit opposite of the sign bit. */
--
2.7.4
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