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authorDave Airlie <[email protected]>2017-02-16 03:43:50 +0000
committerDave Airlie <[email protected]>2017-02-16 22:57:15 +0000
commite933331cd75d91449eda78edf3e830cd09ad9ee2 (patch)
treecf640a9b842130759fcbb4a3bdc53c60dbb3d1e3
parentfb15a1e9dda17b1006274cdeb1c1410c3f8df0bf (diff)
radeonsi: use shared emit imsb code.
Reviewed-by: Edward O'Callaghan <[email protected]> Reviewed-by: Marek Olšák <[email protected]> Signed-off-by: Dave Airlie <[email protected]>
-rw-r--r--src/gallium/drivers/radeonsi/si_shader_tgsi_alu.c28
1 files changed, 3 insertions, 25 deletions
diff --git a/src/gallium/drivers/radeonsi/si_shader_tgsi_alu.c b/src/gallium/drivers/radeonsi/si_shader_tgsi_alu.c
index 085fd5bd0f9..879deb136e3 100644
--- a/src/gallium/drivers/radeonsi/si_shader_tgsi_alu.c
+++ b/src/gallium/drivers/radeonsi/si_shader_tgsi_alu.c
@@ -586,32 +586,10 @@ static void emit_imsb(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 arg = emit_data->args[0];
-
- LLVMValueRef msb =
- lp_build_intrinsic(builder, "llvm.AMDGPU.flbit.i32",
- emit_data->dst_type, &arg, 1,
- 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, "");
-
- /* If arg == 0 || arg == -1 (0xffffffff), return -1. */
- LLVMValueRef all_ones = lp_build_const_int32(gallivm, -1);
-
- LLVMValueRef cond =
- LLVMBuildOr(builder,
- LLVMBuildICmp(builder, LLVMIntEQ, arg,
- bld_base->uint_bld.zero, ""),
- LLVMBuildICmp(builder, LLVMIntEQ, arg,
- all_ones, ""), "");
-
+ struct si_shader_context *ctx = si_shader_context(bld_base);
emit_data->output[emit_data->chan] =
- LLVMBuildSelect(builder, cond, all_ones, msb, "");
+ ac_emit_imsb(&ctx->ac, emit_data->args[0],
+ emit_data->dst_type);
}
static void emit_iabs(const struct lp_build_tgsi_action *action,