diff options
| author | Marek Olšák <[email protected]> | 2015-07-25 12:17:19 +0200 |
|---|---|---|
| committer | Marek Olšák <[email protected]> | 2015-07-31 16:49:16 +0200 |
| commit | 1bbe40836306549414408bb7f30b9288c020db75 (patch) | |
| tree | 33c512438d53845add2b5dacbf9e727382aea66e /src/gallium | |
| parent | 8559f6ce62a9d5b52fa8189ba2352cd48bdabccf (diff) | |
radeonsi: don't use llvm.AMDIL.fraction for FRC and DFRAC
There are 2 reasons for this:
- LLVM optimization passes can work with floor
- there are patterns to select v_fract from floor anyway
There is no change in the generated code.
Diffstat (limited to 'src/gallium')
| -rw-r--r-- | src/gallium/drivers/radeon/radeon_setup_tgsi_llvm.c | 20 |
1 files changed, 16 insertions, 4 deletions
diff --git a/src/gallium/drivers/radeon/radeon_setup_tgsi_llvm.c b/src/gallium/drivers/radeon/radeon_setup_tgsi_llvm.c index 319380f9048..5c08cf5d339 100644 --- a/src/gallium/drivers/radeon/radeon_setup_tgsi_llvm.c +++ b/src/gallium/drivers/radeon/radeon_setup_tgsi_llvm.c @@ -1170,6 +1170,20 @@ static void emit_dneg( emit_data->args[0], ""); } +static void emit_frac( + const struct lp_build_tgsi_action * action, + struct lp_build_tgsi_context * bld_base, + struct lp_build_emit_data * emit_data) +{ + LLVMBuilderRef builder = bld_base->base.gallivm->builder; + + LLVMValueRef floor = lp_build_intrinsic(builder, "floor", emit_data->dst_type, + &emit_data->args[0], 1, + LLVMReadNoneAttribute); + emit_data->output[emit_data->chan] = LLVMBuildFSub(builder, + emit_data->args[0], floor, ""); +} + static void emit_f2i( const struct lp_build_tgsi_action * action, struct lp_build_tgsi_context * bld_base, @@ -1432,8 +1446,7 @@ void radeon_llvm_context_init(struct radeon_llvm_context * ctx) bld_base->op_actions[TGSI_OPCODE_DABS].intr_name = "fabs"; bld_base->op_actions[TGSI_OPCODE_DFMA].emit = build_tgsi_intrinsic_nomem; bld_base->op_actions[TGSI_OPCODE_DFMA].intr_name = "llvm.fma.f64"; - bld_base->op_actions[TGSI_OPCODE_DFRAC].emit = build_tgsi_intrinsic_nomem; - bld_base->op_actions[TGSI_OPCODE_DFRAC].intr_name = "llvm.AMDIL.fraction."; + bld_base->op_actions[TGSI_OPCODE_DFRAC].emit = emit_frac; bld_base->op_actions[TGSI_OPCODE_DNEG].emit = emit_dneg; bld_base->op_actions[TGSI_OPCODE_DSEQ].emit = emit_dcmp; bld_base->op_actions[TGSI_OPCODE_DSGE].emit = emit_dcmp; @@ -1452,8 +1465,7 @@ void radeon_llvm_context_init(struct radeon_llvm_context * ctx) bld_base->op_actions[TGSI_OPCODE_FLR].intr_name = "floor"; bld_base->op_actions[TGSI_OPCODE_FMA].emit = build_tgsi_intrinsic_nomem; bld_base->op_actions[TGSI_OPCODE_FMA].intr_name = "llvm.fma.f32"; - bld_base->op_actions[TGSI_OPCODE_FRC].emit = build_tgsi_intrinsic_nomem; - bld_base->op_actions[TGSI_OPCODE_FRC].intr_name = "llvm.AMDIL.fraction."; + bld_base->op_actions[TGSI_OPCODE_FRC].emit = emit_frac; bld_base->op_actions[TGSI_OPCODE_F2I].emit = emit_f2i; bld_base->op_actions[TGSI_OPCODE_F2U].emit = emit_f2u; bld_base->op_actions[TGSI_OPCODE_FSEQ].emit = emit_fcmp; |