radeon/llvm: use llvm intrinsic for flog2

Reviewed-by: Tom Stellard <thomas.stellard@amd.com>

diff --git a/src/gallium/drivers/radeon/AMDGPUISelLowering.cpp b/src/gallium/drivers/radeon/AMDGPUISelLowering.cpp
index 04dadc3..aee625d 100644 (file)
--- a/src/gallium/drivers/radeon/AMDGPUISelLowering.cpp
+++ b/src/gallium/drivers/radeon/AMDGPUISelLowering.cpp
@@ -35,6 +35,7 @@ AMDGPUTargetLowering::AMDGPUTargetLowering(TargetMachine &TM) :
   setOperationAction(ISD::FCEIL,  MVT::f32, Legal);
   setOperationAction(ISD::FEXP2,  MVT::f32, Legal);
   setOperationAction(ISD::FPOW,   MVT::f32, Legal);
+  setOperationAction(ISD::FLOG2,  MVT::f32, Legal);
   setOperationAction(ISD::FRINT,  MVT::f32, Legal);
 
   setOperationAction(ISD::UDIV, MVT::i32, Expand);

diff --git a/src/gallium/drivers/radeon/AMDILIntrinsics.td b/src/gallium/drivers/radeon/AMDILIntrinsics.td
index 104b32e..4de5767 100644 (file)
--- a/src/gallium/drivers/radeon/AMDILIntrinsics.td
+++ b/src/gallium/drivers/radeon/AMDILIntrinsics.td
@@ -180,8 +180,6 @@ let TargetPrefix = "AMDIL", isTarget = 1 in {
           UnaryIntFloat;
   def int_AMDIL_exn : GCCBuiltin<"__amdil_exn">,
           UnaryIntFloat;
-  def int_AMDIL_log : GCCBuiltin<"__amdil_log">,
-          UnaryIntFloat;
   def int_AMDIL_log_vec : GCCBuiltin<"__amdil_log_vec">,
           UnaryIntFloat;
   def int_AMDIL_ln : GCCBuiltin<"__amdil_ln">,

diff --git a/src/gallium/drivers/radeon/R600Instructions.td b/src/gallium/drivers/radeon/R600Instructions.td
index e32ea69..620fd38 100644 (file)
--- a/src/gallium/drivers/radeon/R600Instructions.td
+++ b/src/gallium/drivers/radeon/R600Instructions.td
@@ -761,7 +761,7 @@ class LOG_CLAMPED_Common <bits<11> inst> : R600_1OP <
 
 class LOG_IEEE_Common <bits<11> inst> : R600_1OP <
   inst, "LOG_IEEE",
-  [(set R600_Reg32:$dst, (int_AMDIL_log R600_Reg32:$src))]
+  [(set R600_Reg32:$dst, (flog2 R600_Reg32:$src))]
 >;
 
 class LSHL_Common <bits<11> inst> : R600_2OP <

diff --git a/src/gallium/drivers/radeon/radeon_setup_tgsi_llvm.c b/src/gallium/drivers/radeon/radeon_setup_tgsi_llvm.c
index 8b5eaed..cc690c0 100644 (file)
--- a/src/gallium/drivers/radeon/radeon_setup_tgsi_llvm.c
+++ b/src/gallium/drivers/radeon/radeon_setup_tgsi_llvm.c
@@ -1151,8 +1151,8 @@ void radeon_llvm_context_init(struct radeon_llvm_context * ctx)
        bld_base->op_actions[TGSI_OPCODE_KIL].intr_name = "llvm.AMDGPU.kill";
        bld_base->op_actions[TGSI_OPCODE_KILP].emit = lp_build_tgsi_intrinsic;
        bld_base->op_actions[TGSI_OPCODE_KILP].intr_name = "llvm.AMDGPU.kilp";
-       bld_base->op_actions[TGSI_OPCODE_LG2].emit = build_tgsi_intrinsic_nomem;
-       bld_base->op_actions[TGSI_OPCODE_LG2].intr_name = "llvm.AMDIL.log.";
+       bld_base->op_actions[TGSI_OPCODE_LG2].emit = build_tgsi_intrinsic_readonly;
+       bld_base->op_actions[TGSI_OPCODE_LG2].intr_name = "llvm.log2.f32";
        bld_base->op_actions[TGSI_OPCODE_LRP].emit = build_tgsi_intrinsic_nomem;
        bld_base->op_actions[TGSI_OPCODE_LRP].intr_name = "llvm.AMDGPU.lrp";
        bld_base->op_actions[TGSI_OPCODE_MIN].emit = build_tgsi_intrinsic_nomem;