R600 Gallium3D LLVM Shader Compiler Hooked Up

**Veerappan** · 04-25-2012, 09:32 AM

Originally Posted by Pontostroy

I use trank LLVM-3.2_svn20120421

Lightmark warning message:
warning: failed to translate tgsi opcode F2I to LLVM
warning: failed to translate tgsi opcode F2I to LLVM
et:qw
pure virtual method called
terminate called recursively
terminate called recursively
pure virtual method called
terminate called recursively
pure virtual method called
Segmentation fault

F2I is the TGSI opcode for converting floats to integers, and it seems that the plumbing to convert floats to ints is missing in the TGSI->LLVM code.

I've managed to get an INCORRECT workaround in place by editing:
${mesa_root}/src/gallium/drivers/radeon/radeon_setup_tgsi_llvm.c

Around, line 570, add the following:
bld_base->op_actions[TGSI_OPCODE_F2I].emit = lp_build_tgsi_intrinsic;
bld_base->op_actions[TGSI_OPCODE_F2I].intr_name = "llvm.AMDIL.f32.i32.flr.";

As I said, this is an incorrect solution. This uses the floor rounding method combined with the float -> int conversion, whereas GLSL should truncate/round-to-zero. There is an FTOI instruction defined in the AMD IL, but I haven't figured out what is needed to output an instruction instead of an intrinsic, and more importantly, where the rest of the conversions are stored. Unfortunately, I won't be able to continue looking at this until after work today.

Even though the solution is incorrect, it increases my piglit test passes from 5700 to ~7400 (of 8000+ total).

**madbiologist** · 04-25-2012, 09:33 AM

Originally Posted by ChrisXY

So I checked llvm out from http://llvm.org/svn/llvm-project/llv...ELEASE_31/rc1/ and compiled mesa with it.

<snip>

struntrally cannot start a map:

Code:

LLVM ERROR: Cannot select: target intrinsic %llvm.AMDGPU.kill

<snip>

How new was the mesa you compiled? This committ looks like it might fix this issue:

http://cgit.freedesktop.org/mesa/mes...9750e194759d89

**ChrisXY** · 04-25-2012, 11:34 AM

Originally Posted by madbiologist

How new was the mesa you compiled? This committ looks like it might fix this issue:

http://cgit.freedesktop.org/mesa/mes...9750e194759d89

Very new. To be sure I pulled and recompiled it again and it still fails. "R600_LLVM=0 stuntrally" works.

**Pontostroy** · 04-25-2012, 11:38 AM

Originally Posted by Veerappan

F2I is the TGSI opcode for converting floats to integers, and it seems that the plumbing to convert floats to ints is missing in the TGSI->LLVM code.

I've managed to get an INCORRECT workaround in place by editing:
${mesa_root}/src/gallium/drivers/radeon/radeon_setup_tgsi_llvm.c

Around, line 570, add the following:
bld_base->op_actions[TGSI_OPCODE_F2I].emit = lp_build_tgsi_intrinsic;
bld_base->op_actions[TGSI_OPCODE_F2I].intr_name = "llvm.AMDIL.f32.i32.flr.";

As I said, this is an incorrect solution. This uses the floor rounding method combined with the float -> int conversion, whereas GLSL should truncate/round-to-zero. There is an FTOI instruction defined in the AMD IL, but I haven't figured out what is needed to output an instruction instead of an intrinsic, and more importantly, where the rest of the conversions are stored. Unfortunately, I won't be able to continue looking at this until after work today.

Even though the solution is incorrect, it increases my piglit test passes from 5700 to ~7400 (of 8000+ total).

in Unigine heaven and lightmark i got:

Code:

Warning: R600 LLVM backend does not support indirect adressing.  Falling back to TGSI backend.                                                                                                                    
Warning: R600 LLVM backend does not support indirect adressing.  Falling back to TGSI backend.                                                                                                                    
Warning: R600 LLVM backend does not support indirect adressing.  Falling back to TGSI backend.                                                                                                                    
LLVM ERROR: Not supported instr: CALL <ga:@llvm.AMDIL.f32.i32.flr.>, %R1<imp-use>, %R2<imp-use,kill>, %R3<imp-use,kill>, %R4<imp-use,kill>, %R5<imp-use,kill>, %R6<imp-use,kill>, %R7<imp-use,kill>, %R8<imp-use,kill>, %R9<imp-use,kill>, %R10<imp-use,kill>, %R11<imp-use,kill>, %R12<imp-use,kill>, %R13<imp-use,kill>, %R14<imp-use,kill>, %R15<imp-use,kill>, %R16<imp-use,kill>, %R17<imp-use,kill>, %R18<imp-use,kill>, %R19<imp-use,kill>, %R20<imp-use,kill>, %R21<imp-use,kill>, %R22<imp-use,kill>, %R23<imp-use,kill>, %R24<imp-use,kill>, %R25<imp-use,kill>, %R26<imp-use,kill>, %R27<imp-use,kill>, %R28<imp-use,kill>, %R29<imp-use,kill>, %R30<imp-use,kill>, %R31<imp-use,kill>, %R32<imp-use,kill>, %R33<imp-use,kill>, %R34<imp-use,kill>, %R35<imp-use,kill>, %R36<imp-use,kill>, %R37<imp-use,kill>, %R38<imp-use,kill>, %R39<imp-use,kill>, %R40<imp-use,kill>, %R41<imp-use,kill>, %R42<imp-use,kill>, %R43<imp-use,kill>, %R44<imp-use,kill>, %R45<imp-use,kill>, %R46<imp-use,kill>, %R47<imp-use,kill>, %R48<imp-use,kill>, %R49<imp-use,kill>, %R50<imp-use,kill>, %R51<imp-use,kill>, %R52<imp-use,kill>, %R53<imp-use,kill>, %R54<imp-use,kill>, %R55<imp-use,kill>, %R56<imp-use,kill>, %R57<imp-use,kill>, %R58<imp-use,kill>, %R59<imp-use,kill>, %R60<imp-use,kill>, %R61<imp-use,kill>, %R62<imp-use,kill>, %R63<imp-use,kill>, %R64<imp-use,kill>, %R65<imp-use,kill>, %R66<imp-use,kill>, %R67<imp-use,kill>, %R68<imp-use,kill>, %R69<imp-use,kill>, %R70<imp-use,kill>, %R71<imp-use,kill>, %R72<imp-use,kill>, %R73<imp-use,kill>, %R74<imp-use,kill>, %R75<imp-use,kill>, %R76<imp-use,kill>, %R77<imp-use,kill>, %R78<imp-use,kill>, %R79<imp-use,kill>, %R80<imp-use,kill>, %R81<imp-use,kill>, %R82<imp-use,kill>, %R83<imp-use,kill>, %R84<imp-use,kill>, %R85<imp-use,kill>, %R86<imp-use,kill>, %R87<imp-use,kill>, %R88<imp-use,kill>, %R89<imp-use,kill>, %R90<imp-use,kill>, %R91<imp-use,kill>, %R92<imp-use,kill>, %R93<imp-use,kill>, %R94<imp-use,kill>, %R95<imp-use,kill>, %R96<imp-use,kill>, %R97<imp-use,kill>, %R98<imp-use,kill>, %R99<imp-use,kill>, %R100<imp-use,kill>, %R101<imp-use,kill>, %R102<imp-use,kill>, %R103<imp-use,kill>, %R104<imp-use,kill>, %R105<imp-use,kill>, %R106<imp-use,kill>, %R107<imp-use,kill>, %R108<imp-use,kill>, %R109<imp-use,kill>, %R1<imp-use>, %R2<imp-use>, %R3<imp-use>, %R4<imp-use>, %R5<imp-use>, %R6<imp-use>, %R7<imp-use>, %R8<imp-use>, %R9<imp-use>, %R10<imp-use>, %R11<imp-use>, %R12<imp-use>, %R13<imp-use>, %R14<imp-use>, %R15<imp-use>, %R16<imp-use>, %R17<imp-use>, %R18<imp-use>, %R19<imp-use>, %R20<imp-use>, %R21<imp-use>, %R22<imp-use>, %R23<imp-use>, %R24<imp-use>, %R25<imp-use>, %R26<imp-use>, %R27<imp-use>, %R28<imp-use>, %R29<imp-use>, %R30<imp-use>, %R31<imp-use>, %R32<imp-use>, %R33<imp-use>, %R34<imp-use>, %R35<imp-use>, %R36<imp-use>, %R37<imp-use>, %R38<imp-use>, %R39<imp-use>, %R40<imp-use>, %R41<imp-use>, %R42<imp-use>, %R43<imp-use>, %R44<imp-use>, %R45<imp-use>, %R46<imp-use>, %R47<imp-use>, %R48<imp-use>, %R49<imp-use>, %R50<imp-use>, %R51<imp-use>, %R52<imp-use>, %R53<imp-use>, %R54<imp-use>, %R55<imp-use>, %R56<imp-use>, %R57<imp-use>, %R58<imp-use>, %R59<imp-use>, %R60<imp-use>, %R61<imp-use>, %R62<imp-use>, %R63<imp-use>, %R64<imp-use>, %R65<imp-use>, %R66<imp-use>, %R67<imp-use>, %R68<imp-use>, %R69<imp-use>, %R70<imp-use>, %R71<imp-use>, %R72<imp-use>, %R73<imp-use>, %R74<imp-use>, %R75<imp-use>, %R76<imp-use>, %R77<imp-use>, %R78<imp-use>, %R79<imp-use>, %R80<imp-use>, %R81<imp-use>, %R82<imp-use>, %R83<imp-use>, %R84<imp-use>, %R85<imp-use>, %R86<imp-use>, %R87<imp-use>, %R88<imp-use>, %R89<imp-use>, %R90<imp-use>, %R91<imp-use>, %R92<imp-use>, %R93<imp-use>, %R94<imp-use>, %R95<imp-use>, %R96<imp-use>, %R97<imp-use>, %R98<imp-use>, %R99<imp-use>, %R100<imp-use>, %R101<imp-use>, %R102<imp-use>, %R103<imp-use>, %R104<imp-use>, %R105<imp-use>, %R106<imp-use>, %R107<imp-use>, %R108<imp-use>, %R109<imp-use>, ...

**Veerappan** · 04-25-2012, 04:22 PM

Originally Posted by Pontostroy

in Unigine heaven and lightmark i got:

Code:

Warning: R600 LLVM backend does not support indirect adressing.  Falling back to TGSI backend.                                                                                                                    
Warning: R600 LLVM backend does not support indirect adressing.  Falling back to TGSI backend.                                                                                                                    
Warning: R600 LLVM backend does not support indirect adressing.  Falling back to TGSI backend.                                                                                                                    
LLVM ERROR: Not supported instr: CALL <ga:@llvm.AMDIL.f32.i32.flr.>, %R1<imp-use>, %R2<imp-use,kill>, %R3<imp-use,kill>, %R4<imp-use,kill>, %R5<imp-use,kill>, %R6<imp-use,kill>, %R7<imp-use,kill>, %R8<imp-use,kill>, %R9<imp-use,kill>, %R10<imp-use,kill>, %R11<imp-use,kill>, %R12<imp-use,kill>, %R13<imp-use,kill>, %R14<imp-use,kill>, %R15<imp-use,kill>, %R16<imp-use,kill>, %R17<imp-use,kill>, %R18<imp-use,kill>, %R19<imp-use,kill>, %R20<imp-use,kill>, %R21<imp-use,kill>, %R22<imp-use,kill>, %R23<imp-use,kill>, %R24<imp-use,kill>, %R25<imp-use,kill>, %R26<imp-use,kill>, %R27<imp-use,kill>, %R28<imp-use,kill>, %R29<imp-use,kill>, %R30<imp-use,kill>, %R31<imp-use,kill>, %R32<imp-use,kill>, %R33<imp-use,kill>, %R34<imp-use,kill>, %R35<imp-use,kill>, %R36<imp-use,kill>, %R37<imp-use,kill>, %R38<imp-use,kill>, %R39<imp-use,kill>, %R40<imp-use,kill>, %R41<imp-use,kill>, %R42<imp-use,kill>, %R43<imp-use,kill>, %R44<imp-use,kill>, %R45<imp-use,kill>, %R46<imp-use,kill>, %R47<imp-use,kill>, %R48<imp-use,kill>, %R49<imp-use,kill>, %R50<imp-use,kill>, %R51<imp-use,kill>, %R52<imp-use,kill>, %R53<imp-use,kill>, %R54<imp-use,kill>, %R55<imp-use,kill>, %R56<imp-use,kill>, %R57<imp-use,kill>, %R58<imp-use,kill>, %R59<imp-use,kill>, %R60<imp-use,kill>, %R61<imp-use,kill>, %R62<imp-use,kill>, %R63<imp-use,kill>, %R64<imp-use,kill>, %R65<imp-use,kill>, %R66<imp-use,kill>, %R67<imp-use,kill>, %R68<imp-use,kill>, %R69<imp-use,kill>, %R70<imp-use,kill>, %R71<imp-use,kill>, %R72<imp-use,kill>, %R73<imp-use,kill>, %R74<imp-use,kill>, %R75<imp-use,kill>, %R76<imp-use,kill>, %R77<imp-use,kill>, %R78<imp-use,kill>, %R79<imp-use,kill>, %R80<imp-use,kill>, %R81<imp-use,kill>, %R82<imp-use,kill>, %R83<imp-use,kill>, %R84<imp-use,kill>, %R85<imp-use,kill>, %R86<imp-use,kill>, %R87<imp-use,kill>, %R88<imp-use,kill>, %R89<imp-use,kill>, %R90<imp-use,kill>, %R91<imp-use,kill>, %R92<imp-use,kill>, %R93<imp-use,kill>, %R94<imp-use,kill>, %R95<imp-use,kill>, %R96<imp-use,kill>, %R97<imp-use,kill>, %R98<imp-use,kill>, %R99<imp-use,kill>, %R100<imp-use,kill>, %R101<imp-use,kill>, %R102<imp-use,kill>, %R103<imp-use,kill>, %R104<imp-use,kill>, %R105<imp-use,kill>, %R106<imp-use,kill>, %R107<imp-use,kill>, %R108<imp-use,kill>, %R109<imp-use,kill>, %R1<imp-use>, %R2<imp-use>, %R3<imp-use>, %R4<imp-use>, %R5<imp-use>, %R6<imp-use>, %R7<imp-use>, %R8<imp-use>, %R9<imp-use>, %R10<imp-use>, %R11<imp-use>, %R12<imp-use>, %R13<imp-use>, %R14<imp-use>, %R15<imp-use>, %R16<imp-use>, %R17<imp-use>, %R18<imp-use>, %R19<imp-use>, %R20<imp-use>, %R21<imp-use>, %R22<imp-use>, %R23<imp-use>, %R24<imp-use>, %R25<imp-use>, %R26<imp-use>, %R27<imp-use>, %R28<imp-use>, %R29<imp-use>, %R30<imp-use>, %R31<imp-use>, %R32<imp-use>, %R33<imp-use>, %R34<imp-use>, %R35<imp-use>, %R36<imp-use>, %R37<imp-use>, %R38<imp-use>, %R39<imp-use>, %R40<imp-use>, %R41<imp-use>, %R42<imp-use>, %R43<imp-use>, %R44<imp-use>, %R45<imp-use>, %R46<imp-use>, %R47<imp-use>, %R48<imp-use>, %R49<imp-use>, %R50<imp-use>, %R51<imp-use>, %R52<imp-use>, %R53<imp-use>, %R54<imp-use>, %R55<imp-use>, %R56<imp-use>, %R57<imp-use>, %R58<imp-use>, %R59<imp-use>, %R60<imp-use>, %R61<imp-use>, %R62<imp-use>, %R63<imp-use>, %R64<imp-use>, %R65<imp-use>, %R66<imp-use>, %R67<imp-use>, %R68<imp-use>, %R69<imp-use>, %R70<imp-use>, %R71<imp-use>, %R72<imp-use>, %R73<imp-use>, %R74<imp-use>, %R75<imp-use>, %R76<imp-use>, %R77<imp-use>, %R78<imp-use>, %R79<imp-use>, %R80<imp-use>, %R81<imp-use>, %R82<imp-use>, %R83<imp-use>, %R84<imp-use>, %R85<imp-use>, %R86<imp-use>, %R87<imp-use>, %R88<imp-use>, %R89<imp-use>, %R90<imp-use>, %R91<imp-use>, %R92<imp-use>, %R93<imp-use>, %R94<imp-use>, %R95<imp-use>, %R96<imp-use>, %R97<imp-use>, %R98<imp-use>, %R99<imp-use>, %R100<imp-use>, %R101<imp-use>, %R102<imp-use>, %R103<imp-use>, %R104<imp-use>, %R105<imp-use>, %R106<imp-use>, %R107<imp-use>, %R108<imp-use>, %R109<imp-use>, ...

I'll double-check what I posted when I get home. I was writing that from memory this morning. Hopefully I'll figure out the proper fix tonight and try to get it pushed to Tom/Mesa.

**Veerappan** · 04-25-2012, 05:36 PM

Originally Posted by Pontostroy

in Unigine heaven and lightmark i got:

Code:

Warning: R600 LLVM backend does not support indirect adressing.  Falling back to TGSI backend.                                                                                                                    
Warning: R600 LLVM backend does not support indirect adressing.  Falling back to TGSI backend.                                                                                                                    
Warning: R600 LLVM backend does not support indirect adressing.  Falling back to TGSI backend.                                                                                                                    
LLVM ERROR: Not supported instr: CALL <ga:@llvm.AMDIL.f32.i32.flr.>, %R1<imp-use>, %R2<imp-use,kill>, %R3<imp-use,kill>, %R4<imp-use,kill>, %R5<imp-use,kill>, %R6<imp-use,kill>, %R7<imp-use,kill>, %R8<imp-use,kill>, %R9<imp-use,kill>, %R10<imp-use,kill>, %R11<imp-use,kill>, %R12<imp-use,kill>, %R13<imp-use,kill>, %R14<imp-use,kill>, %R15<imp-use,kill>, %R16<imp-use,kill>, %R17<imp-use,kill>, %R18<imp-use,kill>, %R19<imp-use,kill>, %R20<imp-use,kill>, %R21<imp-use,kill>, %R22<imp-use,kill>, %R23<imp-use,kill>, %R24<imp-use,kill>, %R25<imp-use,kill>, %R26<imp-use,kill>, %R27<imp-use,kill>, %R28<imp-use,kill>, %R29<imp-use,kill>, %R30<imp-use,kill>, %R31<imp-use,kill>, %R32<imp-use,kill>, %R33<imp-use,kill>, %R34<imp-use,kill>, %R35<imp-use,kill>, %R36<imp-use,kill>, %R37<imp-use,kill>, %R38<imp-use,kill>, %R39<imp-use,kill>, %R40<imp-use,kill>, %R41<imp-use,kill>, %R42<imp-use,kill>, %R43<imp-use,kill>, %R44<imp-use,kill>, %R45<imp-use,kill>, %R46<imp-use,kill>, %R47<imp-use,kill>, %R48<imp-use,kill>, %R49<imp-use,kill>, %R50<imp-use,kill>, %R51<imp-use,kill>, %R52<imp-use,kill>, %R53<imp-use,kill>, %R54<imp-use,kill>, %R55<imp-use,kill>, %R56<imp-use,kill>, %R57<imp-use,kill>, %R58<imp-use,kill>, %R59<imp-use,kill>, %R60<imp-use,kill>, %R61<imp-use,kill>, %R62<imp-use,kill>, %R63<imp-use,kill>, %R64<imp-use,kill>, %R65<imp-use,kill>, %R66<imp-use,kill>, %R67<imp-use,kill>, %R68<imp-use,kill>, %R69<imp-use,kill>, %R70<imp-use,kill>, %R71<imp-use,kill>, %R72<imp-use,kill>, %R73<imp-use,kill>, %R74<imp-use,kill>, %R75<imp-use,kill>, %R76<imp-use,kill>, %R77<imp-use,kill>, %R78<imp-use,kill>, %R79<imp-use,kill>, %R80<imp-use,kill>, %R81<imp-use,kill>, %R82<imp-use,kill>, %R83<imp-use,kill>, %R84<imp-use,kill>, %R85<imp-use,kill>, %R86<imp-use,kill>, %R87<imp-use,kill>, %R88<imp-use,kill>, %R89<imp-use,kill>, %R90<imp-use,kill>, %R91<imp-use,kill>, %R92<imp-use,kill>, %R93<imp-use,kill>, %R94<imp-use,kill>, %R95<imp-use,kill>, %R96<imp-use,kill>, %R97<imp-use,kill>, %R98<imp-use,kill>, %R99<imp-use,kill>, %R100<imp-use,kill>, %R101<imp-use,kill>, %R102<imp-use,kill>, %R103<imp-use,kill>, %R104<imp-use,kill>, %R105<imp-use,kill>, %R106<imp-use,kill>, %R107<imp-use,kill>, %R108<imp-use,kill>, %R109<imp-use,kill>, %R1<imp-use>, %R2<imp-use>, %R3<imp-use>, %R4<imp-use>, %R5<imp-use>, %R6<imp-use>, %R7<imp-use>, %R8<imp-use>, %R9<imp-use>, %R10<imp-use>, %R11<imp-use>, %R12<imp-use>, %R13<imp-use>, %R14<imp-use>, %R15<imp-use>, %R16<imp-use>, %R17<imp-use>, %R18<imp-use>, %R19<imp-use>, %R20<imp-use>, %R21<imp-use>, %R22<imp-use>, %R23<imp-use>, %R24<imp-use>, %R25<imp-use>, %R26<imp-use>, %R27<imp-use>, %R28<imp-use>, %R29<imp-use>, %R30<imp-use>, %R31<imp-use>, %R32<imp-use>, %R33<imp-use>, %R34<imp-use>, %R35<imp-use>, %R36<imp-use>, %R37<imp-use>, %R38<imp-use>, %R39<imp-use>, %R40<imp-use>, %R41<imp-use>, %R42<imp-use>, %R43<imp-use>, %R44<imp-use>, %R45<imp-use>, %R46<imp-use>, %R47<imp-use>, %R48<imp-use>, %R49<imp-use>, %R50<imp-use>, %R51<imp-use>, %R52<imp-use>, %R53<imp-use>, %R54<imp-use>, %R55<imp-use>, %R56<imp-use>, %R57<imp-use>, %R58<imp-use>, %R59<imp-use>, %R60<imp-use>, %R61<imp-use>, %R62<imp-use>, %R63<imp-use>, %R64<imp-use>, %R65<imp-use>, %R66<imp-use>, %R67<imp-use>, %R68<imp-use>, %R69<imp-use>, %R70<imp-use>, %R71<imp-use>, %R72<imp-use>, %R73<imp-use>, %R74<imp-use>, %R75<imp-use>, %R76<imp-use>, %R77<imp-use>, %R78<imp-use>, %R79<imp-use>, %R80<imp-use>, %R81<imp-use>, %R82<imp-use>, %R83<imp-use>, %R84<imp-use>, %R85<imp-use>, %R86<imp-use>, %R87<imp-use>, %R88<imp-use>, %R89<imp-use>, %R90<imp-use>, %R91<imp-use>, %R92<imp-use>, %R93<imp-use>, %R94<imp-use>, %R95<imp-use>, %R96<imp-use>, %R97<imp-use>, %R98<imp-use>, %R99<imp-use>, %R100<imp-use>, %R101<imp-use>, %R102<imp-use>, %R103<imp-use>, %R104<imp-use>, %R105<imp-use>, %R106<imp-use>, %R107<imp-use>, %R108<imp-use>, %R109<imp-use>, ...

I forgot to include the .convert part of the intrinsic name:

bld_base->op_actions[TGSI_OPCODE_F2I].emit = lp_build_tgsi_intrinsic;
bld_base->op_actions[TGSI_OPCODE_F2I].intr_name = "llvm.AMDIL.convert.f32.i32.flr.";

Code:

diff --git a/src/gallium/drivers/radeon/radeon_setup_tgsi_llvm.c b/src/gallium/drivers/radeon/radeon_setup_tgsi_llvm.c
index 62de9da..f2b5c86 100644
--- a/src/gallium/drivers/radeon/radeon_setup_tgsi_llvm.c
+++ b/src/gallium/drivers/radeon/radeon_setup_tgsi_llvm.c
@@ -569,6 +569,10 @@
 	bld_base->op_actions[TGSI_OPCODE_ENDLOOP].emit = endloop_emit;
 	bld_base->op_actions[TGSI_OPCODE_EX2].emit = lp_build_tgsi_intrinsic;
 	bld_base->op_actions[TGSI_OPCODE_EX2].intr_name = "llvm.AMDIL.exp.";
+        //Try using Stream Kernel Analyzer to see what a float->int generates in AMDIL
+        //Need to find a way to convert float to int using truncate for a rounding mode (e.g. round to zero);        
+        bld_base->op_actions[TGSI_OPCODE_F2I].emit = lp_build_tgsi_intrinsic;
+        bld_base->op_actions[TGSI_OPCODE_F2I].intr_name = "llvm.AMDIL.convert.f32.i32.flr.";
 	bld_base->op_actions[TGSI_OPCODE_FLR].emit = lp_build_tgsi_intrinsic;
 	bld_base->op_actions[TGSI_OPCODE_FLR].intr_name = "llvm.AMDGPU.floor";
 	bld_base->op_actions[TGSI_OPCODE_FRC].emit = lp_build_tgsi_intrinsic;

**Pontostroy** · 04-26-2012, 05:19 AM

Originally Posted by Veerappan

Code:

diff --git a/src/gallium/drivers/radeon/radeon_setup_tgsi_llvm.c b/src/gallium/drivers/radeon/radeon_setup_tgsi_llvm.c
index 62de9da..f2b5c86 100644
--- a/src/gallium/drivers/radeon/radeon_setup_tgsi_llvm.c
+++ b/src/gallium/drivers/radeon/radeon_setup_tgsi_llvm.c
@@ -569,6 +569,10 @@
 	bld_base->op_actions[TGSI_OPCODE_ENDLOOP].emit = endloop_emit;
 	bld_base->op_actions[TGSI_OPCODE_EX2].emit = lp_build_tgsi_intrinsic;
 	bld_base->op_actions[TGSI_OPCODE_EX2].intr_name = "llvm.AMDIL.exp.";
+        //Try using Stream Kernel Analyzer to see what a float->int generates in AMDIL
+        //Need to find a way to convert float to int using truncate for a rounding mode (e.g. round to zero);        
+        bld_base->op_actions[TGSI_OPCODE_F2I].emit = lp_build_tgsi_intrinsic;
+        bld_base->op_actions[TGSI_OPCODE_F2I].intr_name = "llvm.AMDIL.convert.f32.i32.flr.";
 	bld_base->op_actions[TGSI_OPCODE_FLR].emit = lp_build_tgsi_intrinsic;
 	bld_base->op_actions[TGSI_OPCODE_FLR].intr_name = "llvm.AMDGPU.floor";
 	bld_base->op_actions[TGSI_OPCODE_FRC].emit = lp_build_tgsi_intrinsic;

Does not work.

Code:

LLVM ERROR: Cannot select: target intrinsic %llvm.AMDIL.convert.f32.i32.flr

**Drago** · 04-26-2012, 06:03 AM

Guys, do you put somewhere in compile flags of LLVM/MESA -fno-rtti or -frtti ?

**Veerappan** · 04-26-2012, 08:10 AM

Originally Posted by Pontostroy

Does not work.

Code:

LLVM ERROR: Cannot select: target intrinsic %llvm.AMDIL.convert.f32.i32.flr

That exact code runs on my machine, so it's possible that there's something different in your machine's configuration. Do you have any old versions of LLVM installed that might be getting in the way? And you're using LLVM 3.1?

In your compiled source tree, does the generated file src/gallium/drivers/radeon/AMDILGenIntrinscs.inc contain the following (probably around line 241)?:
AMDIL_convert_f32_i32_flr, // llvm.AMDIL.convert.f32.i32.flr
and
"llvm.AMDIL.convert.f32.i32.rpi" (around line 619 for me)

If that line is there, but not being discovered correctly, then it sounds like something is interfering. Currently, the only llvm on my system is in /usr/local and is a compiled git master checkout with revision: ee54010afe2f5c5674a4c51bab9ac3b80c9a92f0

**Pontostroy** · 04-26-2012, 08:41 AM

Originally Posted by Veerappan

In your compiled source tree, does the generated file src/gallium/drivers/radeon/AMDILGenIntrinscs.inc contain the following (probably around line 241)?:
AMDIL_convert_f32_i32_flr, // llvm.AMDIL.convert.f32.i32.flr
and
"llvm.AMDIL.convert.f32.i32.rpi" (around line 619 for me)

Yes, in the same places.
I use llvm 3.2_svn20120421, includes only the renaming and a few other little commits.

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