[Mesa-dev] No luck with tstellar/llvm on HD4890

[Andy Furniss]

Maybe I am messing up somewhere, but I was previously OK with llvm 3.1.

32 bit old LFS setup with a 4890 card.

Now I need to use git tstellar/llvm with 
--enable-experimental-targets=AMDGPU.

On head I get a gpu lock with anything gl, this from gears -

radeon 0000:01:00.0: GPU lockup CP stall for more than 10000msec
radeon 0000:01:00.0: GPU lockup (waiting for 0x0000000000000662 last 
fence id 0x000000000000065f)
[drm:r600_ib_test] *ERROR* radeon: fence wait failed (-35).
[drm:radeon_ib_ring_tests] *ERROR* radeon: failed testing IB on GFX ring 
(-35).
radeon 0000:01:00.0: ib ring test failed (-35).
[drm] Disabling audio support
radeon 0000:01:00.0: GPU softreset
radeon 0000:01:00.0:   R_008010_GRBM_STATUS=0xE7732028
radeon 0000:01:00.0:   R_008014_GRBM_STATUS2=0x00FF0F02
radeon 0000:01:00.0:   R_000E50_SRBM_STATUS=0x200000C0
radeon 0000:01:00.0:   R_008674_CP_STALLED_STAT1 = 0x00000000
radeon 0000:01:00.0:   R_008678_CP_STALLED_STAT2 = 0x00010802
radeon 0000:01:00.0:   R_00867C_CP_BUSY_STAT     = 0x00028180
radeon 0000:01:00.0:   R_008680_CP_STAT          = 0x80038647
radeon 0000:01:00.0:   R_008020_GRBM_SOFT_RESET=0x00007FEE
radeon 0000:01:00.0: R_008020_GRBM_SOFT_RESET=0x00000001
radeon 0000:01:00.0:   R_008010_GRBM_STATUS=0x00003028
radeon 0000:01:00.0:   R_008014_GRBM_STATUS2=0x00000002
radeon 0000:01:00.0:   R_000E50_SRBM_STATUS=0x200000C0
radeon 0000:01:00.0:   R_008674_CP_STALLED_STAT1 = 0x00000000
radeon 0000:01:00.0:   R_008678_CP_STALLED_STAT2 = 0x00000000
radeon 0000:01:00.0:   R_00867C_CP_BUSY_STAT     = 0x00000000
radeon 0000:01:00.0:   R_008680_CP_STAT          = 0x00000000
radeon 0000:01:00.0: GPU reset succeeded, trying to resume
[drm] probing gen 2 caps for device 1022:9603 = 2/0
[drm] enabling PCIE gen 2 link speeds, disable with radeon.pcie_gen2=0
[drm] PCIE GART of 512M enabled (table at 0x0000000000040000).
radeon 0000:01:00.0: WB enabled
radeon 0000:01:00.0: fence driver on ring 0 use gpu addr 
0x0000000040000c00 and cpu addr 0xff950c00
[drm] ring test on 0 succeeded in 1 usecs


So I tried half a dozen random resets to slightly older llvm commits, 
rebuilding mesa after each, but either got a mesa build error or this.

bash-3.2$ ./gears
Not Implemented
UNREACHABLE executed at 
/mnt/sdb1/Src/ts-llvm/llvm/include/llvm/Target/TargetLowering.h:1365!
Stack dump:
0.      Running pass 'Function Pass Manager' on module 'tgsi'.
1.      Running pass 'AMDGPU DAG->DAG Pattern Instruction Selection' on 
function '@main'

radeon_llvm_emit.cpp: In function 'unsigned int 
radeon_llvm_compile(LLVMOpaqueModule*, unsigned char**, unsigned int*, 
const char*, unsigned int)':
radeon_llvm_emit.cpp:129: error: 'class llvm::TargetMachine' has no 
member named 'getDataLayout'
make[4]: *** [radeon_llvm_emit.o] Error 1

I guess there is a working place somewhere - has anyone else with a 
rv770 type card got this working?

Everything is OK with R600_LLVM=0.