Am 20.12.18 um 16:56 schrieb Michel Dänzer: > On 2018-12-19 4:51 a.m., srol...@vmware.com wrote: >> From: Roland Scheidegger <srol...@vmware.com> >> >> This is (much) faster than using the util fallback. >> (Note that there's two methods here, one would use a cache, similar to >> the existing code (although the cache was disabled), except the block >> decode is done with jit code, the other directly decodes the required >> pixels. For now don't use the cache (being direct-mapped is suboptimal, >> but it's difficult to come up with something better which doesn't have >> too much overhead.) > > This change made lp_test_format segfault on my Ryzen 7 1700, both using > LLVM 7 and current SVN HEAD. Not much information in the backtrace > unfortunately: >
Ahh I failed to test with newer llvm versions (it works with llvm 5.0 at least). It is (once again...) due to intrinsics disappearing from llvm. I especially hate it that there's seemingly no way to detect if an intrinsic has disappeared, since llvm will just replace it will calls to address 0 if the intrinsic doesn't exist nowadays... Probably it's the llvm.x86.sse2.pavg.b intrinsic, I'll fix it... Roland > Program received signal SIGSEGV, Segmentation fault. > 0x0000000000000000 in ?? () > (gdb) bt > #0 0x0000000000000000 in ?? () > #1 0x00007ffff7fcd16a in ?? () > #2 0x2c2c2c2caeaeaeae in ?? () > #3 0x979797976f6f6f6f in ?? () > #4 0x000020b00000d7f2 in ?? () > #5 0x0000976f00002cae in ?? () > #6 0x0089625d008eb099 in ?? () > #7 0x7b8487218483a821 in ?? () > #8 0x008414210094ffd6 in ?? () > #9 0x007bef9400739629 in ?? () > #10 0x0000000000000069 in ?? () > #11 0x00000000000006d0 in ?? () > #12 0x00007fffffffe490 in ?? () > #13 0x000055555593f040 in ?? () > #14 0x00007fffffffe430 in ?? () > #15 0x00007ffff7fcd053 in ?? () > #16 0x00007ffff7fcd000 in ?? () > #17 0x00005555556fd618 in util_format_test_cases () > #18 0x00005555558c0780 in ?? () > #19 0x00007fffffffe490 in ?? () > #20 0x00005555556fd618 in util_format_test_cases () > #21 0x00005555555667cc in test_format_float (verbose=<optimized out>, > desc=0x7fffffffe4a0, fp=0x0) at > ../src/gallium/drivers/llvmpipe/lp_test_format.c:184 > #22 test_one (verbose=<optimized out>, format_desc=0x7fffffffe4a0, fp=0x0) at > ../src/gallium/drivers/llvmpipe/lp_test_format.c:342 > #23 test_all (verbose=<optimized out>, fp=0x0) at > ../src/gallium/drivers/llvmpipe/lp_test_format.c:395 > #24 0x000055555556621f in main (argc=1, argv=0x7fffffffe628) at > ../src/gallium/drivers/llvmpipe/lp_test_main.c:419 > > _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/mesa-dev
