[Bug target/85525] Alignment Issue in AVX compiler intrinsics
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85525 --- Comment #9 from Tom Ritter --- This may be related to: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53485 https://sourceforge.net/p/mingw-w64/bugs/304/
[Bug target/85525] Alignment Issue in AVX compiler intrinsics
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85525 Jonathan Wakely changed: What|Removed |Added Status|WAITING |UNCONFIRMED Ever confirmed|1 |0 --- Comment #8 from Jonathan Wakely --- Thanks for the details.
[Bug target/85525] Alignment Issue in AVX compiler intrinsics
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85525 --- Comment #7 from Tom Ritter --- I'm compiling some AVX code with MinGW+gcc. I'm afraid it's difficult to create a test case, but I think there's an alignment issue here. Registers at crash site: rbp is 0x00 % 20 > 0:000> r > rax=15ce306b rbx=00656930 rcx=1f1ba500 > rdx= rsi= rdi=00656440 > rip=072656fa rsp=00656bc0 rbp=00657060 > r8=1fc0f0a0 r9=0018 r10=1fc0f0a0 > r11=1f75bcff r12=00657c90 r13=000f > r14= r15= > iopl=0 nv up ei pl nz na po nc > cs=0033 ss=002b ds=002b es=002b fs=0053 gs=002b efl=00010204 > xul!XRE_GetBootstrap+0x256380a: > `072656fa c5fd7f45f0 vmovdqa ymmword ptr [rbp-10h],ymm0 > ss:`00657050=17 Disassembly: vmovdqa expects 0x20 alignment but offset by 0x10: `072356fa c5fd7f45f0 vmovdqa ymmword ptr [rbp-10h],ymm0 I've attached the disassembly. The c++ code is attached and also at: https://searchfox.org/mozilla-central/rev/36dec78aecc40539ecc8d78e91612e38810f963c/gfx/skia/skia/src/opts/SkOpts_hsw.cpp There is a function; convolve_16_pixels that corresponds to xul!XRE_GetBootstrap+0x6676510 in the attached disassembly It was pointed out that `07235595 48c1e805shr rax,5 `07235599 48c1e005shl rax,5 `0723559d 4889c3 mov rbx,rax aligns rbx at the entry to the function, so it can safely do things like vmovdqa ymmword ptr [rbx+3E0h],ymm0 However rbp does not get the same alignment treatment, and operations offset from it may not be correctly aligned.
[Bug target/85525] Alignment Issue in AVX compiler intrinsics
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85525 --- Comment #6 from Tom Ritter --- Created attachment 44020 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44020=edit Disassembly of affected function
[Bug target/85525] Alignment Issue in AVX compiler intrinsics
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85525 --- Comment #5 from Tom Ritter --- ./x86_64-w64-mingw32-g++ -v Using built-in specs. COLLECT_GCC=./x86_64-w64-mingw32-g++ COLLECT_LTO_WRAPPER=/builds/worker/workspace/build/src/mingw32/bin/../libexec/gcc/x86_64-w64-mingw32/6.4.0/lto-wrapper Target: x86_64-w64-mingw32 Configured with: ../gcc-6.4.0/configure --prefix=/tmp/tmp.G8UuS5o8Pw/tools/mingw32 --target=x86_64-w64-mingw32 --with- gnu-ld --with-gnu-as --disable-multilib --enable-threads=posix Thread model: posix gcc version 6.4.0 (GCC) /builds/worker/workspace/build/src/mingw32/bin/x86_64-w64-mingw32-g++ -mwindows -o SkOpts_hsw.o -c -I/builds/worker/workspace/build/src/obj-firefox/dist/stl_wrappers -DDEBUG=1 -DSK_JUMPER_USE_ASSEMBLY=0 -DUNICODE -D_UNICODE -DSKIA_IMPLEMENTATION=1 -DSK_PDF_USE_SFNTLY=1 -DSK_CAN_USE_DLOPEN=0 -DSTATIC_EXPORTABLE_JS_API -DMOZ_HAS_MOZGLUE -DMOZILLA_INTERNAL_API -DIMPL_LIBXUL -I/builds/worker/workspace/build/src/gfx/skia -I/builds/worker/workspace/build/src/obj-firefox/gfx/skia -I/builds/worker/workspace/build/src/gfx/skia/skia/include/c -I/builds/worker/workspace/build/src/gfx/skia/skia/include/config -I/builds/worker/workspace/build/src/gfx/skia/skia/include/core -I/builds/worker/workspace/build/src/gfx/skia/skia/include/effects -I/builds/worker/workspace/build/src/gfx/skia/skia/include/gpu -I/builds/worker/workspace/build/src/gfx/skia/skia/include/pathops -I/builds/worker/workspace/build/src/gfx/skia/skia/include/ports -I/builds/worker/workspace/build/src/gfx/skia/skia/include/private -I/builds/worker/workspace/build/src/gfx/skia/skia/include/utils -I/builds/worker/workspace/build/src/gfx/skia/skia/include/utils/mac -I/builds/worker/workspace/build/src/gfx/skia/skia/include/views -I/builds/worker/workspace/build/src/gfx/skia/skia/src/core -I/builds/worker/workspace/build/src/gfx/skia/skia/src/gpu -I/builds/worker/workspace/build/src/gfx/skia/skia/src/gpu/effects -I/builds/worker/workspace/build/src/gfx/skia/skia/src/gpu/gl -I/builds/worker/workspace/build/src/gfx/skia/skia/src/gpu/glsl -I/builds/worker/workspace/build/src/gfx/skia/skia/src/image -I/builds/worker/workspace/build/src/gfx/skia/skia/src/lazy -I/builds/worker/workspace/build/src/gfx/skia/skia/src/opts -I/builds/worker/workspace/build/src/gfx/skia/skia/src/sfnt -I/builds/worker/workspace/build/src/gfx/skia/skia/src/sksl -I/builds/worker/workspace/build/src/gfx/skia/skia/src/utils -I/builds/worker/workspace/build/src/gfx/skia/skia/src/utils/mac -I/builds/worker/workspace/build/src/gfx/skia/skia/src/utils/win -I/builds/worker/workspace/build/src/gfx/sfntly/cpp/src -I/builds/worker/workspace/build/src/obj-firefox/dist/include -I/builds/worker/workspace/build/src/obj-firefox/dist/include/nspr -I/builds/worker/workspace/build/src/obj-firefox/dist/include/nss -DMOZILLA_CLIENT -include /builds/worker/workspace/build/src/obj-firefox/mozilla-config.h -Wall -Wempty-body -Wignored-qualifiers -Woverloaded-virtual -Wpointer-arith -Wsign-compare -Wtype-limits -Wunreachable-code -Wwrite-strings -Wno-invalid-offsetof -Wduplicated-cond -Wno-error=maybe-uninitialized -Wno-error=deprecated-declarations -Wno-error=array-bounds -Wno-error=free-nonheap-object -Wno-unknown-pragmas -Wno-unused-function -Wno-conversion-null -Wno-switch -Wno-enum-compare -fno-sized-deallocation -fno-exceptions -fno-strict-aliasing -mms-bitfields -fno-keep-inline-dllexport -fno-rtti -ffunction-sections -fdata-sections -Wa,-mbig-obj -fno-exceptions -fno-math-errno -pthread -pipe -g -fno-omit-frame-pointer -Wno-deprecated-declarations -Wno-overloaded-virtual -Wno-shadow -Wno-sign-compare -Wno-unreachable-code -Wno-unused-function -Wno-logical-op -Wno-maybe-uninitialized -MD -MP -MF .deps/SkOpts_hsw.o.pp -mavx2 /builds/worker/workspace/build/src/gfx/skia/skia/src/opts/SkOpts_hsw.cpp (There is no compiler output.)
[Bug target/85525] Alignment Issue in AVX compiler intrinsics
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85525 --- Comment #4 from Tom Ritter --- Created attachment 44018 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44018=edit Preprocessed source file
[Bug target/85525] Alignment Issue in AVX compiler intrinsics
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85525 Jonathan Wakely changed: What|Removed |Added Status|UNCONFIRMED |WAITING Last reconfirmed||2018-04-25 Ever confirmed|0 |1 --- Comment #3 from Jonathan Wakely --- Please read https://gcc.gnu.org/bugs/ and provide the information requested there, and put the details in this report instead of a link to a pastebin.
[Bug target/85525] Alignment Issue in AVX compiler intrinsics
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85525 --- Comment #2 from Tom Ritter --- (In reply to Andrew Pinski from comment #1) > What exact target is this on? Sorry, this is x64 if that's what you mean?
[Bug target/85525] Alignment Issue in AVX compiler intrinsics
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85525 Andrew Pinski changed: What|Removed |Added Component|c |target --- Comment #1 from Andrew Pinski --- What exact target is this on?
