https://llvm.org/bugs/show_bug.cgi?id=26720
Bug ID: 26720
Summary: [ppc64] int16, int8 are not supported by
vec_vsx_ld/vec_vsx_st
Product: libraries
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: Backend: PowerPC
Assignee: unassignedb...@nondot.org
Reporter: jingyuu...@gmail.com
CC: llvm-bugs@lists.llvm.org
Classification: Unclassified
Building ffmpeg for PowerPC64LE failed because some vec_vsx_ld/vec_vsx_st
intrinsic functions are supported by GCC, but not by LLVM. Basically,
1) parameters without "__vector" type are not supported
2) int16/uint16, int8/uint8 are not supported.
For example, the error message given by LLVM is like this:
libswscale/ppc/swscale_altivec.c:46:13: note: expanded from macro 'GET_LS'
a = vec_vsx_ld(((b) << 1) + 16, s);\
^~~~~~~~~~
toolchain/bin/../lib/clang/xxx-trunk/include/altivec.h:10111:39: note:
candidate function not viable: no known conversion from 'const int16_t *' (aka
'const short *') to '__vector int const *' for 2nd argument
static vector signed int __ATTRS_o_ai vec_vsx_ld(int __a,
This page shows all vec_vsx_ld/vec_vsx_st interfaces that GCC supports:
https://gcc.gnu.org/onlinedocs/gcc-4.5.3/gcc/PowerPC-AltiVec_002fVSX-Built_002din-Functions.html
--
You are receiving this mail because:
You are on the CC list for the bug.
_______________________________________________
llvm-bugs mailing list
llvm-bugs@lists.llvm.org
http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-bugs
