https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94317
Bug ID: 94317
Summary: gcc/config/arm/arm_mve.h:13907: strange assignment ?
Product: gcc
Version: 10.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: dcb314 at hotmail dot com
Target Milestone: ---
>From static analyzer cppcheck:
gcc/config/arm/arm_mve.h:13907:3: warning: Assignment of function parameter has
no effect outside the function. Did you forget dereferencing it?
[uselessAssignmentPtrArg]
Source code is
__extension__ extern __inline int64x2_t
__attribute__ ((__always_inline__, __gnu_inline__, __artificial__))
__arm_vldrdq_gather_base_wb_s64 (uint64x2_t * __addr, const int __offset)
{
int64x2_t
result = __builtin_mve_vldrdq_gather_base_wb_sv2di (*__addr, __offset);
__addr += __offset;
return result;
}
Maybe better code:
__extension__ extern __inline int64x2_t
__attribute__ ((__always_inline__, __gnu_inline__, __artificial__))
__arm_vldrdq_gather_base_wb_s64 (uint64x2_t * __addr, const int __offset)
{
int64x2_t
result = __builtin_mve_vldrdq_gather_base_wb_sv2di (*__addr, __offset);
*__addr += __offset; // here
return result;
}
There seem to be a few duplicates:
> trunk.git/gcc/config/arm/arm_mve.h:13917:3: warning: Assignment of function
> parameter has no effect outside the function. Did you forget dereferencing
> it? [uselessAssignmentPtrArg]
> trunk.git/gcc/config/arm/arm_mve.h:13927:3: warning: Assignment of function
> parameter has no effect outside the function. Did you forget dereferencing
> it? [uselessAssignmentPtrArg]
> trunk.git/gcc/config/arm/arm_mve.h:13937:3: warning: Assignment of function
> parameter has no effect outside the function. Did you forget dereferencing
> it? [uselessAssignmentPtrArg]
> trunk.git/gcc/config/arm/arm_mve.h:13947:3: warning: Assignment of function
> parameter has no effect outside the function. Did you forget dereferencing
> it? [uselessAssignmentPtrArg]
> trunk.git/gcc/config/arm/arm_mve.h:13957:3: warning: Assignment of function
> parameter has no effect outside the function. Did you forget dereferencing
> it? [uselessAssignmentPtrArg]
> trunk.git/gcc/config/arm/arm_mve.h:13967:3: warning: Assignment of function
> parameter has no effect outside the function. Did you forget dereferencing
> it? [uselessAssignmentPtrArg]
> trunk.git/gcc/config/arm/arm_mve.h:13977:3: warning: Assignment of function
> parameter has no effect outside the function. Did you forget dereferencing
> it? [uselessAssignmentPtrArg]
