https://sourceware.org/bugzilla/show_bug.cgi?id=18737
Bug ID: 18737
Summary: Wrong memory operand size for x86 GATHER/SCATTER
instructions
Product: binutils
Version: 2.24
Status: NEW
Severity: normal
Priority: P2
Component: gas
Assignee: unassigned at sourceware dot org
Reporter: m at rolle dot name
Target Milestone: ---
gather/scatter instructions require a memory size to match the vector register
size. However, the memory size is actually the element size, according to
Intel doc. as will accept memory operand without a size specifier.
vgatherqps ymm30{k1},DWORD PTR [rcx+zmm31*4+0x400] # Error: operand size
mismatch for `vgatherqps'
vgatherqps ymm30{k1},YMMWORD PTR [rcx+zmm31*4+0x400]
vgatherqps ymm30{k1},[rcx+zmm31*4+0x400]
vscatterqps DWORD PTR [rcx+zmm31*4+0x400]{k1},ymm30 # Error: operand size
mismatch for `vscatterqps'
vscatterqps YMMWORD PTR [rcx+zmm31*4+0x400]{k1},ymm30
vscatterqps [rcx+zmm31*4+0x400]{k1},ymm30
If possible, why don't you accept both the vector size and the element size.
Otherwise, please change the vector size to the element size.
Does not produce incorrect code, but it is serious because it will not assemble
a valid instruction according to the Intel doc.
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