https://llvm.org/bugs/show_bug.cgi?id=24081
Bug ID: 24081
Summary: missed opportunities for using merge sections on ELF
Product: new-bugs
Version: unspecified
Hardware: PC
OS: All
Status: NEW
Severity: normal
Priority: P
Component: new bugs
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Classification: Unclassified
ELF doesn't have a fixed set of sections. In particular, the merge size is just
a field of the section (e_shentsize).
We don't model that very well and miss out on some changes to use those
sections. For example, given
__m256 bar(__m256 a) {
__m256 c = {1,2,3,4};
return a + c;
}
We use
.section .rodata,"a",@progbits
we we could use a merge section with an entry size of 32. I think the same
happens for size 2 (half float for example).
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