https://llvm.org/bugs/show_bug.cgi?id=28231
Bug ID: 28231
Summary: Consider using movw/movt for got entries
Product: libraries
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: Backend: ARM
Assignee: unassignedb...@nondot.org
Reporter: rafael.espind...@gmail.com
CC: llvm-bugs@lists.llvm.org
Classification: Unclassified
Given
@a = external global i32
define i32* @f() {
ret i32* @a
}
llc produces
movw r0, :lower16:(L_a$non_lazy_ptr-(LPC0_0+8))
movt r0, :upper16:(L_a$non_lazy_ptr-(LPC0_0+8))
LPC0_0:
ldr r0, [pc, r0]
when targeting MachO, but
ldr r0, .LCPI0_0
.LPC0_0:
ldr r0, [pc, r0]
When targeting ELF.
I think we are missing GOT relative relocations for movw/movt on ELF.
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