1 use crate::spec::{LinkerFlavor, LldFlavor, PanicStrategy, Target, TargetOptions};
2
target() -> Target3 pub fn target() -> Target {
4 let mut base = super::windows_msvc_base::opts();
5 // Prevent error LNK2013: BRANCH24(T) fixup overflow
6 // The LBR optimization tries to eliminate branch islands,
7 // but if the displacement is larger than can fit
8 // in the instruction, this error will occur. The linker
9 // should be smart enough to insert branch islands only
10 // where necessary, but this is not the observed behavior.
11 // Disabling the LBR optimization works around the issue.
12 let pre_link_args_msvc = "/OPT:NOLBR".to_string();
13 base.pre_link_args.entry(LinkerFlavor::Msvc).or_default().push(pre_link_args_msvc.clone());
14 base.pre_link_args
15 .entry(LinkerFlavor::Lld(LldFlavor::Link))
16 .or_default()
17 .push(pre_link_args_msvc);
18
19 Target {
20 llvm_target: "thumbv7a-pc-windows-msvc".to_string(),
21 pointer_width: 32,
22 data_layout: "e-m:w-p:32:32-Fi8-i64:64-v128:64:128-a:0:32-n32-S64".to_string(),
23 arch: "arm".to_string(),
24 options: TargetOptions {
25 features: "+vfp3,+neon".to_string(),
26 max_atomic_width: Some(64),
27 // FIXME(jordanrh): use PanicStrategy::Unwind when SEH is
28 // implemented for windows/arm in LLVM
29 panic_strategy: PanicStrategy::Abort,
30 ..base
31 },
32 }
33 }
34