1use crate::spec::{
2 FloatAbi, LinkerFlavor, Lld, PanicStrategy, Target, TargetMetadata, TargetOptions, base,
3};
4
5pub(crate) fn target() -> Target {
6 let mut base = base::windows_msvc::opts();
7 // Prevent error LNK2013: BRANCH24(T) fixup overflow
8 // The LBR optimization tries to eliminate branch islands,
9 // but if the displacement is larger than can fit
10 // in the instruction, this error will occur. The linker
11 // should be smart enough to insert branch islands only
12 // where necessary, but this is not the observed behavior.
13 // Disabling the LBR optimization works around the issue.
14 base.add_pre_link_args(LinkerFlavor::Msvc(Lld::No), &["/OPT:NOLBR"]);
15
16 Target {
17 llvm_target: "thumbv7a-pc-windows-msvc".into(),
18 metadata: TargetMetadata {
19 description: None,
20 tier: Some(3),
21 host_tools: Some(false),
22 std: None, // ?
23 },
24 pointer_width: 32,
25 data_layout: "e-m:w-p:32:32-Fi8-i64:64-v128:64:128-a:0:32-n32-S64".into(),
26 arch: "arm".into(),
27 options: TargetOptions {
28 llvm_floatabi: Some(FloatAbi::Hard),
29 features: "+vfp3,+neon".into(),
30 max_atomic_width: Some(64),
31 // FIXME(jordanrh): use PanicStrategy::Unwind when SEH is
32 // implemented for windows/arm in LLVM
33 panic_strategy: PanicStrategy::Abort,
34 ..base
35 },
36 }
37}
38

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