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On ARM, use relocation_model to detect whether r9 should be reserved

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The previous approach of checking for the reserve-r9 target feature
didn't actually work because LLVM only sets this feature very late when
initializing the per-function subtarget.
This commit is contained in:
Amanieu d'Antras 2022-02-17 14:16:52 +00:00
parent 7e80bc3c8d
commit e62c26e39d
1 changed files with 7 additions and 1 deletions
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8
src/inline_asm.rs
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@ -182,7 +182,12 @@ struct InlineAssemblyGenerator<'a, 'tcx> {
impl<'tcx> InlineAssemblyGenerator<'_, 'tcx> {
fn allocate_registers(&mut self) {
let sess = self.tcx.sess;
let map = allocatable_registers(self.arch, &sess.target_features, &sess.target);
let map = allocatable_registers(
self.arch,
sess.relocation_model(),
&sess.target_features,
&sess.target,
);
let mut allocated = FxHashMap::<_, (bool, bool)>::default();
let mut regs = vec![None; self.operands.len()];
@ -315,6 +320,7 @@ impl<'tcx> InlineAssemblyGenerator<'_, 'tcx> {
// Allocate stack slots for saving clobbered registers
let abi_clobber = InlineAsmClobberAbi::parse(
self.arch,
self.tcx.sess.relocation_model(),
&self.tcx.sess.target_features,
&self.tcx.sess.target,
sym::C,