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Introduce globalsym_addr.

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This is an instruction used in legalization of GlobalVarData::Sym global
variables.
This commit is contained in:
Dan Gohman
2017-10-30 10:02:29 -07:00
parent cb805f704d
commit 9c54c3fff0
11 changed files with 96 additions and 9 deletions
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8
lib/cretonne/src/legalizer/globalvar.rs
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@@ -21,7 +21,7 @@ pub fn expand_global_addr(inst: ir::Inst, func: &mut ir::Function, _cfg: &mut Co
match func.global_vars[gv] {
ir::GlobalVarData::VmCtx { offset } => vmctx_addr(inst, func, offset.into()),
ir::GlobalVarData::Deref { base, offset } => deref_addr(inst, func, base, offset.into()),
ir::GlobalVarData::Sym { .. } => (),
ir::GlobalVarData::Sym { .. } => globalsym(inst, func, gv),
}
}
@@ -50,3 +50,9 @@ fn deref_addr(inst: ir::Inst, func: &mut ir::Function, base: ir::GlobalVar, offs
let base_ptr = pos.ins().load(ptr_ty, ir::MemFlags::new(), base_addr, 0);
pos.func.dfg.replace(inst).iadd_imm(base_ptr, offset);
}
/// Expand a `global_addr` instruction for a symbolic name global.
fn globalsym(inst: ir::Inst, func: &mut ir::Function, gv: ir::GlobalVar) {
let ptr_ty = func.dfg.value_type(func.dfg.first_result(inst));
func.dfg.replace(inst).globalsym_addr(ptr_ty, gv);
}