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Fix #335: Introduce variable size recipes and remove GPR_SAFE reg classes (#552)

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* Rename size to base_size and introduce a compute_size function;

* Add infra to inspect in/outs registers when computing the size of an instruction;

* Remove the GPR_SAFE_DEREF and GPR_ZERO_DEREF_SAFE register classes on x86 (fixes #335);
This commit is contained in:
Benjamin Bouvier
2018-10-16 00:43:38 +02:00
committed by Dan Gohman
parent c2069762ef
commit 9d6821d6d9
17 changed files with 498 additions and 240 deletions
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3
lib/codegen/meta-python/gen_encoding.py
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@@ -832,7 +832,8 @@ def emit_recipe_sizing(isa, fmt):
for r in isa.all_recipes:
fmt.comment('Code size information for recipe {}:'.format(r.name))
with fmt.indented('RecipeSizing {', '},'):
fmt.format('bytes: {},', r.size)
fmt.format('base_size: {},', r.base_size)
fmt.format('compute_size: {},', r.compute_size)
if r.branch_range:
fmt.format(
'branch_range: '