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ignoring b.none branched in basic block detection

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This commit is contained in:
Julian Hammer
2020-08-03 19:23:33 +02:00
parent addcdeda85
commit bd61b94669
1 changed files with 5 additions and 0 deletions
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5
osaca/semantics/marker_utils.py
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@@ -277,6 +277,11 @@ def find_basic_loop_bodies(lines):
current_block.append(line)
# Find end of block by searching for references to valid jump labels
if line['instruction'] and line['operands']:
# Ignore `b.none` instructions (relevant von ARM SVE code)
# This branch instruction is often present _within_ inner loop blocks, but usually
# do not terminate
if line['instruction'] == 'b.none':
continue
for operand in [o for o in line['operands'] if 'identifier' in o]:
if operand['identifier']['name'] in valid_jump_labels:
if operand['identifier']['name'] == label: