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decodetree: Produce clean output for an empty input file

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This is interesting for bisection, where an output file is plumbed,
but does not yet have patterns.

Backports commit 82bfac1c06cadeb5c7252734dc695d951185916c from qemu
This commit is contained in:
Richard Henderson 2019-03-13 11:19:21 -04:00 committed by Lioncash
parent 190ee1657b
commit e18e116ce5
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GPG key ID: 4E3C3CC1031BA9C7
1 changed files with 7 additions and 7 deletions
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14
qemu/scripts/decodetree.py
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@ -1185,15 +1185,15 @@ def main():
'(DisasContext *ctx, ', insntype, ' insn)\n{\n')
i4 = str_indent(4)
output(i4, 'union {\n')
for n in sorted(arguments.keys()):
f = arguments[n]
output(i4, i4, f.struct_name(), ' f_', f.name, ';\n')
output(i4, '} u;\n\n')
if len(allpatterns) != 0:
output(i4, 'union {\n')
for n in sorted(arguments.keys()):
f = arguments[n]
output(i4, i4, f.struct_name(), ' f_', f.name, ';\n')
output(i4, '} u;\n\n')
t.output_code(4, False, 0, 0)
t.output_code(4, False, 0, 0)
output(i4, 'return false;\n')
output('}\n')
if output_file: