8a25be517f
In the PR, fwprop was changing a call instruction and tripped an assert when trying to update a list of call clobbers. There are two ways we could handle this: remove the call clobber and then add it back, or assume that the clobber will stay in its current place. At the moment we don't have enough information to safely move calls around, so the second approach seems simpler and more efficient. gcc/ PR rtl-optimization/98403 * rtl-ssa/changes.cc (function_info::finalize_new_accesses): Explain why we don't remove call clobbers. (function_info::apply_changes_to_insn): Don't attempt to add call clobbers here. gcc/testsuite/ PR rtl-optimization/98403 * g++.dg/opt/pr98403.C: New test. |
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| c++tools | ||
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