re PR rtl-optimization/54300 (regcprop incorrectly looks through parallel register swap operation)
PR rtl-optimization/54300 gcc/ PR rtl-optimization/54300 * regcprop.c (copyprop_hardreg_forward_1): Ensure any unused outputs in a single-set are killed from the value chains. gcc/testsuite: PR rtl-optimization/54300 * gcc.target/arm/pr54300.C: New test. From-SVN: r205117
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gcc/testsuite/gcc.target/arm/pr54300.C
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