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New RTL patterns generated for epilogues with RETURN (trunk r188742) are not recognized by the pattern matching code in arm_early_load_addr_dep, which is used for insn latency calculation when tuning for cortex-m4. It causes an ICE when tuning for armv7e-m or cortex-m4: http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53859. The obvious fix is to detect RETURN pattern in arm_early_load_addr_dep. No regression on qemu. Ok for trunk? Thanks, Greta ChangeLog 2012-07-10 Greta Yorsh <Greta.Yorsh@arm.com> gcc/ PR target/53859 * config/arm/arm.c (arm_early_load_addr_dep): Handle new epilogue patterns. gcc/testsuite PR target/53859 * gcc.target/arm/pr53859.c: New test.
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m4-epilogue-sched.patch.txt
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