http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54029
Bug #: 54029
Summary: SH: Fix ICE in find_dead_or_set_registers
Classification: Unclassified
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: ch...@gcc.gnu.org
Created attachment 27831
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=27831
preprocessed file. Compiles with -O2
This is a SH regression on the 4.7 and trunk while building Webkit
(pre-processed file size is about 2.2Mb
A far branch to a return rtx produces an ICE in
find_dead_or_set_registers at line resource.c:497:
next = JUMP_LABEL (this_jump_insn);
if (ANY_RETURN_P (next)) <- next is null
next = NULL_RTX;
Turns out that JUMP_LABEL was not set after gen_return in
sh.c:gen_far_branch.
Reproduce with a sh4-linux-g++ or sh-superh-elf-g++ 4.7.1 and above
