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Am 17.09.2014 um 00:03 schrieb James Greenhalgh: > If you have any other suggestions, or if "=&r" is actually correct and > I am misreading the documentation please let me know. with this patch I see a lot of ICEs in the testsuite for test cases built with -O3 (and a build defaulting to -fstack-protector-strong by default), all of the form: Executing on host: /home/doko/gcc/4.9/gcc-4.9-4.9.1/build/gcc/xgcc -B/home/doko/gcc/4.9/gcc-4.9-4.9.1/build/gcc/ -fno-diagnostics-show-caret -fdia gnostics-color=never -O3 -fomit-frame-pointer -funroll-all-loops -finline-functions -w -c -o 900116-1.o /home/doko/gcc/4.9/gcc-4.9-4.9.1/src/g cc/testsuite/gcc.c-torture/compile/900116-1.c (timeout = 300) spawn /home/doko/gcc/4.9/gcc-4.9-4.9.1/build/gcc/xgcc -B/home/doko/gcc/4.9/gcc-4.9-4.9.1/build/gcc/ -fno-diagnostics-show-caret -fdiagnostics-color =never -O3 -fomit-frame-pointer -funroll-all-loops -finline-functions -w -c -o 900116-1.o /home/doko/gcc/4.9/gcc-4.9-4.9.1/src/gcc/testsuite/gcc.c- torture/compile/900116-1.c /home/doko/gcc/4.9/gcc-4.9-4.9.1/src/gcc/testsuite/gcc.c-torture/compile/900116-1.c: In function 'zloop': /home/doko/gcc/4.9/gcc-4.9-4.9.1/src/gcc/testsuite/gcc.c-torture/compile/900116-1.c:14:1: error: insn does not satisfy its constraints: (insn 228 225 230 9 (parallel [ (set (reg:DI 1 x1 [279]) (unspec:DI [ (mem/v/f/c:DI (plus:DI (reg/f:DI 31 sp) (const_int 24 [0x18])) [4 D.2626+0 S8 A64]) (mem/v/f/c:DI (reg/f:DI 2 x2 [277]) [4 __stack_chk_guard+0 S8 A64]) ] UNSPEC_SP_TEST)) (clobber (reg:DI 2 x2 [320])) ]) /home/doko/gcc/4.9/gcc-4.9-4.9.1/src/gcc/testsuite/gcc.c-torture/compile/900116-1.c:14 741 {stack_protect_test_di} (expr_list:REG_DEAD (reg/f:DI 13 x13 [277]) (expr_list:REG_UNUSED (reg:DI 2 x2 [320]) (nil)))) /home/doko/gcc/4.9/gcc-4.9-4.9.1/src/gcc/testsuite/gcc.c-torture/compile/900116-1.c:14:1: internal compiler error: in copyprop_hardreg_forward_1, at regcprop.c:775 Please submit a full bug report, with preprocessed source if appropriate. for now only tested with the 4.9 linaro branch, now testing with trunk. Matthias
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