https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78516
Bug ID: 78516 Summary: [7 Regression] ICE in lra_assign for e500v2 Product: gcc Version: 7.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: target Assignee: unassigned at gcc dot gnu.org Reporter: jsm28 at gcc dot gnu.org Target Milestone: --- Target: powerpc-linux-gnuspe Running gcc and g++ tests for powerpc-linux-gnuspe --enable-e500-double shows the following ICE (177 times in the logs, but the output of each such failing test appears more than once in the logs; this appears to be the biggest group of failures in the test results). Compile the following reduced test (which compiles OK with GCC 6 branch) with -O0 or -O1 to see the ICE. extern void exit (int); extern void abort (void); volatile double inf_cst = __builtin_inf (); volatile double neg0 = -0.0, one = 1.0; int main (void) { volatile double r; if (!__builtin_isinf (inf_cst)) abort (); r = __builtin_copysign (one, neg0); exit (0); } ice.i: In function 'main': ice.i:15:1: internal compiler error: in lra_assign, at lra-assigns.c:1612 } ^ 0x9bdfb8 lra_assign() /scratch/jmyers/glibc/many7/src/gcc/gcc/lra-assigns.c:1612 0x9b8b9d lra(_IO_FILE*) /scratch/jmyers/glibc/many7/src/gcc/gcc/lra.c:2422 0x96deb1 do_reload /scratch/jmyers/glibc/many7/src/gcc/gcc/ira.c:5381 0x96deb1 execute /scratch/jmyers/glibc/many7/src/gcc/gcc/ira.c:5565 Please submit a full bug report, with preprocessed source if appropriate. Please include the complete backtrace with any bug report. See <http://gcc.gnu.org/bugs.html> for instructions.