[Bug rtl-optimization/64208] New: [4.9 Regression][iwmmxt] ICE: internal compiler error: Max. number of generated reload insns per insn is achieved (90)

["siarhei.siamashka at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64208

            Bug ID: 64208
           Summary: [4.9 Regression][iwmmxt] ICE: internal compiler error:
                    Max. number of generated reload insns per insn is
                    achieved (90)
           Product: gcc
           Version: 4.9.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: rtl-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: siarhei.siamashka at gmail dot com

GCC 4.9.2

$ arm-none-linux-gnueabi-gcc -c -O1 -march=iwmmxt test.c
test.c: In function 'x2':
test.c:16:1: internal compiler error: Max. number of generated reload insns per
insn is achieved (90)

The test program itself (generated by creduce):

/********************************/
long long x6(void);
void x7(long long, long long);
void x8(long long);

int x0;
long long *x1;

void x2(void) {
  long long *x3 = x1;
  while (x1) {
    long long x4 = x0, x5 = x6();
    x7(x4, x5);
    x8(x5);
    *x3 = 0;
  }
}
/********************************/