[Bug target/37270] New: [4.4 Regression] SH: spill failure for R0_REGS
kkojima at gcc dot gnu dot org
gcc-bugzilla@gcc.gnu.org
Thu Aug 28 23:13:00 GMT 2008
The trunk compiler fails to compile libffi.call/cls_8byte.c
with -O2 -fomit-frame-pointer. Here is a reduced test case:
typedef struct s8
{
int a;
float b;
} s8;
s8
s8_fn (struct s8 a1, struct s8 a2)
{
struct s8 result;
result.b = a1.b + a2.b;
bar (a1.a, a1.b, a2.a, a2.b, result.a, result.b);
return result;
}
With -O2 -fomit-frame-pointer, it causes
foo.c:15: error: unable to find a register to spill in class 'R0_REGS'
foo.c:15: error: this is the insn:
(insn:HI 23 44 45 3 foo.c:14 (parallel [
(set (subreg:SF (reg:SI 1 r1 [orig:174 D.1226+4 ] [174]) 0)
(reg:SF 163 [ D.1218 ]))
(use (reg/v:PSI 151 ))
(clobber (scratch:SI))
]) 205 {movsf_ie} (expr_list:REG_DEAD (reg:SF 163 [ D.1218 ])
(nil)))
foo.c:15: internal compiler error: in spill_failure, at reload1.c:2098
--
Summary: [4.4 Regression] SH: spill failure for R0_REGS
Product: gcc
Version: 4.4.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: target
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: kkojima at gcc dot gnu dot org
GCC target triplet: sh4-unknown-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37270
More information about the Gcc-bugs
mailing list