[Bug target/39431] New: [4.3/4.4 regression ICE in spill_failure, at reload1.c:2093

[doko at ubuntu dot com]

seen when building the OpenJDK Zero port on ix86:

works when using -march=i486 instead of -march=i585.

$ g++-4.2 -c -march=i586 -g -O3 -fPIC -c jvm.ii
$ g++-4.3 -c -march=i586 -g -O3 -fPIC -c jvm.ii 
/scratch/packages/openjdk/u/openjdk-6-6b14-1.4.1/build-zero/openjdk/hotspot/src/share/vm/prims/jvm.cpp:
In function 'jboolean JVM_CX8Field(JNIEnv*, _jobject*, _jfieldID*, jlong,
jlong)':
/scratch/packages/openjdk/u/openjdk-6-6b14-1.4.1/build-zero/openjdk/hotspot/src/share/vm/prims/jvm.cpp:4206:
error: unable to find a register to spill in class 'GENERAL_REGS'
/scratch/packages/openjdk/u/openjdk-6-6b14-1.4.1/build-zero/openjdk/hotspot/src/share/vm/prims/jvm.cpp:4206:
error: this is the insn:
(insn:HI 71 68 72 11
/scratch/packages/openjdk/u/openjdk-6-6b14-1.4.1/build-zero/openjdk/hotspot/src/os_cpu/linux_zero/vm/atomic_linux_zero.inline.hpp:295
(parallel [
            (set (reg:DI 65 [ D.129908 ])
                (mem/v:DI (plus:SI (reg/f:SI 58 [ prephitmp.14780 ])
                        (reg/v/f:SI 71 [ fid ])) [-1 S8 A64]))
            (set (mem/v:DI (plus:SI (reg/f:SI 58 [ prephitmp.14780 ])
                        (reg/v/f:SI 71 [ fid ])) [-1 S8 A64])
                (unspec_volatile:DI [
                        (mem/v:DI (plus:SI (reg/f:SI 58 [ prephitmp.14780 ])
                                (reg/v/f:SI 71 [ fid ])) [-1 S8 A64])
                        (reg/v:DI 72 [ oldVal ])
                        (reg:SI 101 [ newVal ])
                        (reg:SI 102 [ newVal+4 ])
                    ] 10))
            (clobber (reg:CC 17 flags))
        ]) 1507 {*sync_double_compare_and_swapdi_pic} (expr_list:REG_DEAD
(reg:SI 102 [ newVal+4 ])
        (expr_list:REG_DEAD (reg:SI 101 [ newVal ])
            (expr_list:REG_DEAD (reg/v/f:SI 71 [ fid ])
                (expr_list:REG_DEAD (reg/f:SI 58 [ prephitmp.14780 ])
                    (expr_list:REG_UNUSED (reg:CC 17 flags)
                        (nil)))))))


-- 
           Summary: [4.3/4.4 regression ICE in spill_failure, at
                    reload1.c:2093
           Product: gcc
           Version: 4.3.3
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: doko at ubuntu dot com
  GCC host triplet: i486-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39431