DJ Delorie wrote:
Opening this up to the gcc public, since I appear to be unable to get
this to work right.
Still no luck defining a working IRA_COVER_CLASSES for m32c. My
latest attempt:
#define IRA_COVER_CLASSES \
{ \
HC_REGS, MEM_REGS, LIM_REG_CLASSES \
}
(effectively GENERAL_REGS (which I also tried), but MEM_REGS regs are
implemented as memory locations, so I had tried without them) results
in this build failure in newlib:
m32c-elf-gcc -B/greed/dj/m32c/newlib/m32c-elf/m32c-elf/m32cm/newlib/ -isystem
/greed/dj/m32c/newlib/m32c-elf/m32c-elf/m32cm/newlib/targ-include -isystem /greed/dj/m32c/newlib/src/newlib/libc/include
-B/greed/dj/m32c/newlib/m32c-elf/m32c-elf/m32cm/libgloss/m32c -L/greed/dj/m32c/newlib/m32c-elf/m32c-elf/m32cm/libgloss/libnosys
-L/greed/dj/m32c/newlib/src/libgloss/m32c -mcpu=m32cm -DPACKAGE_NAME=\"newlib\" -DPACKAGE_TARNAME=\"newlib\"
-DPACKAGE_VERSION=\"1.16.0\" -DPACKAGE_STRING=\"newlib\ 1.16.0\" -DPACKAGE_BUGREPORT=\"\" -I.
-I../../../../../../src/newlib/libc/stdlib -Os -DPREFER_SIZE_OVER_SPEED -DABORT_PROVIDED -DSMALL_MEMORY -DMISSING_SYSCALL_NAMES
-fno-builtin -g -O2 -mcpu=m32cm -DINTERNAL_NEWLIB -DDEFINE_MALLOC -c ../../../../../../src/newlib/libc/stdlib/mallocr.c
-o lib_a-mallocr.o
../../../../../../src/newlib/libc/stdlib/mallocr.c: In function '_malloc_r':
../../../../../../src/newlib/libc/stdlib/mallocr.c:2588: error: unable to find
a register to spill in class 'HL_REGS'
../../../../../../src/newlib/libc/stdlib/mallocr.c:2588: error: this is the
insn:
(insn 661 660 662 101 ../../../../../../src/newlib/libc/stdlib/mallocr.c:2194
(set (reg:HI 0 r0 [262])
(and:HI (subreg:HI (reg:PSI 5 a1 [258]) 0)
(const_int 127 [0x7f]))) 26 {andhi3_24} (expr_list:REG_DEAD
(reg:PSI 5 a1 [258])
(nil)))
../../../../../../src/newlib/libc/stdlib/mallocr.c:2588: internal compiler
error: in spill_failure, at reload1.c:2093
What are the recorded reloads for this insn? I've never worked with the
m32c, but ISTM that the only problem here is we need op0 and op1 to
match which can be accomplished by reloading op1 into r0.
Jeff
