[Bug other/36210] New: [4.3/4.4 Regression] as doesn't like the assembler code

[bunk at stusta dot de]

$ arm-linux-gcc -Wp,-MD,arch/arm/mm/.mmu.o.d  -nostdinc -isystem
/usr/local/DIR/gcc-arm-4.3-20080508/lib/gcc/arm-linux/4.3.1/include
-D__KERNEL__ -Iinclude -Iinclude2
-I/home/bunk/linux/kernel-2.6/git/linux-2.6/include -include
include/linux/autoconf.h -mlittle-endian
-I/home/bunk/linux/kernel-2.6/git/linux-2.6/arch/arm/mm -Iarch/arm/mm -Wall
-Wundef -Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common
-Werror-implicit-function-declaration -Os -fno-stack-protector -marm
-fno-omit-frame-pointer -mapcs -mno-sched-prolog -mabi=aapcs-linux
-mno-thumb-interwork -D__LINUX_ARM_ARCH__=5 -march=armv5te -mtune=xscale
-Wa,-mcpu=xscale -msoft-float -Uarm -fno-omit-frame-pointer
-fno-optimize-sibling-calls -Wdeclaration-after-statement -Wno-pointer-sign 
-D"KBUILD_STR(s)=#s" -D"KBUILD_BASENAME=KBUILD_STR(mmu)" 
-D"KBUILD_MODNAME=KBUILD_STR(mmu)" -c -o arch/arm/mm/mmu.o
/home/bunk/linux/kernel-2.6/git/linux-2.6/arch/arm/mm/mmu.c -save-temps
mmu.s: Assembler messages:
mmu.s:382: Error: can't resolve `_end' {*UND* section} - `_stext' {*UND*
section}
$ 

Working:
- 4.3-20080501

Broken:
- 4.3-20080508

Not tested:
- 4.4

Preprocessed source is the same, diff of the assembler code:

--- mmu.s-working       2008-05-11 16:03:42.000000000 +0300
+++ mmu.s-broken        2008-05-11 16:05:10.000000000 +0300
@@ -365,10 +365,9 @@
        sub     fp, ip, #4
        sub     sp, sp, #4
        ldr     r1, .L51
-       ldr     r2, .L51+4
        mov     r4, r0
+       ldr     r2, .L51+4
        mov     r3, #0
-       rsb     r2, r1, r2
        bl      reserve_bootmem_node
        mov     r0, r4
        ldr     r1, .L51+8
@@ -380,7 +379,7 @@
        .align  2
 .L51:
        .word   _stext-536870912
-       .word   _end-536870912
+       .word   _end-_stext
        .word   swapper_pg_dir-536870912
        .size   reserve_node_zero, .-reserve_node_zero
        .section        .rodata.str1.1


-- 
           Summary: [4.3/4.4 Regression] as doesn't like the assembler code
           Product: gcc
           Version: 4.3.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: other
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: bunk at stusta dot de
 GCC build triplet: x86_64-unknown-linux-gnu
  GCC host triplet: x86_64-unknown-linux-gnu
GCC target triplet: arm-unknown-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36210