re PR target/47744 ([x32] ICE: in reload_cse_simplify_operands, at postreload.c:403)

	PR target/47744
	* config/i386/i386.c (ix86_decompose_address): Allow only subregs
	of DImode hard registers in PLUS address chains.

From-SVN: r176413

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index faed53d917d1b1193187949181da8e19925bc145..6597ecd67463465172ddc375d928b1da114f3547 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2011-07-18  Uros Bizjak  <ubizjak@gmail.com>
+
+       PR target/47744
+       * config/i386/i386.c (ix86_decompose_address): Allow only subregs
+       of DImode hard registers in PLUS address chains.
+
 2011-07-18  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 
        PR bootstrap/49769
@@ -281,15 +287,14 @@
        (READONLY_DATA_SECTION_ASM_OP): Remove.
        (TARGET_ASM_NAMED_SECTION): Move from here...
        * config/avr/avr.c: ...to here.
-       (avr_asm_init_sections): Set unnamed callback of
-       readonly_data_section.
+       (avr_asm_init_sections): Set unnamed callback of readonly_data_section.
        (avr_asm_named_section): Make static.
 
 2011-07-13  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 
        PR bootstrap/49739
-       * config.gcc (extra_parts): Add crtprec32.o crtprec64.o crtp
-       rec80.o crtfastmath.o for Linux/x86.
+       * config.gcc (extra_parts): Add crtprec32.o crtprec64.o crtprec80.o
+       and crtfastmath.o for Linux/x86.
 
 2011-07-14  Bernd Schmidt  <bernds@codesourcery.com>
 
@@ -319,8 +324,7 @@
        estimate_insn_tick, estimate_shadow_tick): New functions.
        (prune_ready_list): New arg shadows_only_p.  All callers changed.
        If true, remove everything that isn't SHADOW_P.  Look up delay
-       pairs and estimate ticks to avoid scheduling the first insn too
-       early.
+       pairs and estimate ticks to avoid scheduling the first insn too early.
        (verify_shadows): New function.
        (schedule_block): Add machinery to enable backtracking.
        (sched_init): Take sched_no_dce into account when setting
@@ -385,8 +389,7 @@
 2011-07-13  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 
        PR target/49541
-       * config/sol2.h (LIB_SPEC): Simplify.
-       Move LIB_THREAD_LDFLAGS_SPEC ...
+       * config/sol2.h (LIB_SPEC): Simplify.  Move LIB_THREAD_LDFLAGS_SPEC ...
        (LINK_SPEC): ... here.
 
 2011-07-13  Bernd Schmidt  <bernds@codesourcery.com>
@@ -448,8 +451,7 @@
 
 2011-07-13  H.J. Lu  <hongjiu.lu@intel.com>
 
-       * config/i386/i386.c (x86_output_mi_thunk): Support ptr_mode
-       != Pmode.
+       * config/i386/i386.c (x86_output_mi_thunk): Support ptr_mode != Pmode.
 
        * config/i386/i386.md (*addsi_1_zext): Renamed to ...
        (addsi_1_zext): This.

diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index 3187f856609eeda85dd799d6f346e4ac477666b1..c2688997f4b9eddc15ebcc18ee5adc55cd6f2393 100644 (file)
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -11149,8 +11149,13 @@ ix86_decompose_address (rtx addr, struct ix86_address *out)
                return 0;
              break;
 
-           case REG:
            case SUBREG:
+             /* Allow only subregs of DImode hard regs in PLUS chains.  */
+             if (!register_no_elim_operand (SUBREG_REG (op), DImode))
+               return 0;
+             /* FALLTHRU */
+
+           case REG:
              if (!base)
                base = op;
              else if (!index)