From: Uros Bizjak <uros@gcc.gnu.org>
Date: Mon, 18 Jul 2011 17:51:33 +0000 (+0200)
Subject: re PR target/47744 ([x32] ICE: in reload_cse_simplify_operands, at postreload.c:403)
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=031264128aa4d4fb489b687abcd980332da03e90;p=gcc.git

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 faed53d917d..6597ecd6746 100644
--- 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 3187f856609..c2688997f4b 100644
--- 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)