From 658476aef537c0c2d031eb1c7a001f00c1d9bf7b Mon Sep 17 00:00:00 2001
From: Mahesh Bodapati <mbodapat@xilinx.com>
Date: Thu, 12 Jan 2017 16:50:17 +0530
Subject: [PATCH 11/54] [Patch, microblaze]: Fix the Microblaze crash with
 msmall-divides flag Compiler is crashing when we use msmall-divides and
 mxl-barrel-shift flag. This is because when use above flags
 microblaze_expand_divide function will be called for division operation. In
 microblaze_expand_divide function we are using sub_reg but MicroBlaze doesn't
 have subreg register due to this compiler was crashing. Changed the logic to
 avoid sub_reg call

Signed-off-by:Nagaraju Mekala <nmekala@xilix.com>
---
 gcc/config/microblaze/microblaze.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/gcc/config/microblaze/microblaze.c b/gcc/config/microblaze/microblaze.c
index 9a4a287..cbe8cb7 100644
--- a/gcc/config/microblaze/microblaze.c
+++ b/gcc/config/microblaze/microblaze.c
@@ -3575,8 +3575,7 @@ microblaze_expand_divide (rtx operands[])
   mem_rtx = gen_rtx_MEM (QImode,
                             gen_rtx_PLUS (Pmode, regt1, div_table_rtx));
 
-  insn = emit_insn (gen_movqi (regqi, mem_rtx)); 
-  insn = emit_insn (gen_movsi (operands[0], gen_rtx_SUBREG (SImode, regqi, 0)));
+  insn = emit_insn (gen_zero_extendqisi2(operands[0],mem_rtx));
   jump = emit_jump_insn_after (gen_jump (div_end_label), insn); 
   JUMP_LABEL (jump) = div_end_label;
   LABEL_NUSES (div_end_label) = 1; 
-- 
2.7.4