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From 72cdba90d70131c092918c5d5c18eb800f0f9dfb Mon Sep 17 00:00:00 2001
From: Mahesh Bodapati <mbodapat@xilinx.com>
Date: Thu, 12 Jan 2017 16:50:17 +0530
Subject: [PATCH 10/54] 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>
Conflicts:
gcc/config/microblaze/microblaze.c
---
gcc/config/microblaze/microblaze.cc | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/gcc/config/microblaze/microblaze.cc b/gcc/config/microblaze/microblaze.cc
index 6df2c712cab..11e34b3fdae 100644
--- a/gcc/config/microblaze/microblaze.cc
+++ b/gcc/config/microblaze/microblaze.cc
@@ -3719,8 +3719,7 @@ 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;
--
2.34.1
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