From 658476aef537c0c2d031eb1c7a001f00c1d9bf7b Mon Sep 17 00:00:00 2001 From: Mahesh Bodapati 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 --- 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